php-general Digest 30 Oct 2005 15:36:19 -0000 Issue 3766
Topics (messages 224837 through 224845):
Re: Substr by words
224837 by: Gustavo Narea
224838 by: Gustavo Narea
224839 by: Gustavo Narea
224842 by: Marcus Bointon
224845 by: Gustavo Narea
Re: Type of form element
224840 by: Marcus Bointon
Re: [DONE] Substr by words
224841 by: Marcus Bointon
php not activated
224843 by: John Taylor-Johnston
224844 by: Marcus Bointon
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----------------------------------------------------------------------
--- Begin Message ---
If forgot to say that It counts ($MaxWords) words, It doesn't matter if
they're separated by simple spaces, line feeds (Unix, dos or mac), tabs,
among others.
On the other hand, you won't have any problem if you use non-English
characters.
Best regards,
Gustavo Narea.
Gustavo Narea wrote:
Hello.
What do you think about this:
<?php
$MyOriginalString = "This is my original string.\nWhat do you think
about this script?";
$MaxWords = 6; // How many words are needed?
echo substr( $MyOriginalString, 0, -strlen(ereg_replace
("^([[:space:]]*[^[:space:][:cntrl:]]+){1,$MaxWords}",
"",$MyOriginalString)));
?>
Only 3 lines.
You have to change $MaxWords to 50 if that's what you need.
Best regards,
Gustavo Narea.
Danny wrote:
Hi,
I need to extract 50 words more or less from a description field. How
can i
do that?. Substr, cuts the words. Is there any other way to that, without
using and array? I mean and implemented function in PHP 4.x
I´ve been googling around, but wordwrap, and substr is driving me mad...
Thanks in advance
Best Regards
--
dpc
--- End Message ---
--- Begin Message ---
Gustavo Narea wrote:
If forgot to say that It counts ($MaxWords) words, It doesn't matter if
they're separated by simple spaces, line feeds (Unix, dos or mac), tabs,
And punctuation marks.
Sorry, I'm very forgetful tonight!
Cheers.
--- End Message ---
--- Begin Message ---
My script will fail if the amount of words in $MyOriginalString is less
than $MaxWords. So, this is the new suggestion:
<?php
$MyOriginalString = "This is my original string.\nWhat do you think
about this script?";
$MaxWords = 50; // How many words are needed?
$replacement = ereg_replace
("^([[:space:]]*[^[:space:][:cntrl:]]+){1,$MaxWords}",
"",$MyOriginalString);
echo substr( $MyOriginalString, 0, ($replacement) ?
-strlen($replacement) : strlen($MyOriginalString));
?>
Four lines.
BTW: Did I mention that I was forgetful? ;-)
Best regards,
Gustavo Narea.
Gustavo Narea wrote:
Hello.
What do you think about this:
<?php
$MyOriginalString = "This is my original string.\nWhat do you think
about this script?";
$MaxWords = 6; // How many words are needed?
echo substr( $MyOriginalString, 0, -strlen(ereg_replace
("^([[:space:]]*[^[:space:][:cntrl:]]+){1,$MaxWords}",
"",$MyOriginalString)));
?>
Only 3 lines.
You have to change $MaxWords to 50 if that's what you need.
Best regards,
Gustavo Narea.
Danny wrote:
Hi,
I need to extract 50 words more or less from a description field. How
can i
do that?. Substr, cuts the words. Is there any other way to that, without
using and array? I mean and implemented function in PHP 4.x
I´ve been googling around, but wordwrap, and substr is driving me mad...
Thanks in advance
Best Regards
--
dpc
--- End Message ---
--- Begin Message ---
On 30 Oct 2005, at 06:22, Gustavo Narea wrote:
$replacement = ereg_replace ("^([[:space:]]*[^[:space:][:cntrl:]]+)
{1,$MaxWords}", "",$MyOriginalString);
echo substr( $MyOriginalString, 0, ($replacement) ? -strlen
($replacement) : strlen($MyOriginalString));
You could get the regex to do the search and the extraction in one go:
$MyOriginalString = "This is my original string.\nWhat do you think
about this script?";
$MaxWords = 6; // How many words are needed?
$matches = array();
if (preg_match("/(\b\w+\b\W*){1,$MaxWords}/", $MyOriginalString,
$matches)) {
$result = trim($matches[0]);
echo $result;
}
Marcus
--
Marcus Bointon
Synchromedia Limited: Putting you in the picture
[EMAIL PROTECTED] | http://www.synchromedia.co.uk
--- End Message ---
--- Begin Message ---
Hello.
Marcus Bointon wrote:
On 30 Oct 2005, at 06:22, Gustavo Narea wrote:
You could get the regex to do the search and the extraction in one go:
$MyOriginalString = "This is my original string.\nWhat do you think
about this script?";
$MaxWords = 6; // How many words are needed?
$matches = array();
if (preg_match("/(\b\w+\b\W*){1,$MaxWords}/", $MyOriginalString,
$matches)) {
$result = trim($matches[0]);
echo $result;
}
I have not used preg_* functions yet, so I may be wrong:
I think that trim($matches[0]) will return the whole string with no
change. On the other hand, I think we have to place a caret after the
first slash.
What about this:
<?php
$MyOriginalString = "This is my original string.\nWhat do you think
about this script?";
$MaxWords = 6; // How many words are needed?
$matches = array();
if (preg_match("/^(\b\w+\b\W*){1,$MaxWords}/", $MyOriginalString,
$matches)) {
unset($matches[0]);
$result = implode(" ",$matches);
echo $result;
}
?>
By the way, if you're able to use preg_* functions, I suggest you to use
this script instead of the former I suggested. What's the difference?
Let's suppose we have a string with typos such as "Mandriva , Red Hat ,
Debian" (the right one is "Mandriva, Red Hat, Debian", without spaces
before commas). The former script will find 6 words (because of the
spaces before commas), while the latter will find 4 words (Mandriva Red
Hat Debian). In this case, the former was wrong and the latter right.
However, the former doesn't not remove punctuation marks nor spaces
(tabs, fine feeds, among others); the latter will remove any character
which is a non-word character. If you need words + punctuation marks +
spaces up to the ($MaxWords)th word, this is my suggestion:
<?php
$MyOriginalString = "This is my original string.\nWhat do you think
about this script?";
$MaxWords = 6; // How many words are needed?
$replacement = preg_match("/^(\W*\b\w+\b){1,$MaxWords}/", '',
$MyOriginalString);
$result = substr( $MyOriginalString, 0, ($replacement) ?
-strlen($replacement) : strlen($MyOriginalString));
echo $result;
?>
Best regards,
Gustavo Narea.
--- End Message ---
--- Begin Message ---
On 29 Oct 2005, at 20:59, Richard Lynch wrote:
So you will most likely be using isset($_POST['checkbox_name']) rather
than testing for "on"
I classify using isset for checking for the existence of array keys
to be a bad habit as in some common cases it will not work as you
expect, for example:
<input type="checkbox" name="checkbox_name" />
(note it has no value attribute) If it's checked, you would get the
equivalent URL of "...?checkbox_name=", so $_REQUEST['checkbox_name']
exists, but may contain NULL, and isset would return false even
though it's there. A completely reliable check that will never
generate any warnings is:
array_key_exists('checkbox_name', $_REQUEST).
If you have several checkboxes in an array (using names like
name="checkbox_name[option1]"), you would say:
if (array_key_exists('checkbox_name', $_REQUEST) and is_array
($_REQUEST['checkbox_name'])) {
if (array_key_exists('option1', $_REQUEST['checkbox_name'])) {
echo "you selected option 1\n";
}
if (array_key_exists('option2', $_REQUEST['checkbox_name'])) {
echo "you selected option 2\n";
}
//etc...
}
Marcus
--
Marcus Bointon
Synchromedia Limited: Putting you in the picture
[EMAIL PROTECTED] | http://www.synchromedia.co.uk
--- End Message ---
--- Begin Message ---
On 29 Oct 2005, at 20:41, Richard Lynch wrote:
It was probably replacing *TWO* spaces with one.
If so, it should really be in a while loop, because there could be 3
or more spaces in a row, and if the goal is only single-spaced
words...
I can hardly think of a better application for a regex:
$text = preg_replace('/ */', ' ', $text);
Marcus
--
Marcus Bointon
Synchromedia Limited: Putting you in the picture
[EMAIL PROTECTED] | http://www.synchromedia.co.uk
--- End Message ---
--- Begin Message ---
I have some html + php stored in a mysql record. But when I echo the
contents:
$mydata->HTML="<input type="text" size="40" value="<?php
if($searchenquiry)
echo stripslashes(htmlspecialchars($searchenquiry));
?>" name="searchenquiry" />";
the php is not activated; rather I see <?php ... ?> in my html source.
It worked before, I thought.
P.S. is there a better way to use this function?
John
--------snip---------
display();
echo $contents;
function display()
{
global $contents, $PHP_SELF;
$file = basename($PHP_SELF);
include("connect.inc");
$sql = "SELECT * FROM `".$db."`.`".$table_editor."` WHERE `Filename`
LIKE '".$file."' LIMIT 0,1;";
$myquery = mysql_query($sql);
while ($mydata = mysql_fetch_object($myquery)) {
$contents = $mydata->HTML;
}
}
--- End Message ---
--- Begin Message ---
On 30 Oct 2005, at 14:13, John Taylor-Johnston wrote:
echo $contents;
PHP doesn't now that it's PHP - it just treats it as text. You can
tell it to run it as PHP explicitly using:
eval($contents);
Eval is usually worth avoiding, but it will do what you ask.
Your display function could be improved:
function display()
{
$file = basename($_SERVER['PHP_SELF']);
require 'connect.inc';
$sql = "SELECT HTML FROM `$db`.`$table_editor` WHERE `Filename`
LIKE '".addslashes($file)."' LIMIT 1;";
if ($myquery = mysql_query($sql) and mysql_num_rows($myquery) > 0) {
$mydata = mysql_fetch_array($myquery, MYSQL_NUM);
return $mydata[0];
}
return false;
}
Then call it:
if ($contents = display())
eval($contents);
This should be faster and safer than your original code.
Marcus
--
Marcus Bointon
Synchromedia Limited: Putting you in the picture
[EMAIL PROTECTED] | http://www.synchromedia.co.uk
--- End Message ---
