Help: preg_replace

[clown[NOR]]

I asked this a while ago, but couldn't get it to work, so I just gave up for a while.. but i'm back what I'm trying to do is to make so that I can enter a php code and it apears like it does here when we use the [ code] [/ code]... I found a code that should do it, but it's not working as I want it to. I've tried modifying the pattern, but since I'm not that good with preg_replace it most of the time results in error messages.

 

the code I'm using is:

<?php

if (isset($_REQUEST['Submit'])) {

	$s = $_REQUEST['text'];
	$s = str_replace("]\n", "]", $s);
	$match = '#\[code\](.*)\[\/code\]#se';
	$replace = "'<div>'.highlight_string(stripslashes('$1'), true).'</div>'";
	echo preg_replace($match, $replace, $s);

}

?>
<form name="code" method="post" action="code.php">
<textarea name="text" cols="100" rows="40"></textarea>
<br><input type="submit" name="Submit" value="Submit">
</form>

 

Then I try to use this code in the textarea:

<?php

if (isset($_REQUEST['Submit'])) {

	$s = $_REQUEST['text'];
	$s = str_replace("]\n", "]", $s);
	$match = '#\[code\](.*)\[\/code\]#se';
	$replace = "'<div>'.highlight_string(stripslashes('$1'), true).'</div>'";
	echo preg_replace($match, $replace, $s);

}

?>

 

But the result ends up like this:

<?php 

    if (isset($_REQUEST['Submit'])) { 
     
        $string = str_replace("]\n\", \"]\", $_REQUEST['text']); 
        $string = str_replace(\"\\\", \"\", $string); 
         
        $text = preg_replace(\"#\[code\](.*?)\[\/code\]#se\", \"'<div>'.highlight_string(stripslashes('$1'), true).'</div>'\", $string); 
         
        echo $text; 
     
    } 

?>

 

any ideas on how to solve this one?

 

Thanks In Advance

- Clown

[Wildbug]

I had a slash issue with the /e modifier awhile ago while doing something similar.  It tends to add slashes where they're not wanted.  Try this:

 

<?php
if (isset($_REQUEST['Submit'])) {
$_REQUEST['text'] = stripslashes($_POST['text']);
$match = array(
	"/\]\n/",
	'#\[code\](.*)\[/code\]#se',
	'/\\\\"/');
$replace = array(
	']',
	'"<div>".highlight_string(\'$1\',true)."</div>"',
	'"');
echo preg_replace($match, $replace, $_REQUEST['text']);
}
?>

[clown[NOR]]

awsome.. that solved the slash problem, thanks.. but there's one issue left.. how can I stop the code from become red from one point and all the way to the end?

 

like in the last code view in my first post

 

EDIT: i also wonder what the se represents in the pattern

[Wildbug]

link=topic=138998.msg589992#msg589992 date=1178214150]

EDIT: i also wonder what the se represents in the pattern

 

That was in your original code.  They're modifiers.  'e' means treat the replacement like code and use the output of that code as the replacement text.  's' means the dot (.) matches newlines.

 

I'm not sure about the red code, though; it's probably a parsing issue related to quotes.  My prefered editor (Crimson Editor) sometimes gets its syntax coloring wrong when it comes to quotes in PHP.  Maybe highlight_string() has similar difficulties.

[clown[NOR]]

oh ok..thanks for the quick answer... do you know anywhere I can read about modifiers? tried lokoing for it on php.net and the manual, but couldn't see anything.. I'm gonna go trough it again...

 

about the red code, thanks for the info... anyone know how to solve the problem?

 

EDIT: Found info about modifiers...

[MadTechie]

$match = array(
	"/\]\n/",
	'#\[code\](.*)\[/code\]#se',
	'/\\\\"/');

 

Matches

]

Grabs everything here

\\"

 

replaces

]

"<div><font color="#0000BB">Grabs everything here</font></div>"

 

 

of course "Grabs everything here" is formatted with <font color="#0000BB"></font> using the highlight_string

 

 

can you post some example text..

[clown[NOR]]

i'm not sure how that answered my question...

 

can the red code problem have something to do with the modifiers?

[MadTechie]

Sorry PC started to reboot so hit post

 

try here

 

$theText = "here is some [ code]sample data[ /code] is this ok";//<--remove spaces
$result = preg_replace('~\\[code\\](.*)\\[\\\/code\\]~sim', "highlight_string('$1')", $theText);
echo $result;

[clown[NOR]]

that returned this

Warning: preg_replace() [function.preg-replace]: Unknown modifier 'c' in G:\www\test\code.php on line 18

[corbin]

$result = preg_replace('/\[code\](.*)\[\/code\]/')~sim', "highlight_string('$1')", $theText);

 

That should do the trick.... Not sure why MadTechie had all those extra slashes....

 

Maybe I missed something >.< lol

[clown[NOR]]

sorry mate.. didn't work...

 

returned the followin:

Warning: preg_replace() [function.preg-replace]: Unknown modifier ')' in G:\www\test\code.php on line 16

 

nevermind: I removed the ) at the end, but the it gave me unknown modifier ~...  must be something else