Regular Expressions

[aksival]

Any regular expression wizards out their tonight? This is driving me crazy...trying to take a string full of HTML and format anything within the <code></code> tags using highlight_string().

$string = "<strong>This</strong> is some HTML!!!<code>echo \"Hello, World!\";</code>No more code!!!";

$pattern = "(<code>)*(</code>)";
$replacement = "\\0";

$string = eregi_replace($pattern, highlight_string($replacement, true), $string);

*Thought that would work, but I know regular expressions are NEVER that easy. An hour later...

Thanks in advance.

Best,
aksival

[madwormer2]

<?php
$string = "<strong>This</strong> is some HTML!!!<code><?php echo 'Hello, World!'; ?></code>No more code!!!";
$a = preg_replace ( "/<code>(.*?)<\/code>/e","highlight_string('\\1',true)", $string);
echo $a;
?>

That one was a bit of a toughie! 😃

[aksival]

That works perfect for the example -- Unfortunately, something is causing it no to work with the string I am supplying (which is like 50+ lines of HTML). Hmm...further findings from a Google-cached Russian version of the PHP manual brought me to this (I modified slightly):

function bbcode_php($s) {
	// Formats php code inside of [php ][ /php] using highlight_string()
	$s = str_replace("]\n", "]", $s);
	$match = array('#\[php\](.*?)\[\/php\]#se');
	$replace = array("'<div>'.highlight_string(stripslashes('$1'), true).'</div>'");
	return preg_replace($match, $replace, $s);
}

...which may actually be a better practice than converting all <code> tags to PHP by default. I'll have to think about this...and keep experimenting with regular expressions.

Thanks for the quick response btw!

aksival