preg_replace_callback

[coleh]

Hi all
Am trying to use preg_replace_callback to execute a function on instances within a string and the server crashes/reboots and page fails to load.

$plumb = preg_replace_callback('/\[([0-9]{1,3})\]/', getUrl, trim(mb_convert_encoding($_POST['content'], 'HTML-ENTITIES', "UTF-8")));

Was trying to call any instances within the string where there is a pair of square brackets containing a 1-3 character long integer.
Am utterly useless at these preg regular expressions - anyone spot a glaring flaw in my regular expression, encountered this problem before or got any suggestions?

Cole

[vaaaska]

Hmmm...works just fine for me. Perhaps you don't have the multibyte functions installed on your server?

[coleh]

multibyte functions installed fine - code fails if use following instead:

 $plumb = preg_replace_callback('/\[([0-9]{1,3})\]/', getUrl, $_POST['content']); 

most confusing!

[coleh]

not sure if this helps but the server would seem to only be crashing upon the regular expression in the preg_replace_callback being met - otherwise all is okay.
does anyone know if this could be anything to do with the pcre library?
currently using PCRE Library Version 4.5 01-December-2003 under PHP Version 5.0.4.