Preg replace error

[OpenSSL]

Any idea why this line of code:
$image['format'] = strtolower(preg_replace('/^.*?//', '', $image['mime']));

Produces this error:
Warning: preg_replace() [function.preg-replace]: Unknown modifier '/'

Thanks for the help.

[Salathe]

It looks like you want the pattern to match anything up to a forward slash. Since that is the pattern delimiter, you need to escape it or use a different delimiter.

E.g. /^.*?\// or ~^.*?/~