PHP: Using PHP to syntax highlight all <code>s on a page... ($highlight_string() isn't an option)

Answer 1

First use preg_match to extract the contents of the [code][/code] tags, and highlight_code() that.

Use the results to preg_replace() the code area in the original string with the highlighted code. Pseudocode-ish:

$code = preg_match(/code pattern/, $string);
$code = highlight_code($code);
$string = preg_replace(/code pattern/, $code, $string);

Hope it works.