Question

I’m looping through a list of words being replaced using preg_replace. Here is the code I’m using:

foreach ( $words->Reserved as $reserved )
    $code = preg_replace( ( '/\b(' . $reserved . ')\b/' ), ( '<cs_reserved>' . $reserved . '</cs_reserved>' ), $code );

The expression used above works perfectly, unless $reserved contains a # sign. I tried using brackets (as seen above), and that did not help.

I’m not very good at regex, so the above may not be ideal, but it does exactly what it needs to do for my project.

Any help would be appreciated. 🙂

Answer 1

use preg_quote

$code = preg_replace( ( '/\b(' . preg_quote($reserved) . ')\b/' ), ( '<cs_reserved>' . $reserved . '</cs_reserved>' ), $code );