Named backreferences with preg_replace

Question

Pretty straightforward; I can\'t seem to find anything definitive regarding PHP\'s preg_replace() supporting named backreferences:

// should mat         


        

Answer 1

They exist:

http://www.php.net/manual/en/regexp.reference.back-references.php

With preg_replace_callback:

function my_replace($matches) {
    return '/user/profile/' . $matches['id'];
}
$newandimproved = preg_replace_callback('#^user/(?P[^/]+)$#Di', 'my_replace', $string);

Or even quicker

$newandimproved = preg_replace('#^user/([^/]+)$#Di', '/user/profile/$1', $string);