miholeus/regex_route_trick.php

## regex_route_trick.php
<?php
$regex = '#^(?|/foo(\d+)(*MARK:16)
    |/foo(\w+)(*MARK:41)
    )$#x';

preg_match($regex, '/footest', $matches);
var_dump($matches);

$m = $matches['MARK'];
$regex = substr_replace($regex, 'FAIL', $m, 5+strlen($m));
var_dump($regex);
	<?php
	$regex = '#^(?\|/foo(\d+)(*MARK:16)
	\|/foo(\w+)(*MARK:41)
	)$#x';

	preg_match($regex, '/footest', $matches);
	var_dump($matches);

	$m = $matches['MARK'];
	$regex = substr_replace($regex, 'FAIL', $m, 5+strlen($m));
	var_dump($regex);