$re = '/(?:[^a-zA-Z]|^)(?:X-Men|prof[esor]{0,6}\.{0,1} x|wolverine|new mutant|captain britain|x-force|magneto|cyclops|chris claremont|deadpool|kamala khan|orchis|emma frost|magik|illyana rasputin|illyana rasputina|boom-boom|carol danvers|krakoa|alpha flight|starjammer|house of x|powers of x|fall of x|krakoa|x-feed|xmen|x men|#xmen|betsy braddock|x-tober|x-tober24|nightcrawler|#x-men|#x-tober2024|x-statix|krakoan)(?:[^a-zA-Z]|$)/m';
$str = 'deadpool';
preg_match_all($re, $str, $matches, PREG_SET_ORDER, 0);
// Print the entire match result
var_dump($matches);
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for PHP, please visit: http://php.net/manual/en/ref.pcre.php