$re = '/\b(?![J|S|V])\w*\b|\W*/';
$str = '[\'Senior\' \'Jeune,Vét,Senior\' \'Senior et Vétéran\' \'Vétéran\' \'Jeune\'
\'Jeune et Vétéran\' \'Jeune et Senior\']';
preg_match_all($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