docblock tag to array

doctag_parser.php

<?php

$str ='
/**    
 * @param integer  $int  An integer
 * @return boolean
 * @postParams [display_name, username, about, email, gender, password, confirm_password]
 */
';
if (preg_match_all('/@(\w+)\s+(.*)\r?\n/m', $str, $matches)){
  $result = array_combine($matches[1], $matches[2]);
}

$p = $result['postParams'];
$p = str_replace(str_split('[] '), "", $p);
$a = explode(",", $p);
var_dump($a);