title: PHP multidimentional Array syntax not clear
body: <p>I'm using RIPS PHP scanner. In one of the php files it has a line as bellow: </p>
  
  <p>$F_XSS = array('echo' => array(array(0), $F_SECURING_XSS), ......)</p>
  
  <p>what is the meaning of  "<strong>array(array(0)</strong>" above? </p>