phpjs/workbench/session/session_utils.js

php.js offers community built php functions in javascript

// This file is only for assisting session testing; it is NOT a php.js function
/**
* Get value of a cookie
*/
function getcookie(name) {
  var cookies = document.cookie.split(';'), i = 0, l = cookies.length,
      current;
  for (; i < l; i++) {
    current = cookies[i].split('=');
    //            current[0] = current[0].replace(/\s+/,"");
    if (current[0] === name) {return current[1];}
  }
  return undefined;
}