phpjs/experimental/info/get_include_path.js

php.js offers community built php functions in javascript

function get_include_path() {
  // http://kevin.vanzonneveld.net
  // +   original by: Brett Zamir (http://brett-zamir.me)
  // *     example 1: get_include_path();
  // *     returns 1: '/phpjs'

  if (this.php_js && this.php_js.ini && this.php_js.ini.include_path && this.php_js.ini.include_path.local_value) {
    return this.php_js.ini.include_path.local_value;
  }
  return '';
}