phpjs/experimental/outcontrol/ob_implicit_flush.js

php.js offers community built php functions in javascript

function ob_implicit_flush() {
  // http://kevin.vanzonneveld.net
  // +   original by: Brett Zamir (http://brett-zamir.me)
  // *     example 1: ob_implicit_flush();
  // *     returns 1: undefined
  // BEGIN REDUNDANT
  this.php_js = this.php_js || {};
  // END REDUNDANT
  var phpjs = this.php_js;
  phpjs.ob_implicit_flush = !phpjs.ob_implicit_flush;
}