If you want the output of the JS code not to be printed in the output and have it in PHP:<?php// Create a new V8Js object$v8 = new V8Js();// Define a JavaScript function$JS = <<<EOT (function() { return 'Hello World!'; })();EOT;// Execute the JavaScript function using V8js$result = $v8->executeString($JS);// Output the resultvar_dump($result);?>Output:string(12) "Hello World!"