while(1) JSON injection

Question

Can help what kind of php script for this ?

I try

$time=time();
$hash=md5(mt_rand(1,200000));

$arr = array('time' => $time, 'hash' => $hash);
while(1);json_encode($arr);

In Ajax answer i have error Fatal error: Maximum execution time of 30 seconds exceeded in C:\xampp\htdocs\foo\1.php on line 6

It is performing an infinite loop and encoding the $arr, why are you doing this? — ka_lin, Jun 27 '14 at 07:03
you should attach as string with JSON string data `echo "while(1);".json_encode($arr);` — Girish, Jun 27 '14 at 07:04
@Girish yep, and the client which is making the request should strip the `while(1);` before parsing the JSON response. — Fabrício Matté, Jun 27 '14 at 07:07
possible duplicate of [Why does Google prepend while(1); to their JSON responses?](http://stackoverflow.com/questions/2669690/why-does-google-prepend-while1-to-their-json-responses) — njzk2, Aug 01 '14 at 18:30

score 3 · Accepted Answer · answered Jun 27 '14 at 07:12

Thank you Girish very much works :

1.php

<?php
$time=time();
$hash=md5(mt_rand(1,200000));

$arr = array('time' => $time, 'hash' => $hash);
echo "while(1);".json_encode($arr);

ajax -side

responseText=req.responseText.substring(9);
            var obj=JSON.parse(responseText);

            statusElem.innerHTML = obj.hash

1 Answers1