<?php
if(!isset($_POST['x']) || !isset($_POST['y'])){
	die();
}
$x = $_POST['x'];
$y = $_POST['y'];

$temp_img = imagecreatefromjpeg('test.jpg');
$new_img = imagecreatetruecolor(100,100);
$old_width  = imagesx($temp_img);
$old_height = imagesy($temp_img);
imagecopyresampled($new_img,$temp_img,0,0,$x,$y,100,100,100,100);
imagejpeg($new_img , 'temp.jpg');
imagedestroy($new_img);

echo date("Y-m-d H:i:s") . '<br /><a href="temp.jpg" target="_blank">see the image.</a>';