<?php
namespace Intervention\Image\Commands;
class ChecksumCommand extends AbstractCommand
{
/**
* Calculates checksum of given image
*
* @param \Intervention\Image\Image $image
* @return boolean
*/
public function execute($image)
{
$colors = [];
$size = $image->getSize();
for ($x=0; $x <= ($size->width-1); $x++) {
for ($y=0; $y <= ($size->height-1); $y++) {
$colors[] = $image->pickColor($x, $y, 'array');
}
}
$this->setOutput(md5(serialize($colors)));
return true;
}
}