PHP - Imagick resize/crop gif

gistfile1.php

$imagick = new \Imagine\Imagick\Imagine(); 
$image = $imagick->open($image_path); 
      

$image = $image->getImagick()->coalesceImages(); 

foreach ($image as $frame) 
{ 
	$frame->cropImage($crop_w,$crop_h,0,0); 
	$frame->thumbnailImage($resize_w,$resize_h); 
	$frame->setImagePage($resize_w,$resize_h, 0, 0); 
} 
$image = $image->deconstructImages(); 
$image->writeImages($image_path, true);