(PECL imagick 2.0.0)
Imagick::cropImage — Extracts a region of the image
$width
   , int $height
   , int $x
   , int $y
   )Extracts a region of the image.
widthThe width of the crop
heightThe height of the crop
xThe X coordinate of the cropped region's top left corner
yThe Y coordinate of the cropped region's top left corner
   Returns TRUE on success.
  
Throws ImagickException on error.