(PECL imagick 2.0.0)
Imagick::cropThumbnailImage — Creates a crop thumbnail
$width
   , int $height
   [, bool $legacy = FALSE
  ] )Creates a fixed size thumbnail by first scaling the image up or down and cropping a specified area from the center.
widthThe width of the thumbnail
heightThe Height of the thumbnail
   Liefert TRUE bei Erfolg.
  
Wirft ImagickException bei Fehlern.