imagemagick crop in PHP, solve

Job ID: 33417622

Budget: $10 – $30 USD

how do I use Imagick crop in PHP Top, bottom, left, right?
but "$im->cropImage (0,0,0,0)" not user frandly.
A visitor will not understand image dimensions for cropping.
anyone can help me Top, bottom, left, right crop images?
my budget in 10$
Related categories: PHP Image Processing