<?php

class cropImage{

var $imgSrc,$myImage,$cropHeight,$cropWidth,$x,$y,$thumb;  

function setImage($image)
{

//Your Image
   $this->imgSrc = $image; 
                     
//getting the image dimensions
   list($width, $height) = getimagesize($this->imgSrc); 
                     
//create image from the jpeg
   this->myImage = imagecreatefromjpeg($this->imgSrc) or die("Error: Cannot find image!"); 
            
       if($width > $height) $biggestSide = $width; //find biggest length
       else $biggestSide = $height; 
                     
//The crop size will be half that of the largest side 
   $cropPercent = .5; // This will zoom in to 50% zoom (crop)
   $this->cropWidth   = $biggestSide*$cropPercent; 
   $this->cropHeight  = $biggestSide*$cropPercent; 
                     
                     
//getting the top left coordinate
   $this->x = ($width-$this->cropWidth)/2;
   $this->y = ($height-$this->cropHeight)/2;
             
}  

function createThumb()
{
                    
  $thumbSize = 250; // will create a 250 x 250 thumb
  $this->thumb = imagecreatetruecolor($thumbSize, $thumbSize); 

  imagecopyresampled($this->thumb, $this->myImage, 0, 0,$this->x, $this->y, $thumbSize, $thumbSize, $this->cropWidth, $this->cropHeight); 
}  

function renderImage()
{
                     
   header('Content-type: image/jpeg');
   imagejpeg($this->thumb);
   imagedestroy($this->thumb); 
} 

$image = new cropImage;
$image->setImage($src);
$image->createThumb();
$image->renderImage();  

}  

?>