<?php
class UploadComponent extends Object {

 var $imageData = array();
 var $destinationDir = NULL;
 var $thumbDestinationDir = NULL;
 var $imageSize = array(500,500);
 var $cropImageSize = array(90,90);
 var $tag = 'width';
 var $imageExt = array('jpg','gif','png','bmp','jpeg');


 function initialize($arr)
 {
 $this->imageData = $arr;
 }

 function isImageFile()
 {
 $ext = $this->imageExtension();

 if(in_array(strtolower($ext),$this->imageExt))
 {
 return true;
 }
 else
 {
 return false;
 }
 }

 function isValidImage()
 {
 if($this->imageData['error'] == 0 &amp;&amp; $this->imageData['name'] <> '')
 {
 if($this->isImageFile())
 {
 return true;
 }
 else
 {
 return false;
 }
 }
 else
 {
 return false;
 }
 }

 function imageExtension()
 {
 return trim(substr($this->imageData['name'],strpos($this->imageData['name'],'.')+1,strlen($this->imageData['name'])));
 }

 function upload($thumb=false)
 {
 $this->__upload($this->destinationDir,$this->imageSize[0],$this->imageSize[1]);
 if($thumb)
 {
 $this->__upload($this->thumbDestinationDir,$this->cropImageSize[0],$this->cropImageSize[1]);
 }
 }

 function __upload($filethumb,$Twidth,$Theight)
 {
 list($width,$height,$type,$attr)=getimagesize($this->imageData['tmp_name']);
 switch($type)
 {
 case 1:
 $img = imagecreatefromgif($this->imageData['tmp_name']);
 break;
 case 2:
 $img=imagecreatefromjpeg($this->imageData['tmp_name']);
 break;
 case 3:
 $img=imagecreatefrompng($this->imageData['tmp_name']);
 break;
 }

 if($this->tag == "width") //width contraint
 {
 $Theight=round(($height/$width)*$Twidth);
 }
 elseif($this->tag == "height") //height constraint
 {
 $Twidth=round(($width/$height)*$Theight);
 }
 else
 {
 if($width > $height)
 $Theight=round(($height/$width)*$Twidth);
 else
 $Twidth=round(($width/$height)*$Theight);
 }
 $thumb=imagecreatetruecolor($Twidth,$Theight);

 if(imagecopyresampled($thumb,$img,0,0,0,0,$Twidth,$Theight,$width,$height))
 {
 switch($type)
 {
 case 1:
 imagegif($thumb,$filethumb);
 break;
 case 2:
 imagejpeg($thumb,$filethumb,100);
 break;
 case 3:
 imagepng($thumb,$filethumb);
 break;
 }
 chmod($filethumb,0666);
 return true;
 }
 }
}
?>

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