<?php
	class Simple_Image {
	 
	   var $image;
	   var $image_type;
	 
	   function load($filename) {
	 
		  $image_info = getimagesize($filename);
		  $this->image_type = $image_info[2];
		  if( $this->image_type == IMAGETYPE_JPEG ) {
	 
			 $this->image = imagecreatefromjpeg($filename);
		  } elseif( $this->image_type == IMAGETYPE_GIF ) {
	 
			 $this->image = imagecreatefromgif($filename);
		  } elseif( $this->image_type == IMAGETYPE_PNG ) {
	 
			 $this->image = imagecreatefrompng($filename);
		  }
	   }
	   function save($filename, $image_type=IMAGETYPE_JPEG, $compression=75, $permissions=null) {
	 
		  if( $image_type == IMAGETYPE_JPEG ) {
			 imagejpeg($this->image,$filename,$compression);
		  } elseif( $image_type == IMAGETYPE_GIF ) {
	 
			 imagegif($this->image,$filename);
		  } elseif( $image_type == IMAGETYPE_PNG ) {
	 
			 imagepng($this->image,$filename);
		  }
		  if( $permissions != null) {
	 
			 chmod($filename,$permissions);
		  }
	   }
	   function output($image_type=IMAGETYPE_JPEG) {
	 
		  if( $image_type == IMAGETYPE_JPEG ) {
			 imagejpeg($this->image);
		  } elseif( $image_type == IMAGETYPE_GIF ) {
	 
			 imagegif($this->image);
		  } elseif( $image_type == IMAGETYPE_PNG ) {
	 
			 imagepng($this->image);
		  }
	   }
	   function getWidth() {
	 
		  return imagesx($this->image);
	   }
	   function getHeight() {
	 
		  return imagesy($this->image);
	   }
	   function resizeToHeight($height) {
	 
		  $ratio = $height / $this->getHeight();
		  $width = $this->getWidth() * $ratio;
		  $this->resize($width,$height);
	   }
	 
	   function resizeToWidth($width) {
		  $ratio = $width / $this->getWidth();
		  $height = $this->getheight() * $ratio;
		  $this->resize($width,$height);
	   }
	 
	   function scale($scale) {
		  $width = $this->getWidth() * $scale/100;
		  $height = $this->getheight() * $scale/100;
		  $this->resize($width,$height);
	   }
	 
	   function resize($width,$height) {
		  $new_image = imagecreatetruecolor($width, $height);
		  imagecopyresampled($new_image, $this->image, 0, 0, 0, 0, $width, $height, $this->getWidth(), $this->getHeight());
		  $this->image = $new_image;
	   }      
	 
	}

?>