<?php

class img {
    
    var $image = '';
    var $temp = '';
    
    function img($sourceFile){
        if(file_exists($sourceFile)){
            $this->image = ImageCreateFromJPEG($sourceFile);
        } else {
            $this->errorHandler();
        }
        return;
    }
    
    function resize($width, $height, $aspectradio = true){
        $o_wd = imagesx($this->image);
        $o_ht = imagesy($this->image);
        if(isset($aspectradio)&&$aspectradio) {
            $w = round($o_wd * $height / $o_ht);
            $h = round($o_ht * $width / $o_wd);
            if(($height-$h)<($width-$w)){
                $width =& $w;
            } else {
                $height =& $h;
            }
        }
        $this->temp = imageCreateTrueColor($width,$height);
        imageCopyResampled($this->temp, $this->image,
        0, 0, 0, 0, $width, $height, $o_wd, $o_ht);
        $this->sync();
        return;
    }
    
    function sync(){
        $this->image =& $this->temp;
        unset($this->temp);
        $this->temp = '';
        return;
    }
    
    function show(){
        $this->_sendHeader();
        ImageJPEG($this->image);
        return;
    }
    
    function _sendHeader(){
        header('Content-Type: image/jpeg');
    }
    
    function errorHandler(){
        echo "Hata";
        exit();
    }
    
    function store($file){
        ImageJPEG($this->image,$file);
        return;
    }
    
    function watermark($pngImage, $left = 0, $top = 0){
        ImageAlphaBlending($this->image, true);
        $layer = ImageCreateFromPNG($pngImage);
        $logoW = ImageSX($layer);
        $logoH = ImageSY($layer);
        ImageCopy($this->image, $layer, $left, $top, 0, 0, $logoW, $logoH);
    }
}

$img = new img($yol);
$img->resize(250,250);
$img->show();
$img->store($thum_yol);
?>