citywebshop_cms/application/helpers/image_helper.php

<?php

class Image_helper {
    
    
    static function saveImageToFile($path, $src) {
        $fname = time() . "_" . rand(0, 1000) . "_" . $path . ".png";
        
        list($type, $src) = explode(';', $src);
        list(, $src)      = explode(',', $src);
        $src = base64_decode($src);
        
        if ($path!='') {
            $target = 'static/images/'.$path.'/'.$fname;
            file_put_contents($target,$src);
        }
        else {
            $target = 'static/images/'.$path.'/'.$fname;
            file_put_contents($target,$src);
        }
        
        $output = str_replace(".png",".jpg",$target);
        self::PNGtoJPEG($target,$output);
        
        //return 'static/uploads/' . $path . '/' . $fname;
        return $output;
    }
    
    
    static function PNGtoJPEG($originalFile,$outputFile,$quality=70) {
        $image = imagecreatefrompng($originalFile);
        imagejpeg($image, $outputFile, $quality);
        imagedestroy($image);
        unlink($originalFile);
    }
    
    
}