перевод кода на php 7

[kinlok]

ребят я тут навечок и php тока недавна начал изучать памагите пажалуста перевести этат код на php 7

if (!defined('MOZG')) {
    die("Hacking attempt!");
}

class thumbnail
{
    var $img;
    var $watermark_image_light;
    var $watermark_image_dark;
    
    function thumbnail($imgfile)
    {
        //detect image format
        
        $info = @getimagesize($imgfile);
        
        if ($info[2] == 2) {
            $this->img['format'] = "JPEG";
            $this->img['src']    = @imagecreatefromjpeg($imgfile);
        } elseif ($info[2] == 3) {
            $this->img['format'] = "PNG";
            $this->img['src']    = @imagecreatefrompng($imgfile);
        } elseif ($info[2] == 1) {
            $this->img['format'] = "GIF";
            $this->img['src']    = @imagecreatefromgif($imgfile);
        } else {
            echo "Not Supported File! Thumbnails can only be made from .jpg, gif and .png images!";
            @unlink($imgfile);
            exit();
        }
        
        if (!$this->img['src']) {
            echo "Not Supported File! Thumbnails can only be made from .jpg, gif and .png images!";
            @unlink($imgfile);
            exit();
            
        }
        
        $this->img['lebar']        = @imagesx($this->img['src']);
        $this->img['tinggi']       = @imagesy($this->img['src']);
        $this->img['lebar_thumb']  = $this->img['lebar'];
        $this->img['tinggi_thumb'] = $this->img['tinggi'];
        //default quality jpeg
        $this->img['quality']      = 90;
        
    }
    
    function size_auto($size = 100, $site = 0, $jqCrop = 0)
    {
        
        $size = explode("x", $size);
        
        if ($jqCrop) {
            
            return $this->jqCrop(intval($size[0]), intval($size[1]), $jqCrop);
            
        } else if (count($size) == 2) {
            $size[0] = intval($size[0]);
            $size[1] = intval($size[1]);
            return $this->crop(intval($size[0]), intval($size[1]));
            
        } else {
            $size[0] = intval($size[0]);
            return $this->scale(intval($size[0]), $site);
            
        }
        
    }
    
    function crop($nw, $nh)
    {
        
        $w = $this->img['lebar'];
        $h = $this->img['tinggi'];
        
        if ($w <= $nw AND $h <= $nh) {
            $this->img['lebar_thumb']  = $w;
            $this->img['tinggi_thumb'] = $h;
            return 0;
        }
        
        $nw = min($nw, $w);
        $nh = min($nh, $h);
        
        $size_ratio = max($nw / $w, $nh / $h);
        
        $src_w = ceil($nw / $size_ratio);
        $src_h = ceil($nh / $size_ratio);
        
        $sx = floor(($w - $src_w) / 2);
        $sy = floor(($h - $src_h) / 2);
        
        $this->img['des'] = imagecreatetruecolor($nw, $nh);
        
        if ($this->img['format'] == "PNG") {
            imagealphablending($this->img['des'], false);
            imagesavealpha($this->img['des'], true);
        }
        
        imagecopyresampled($this->img['des'], $this->img['src'], 0, 0, $sx, 0, $nw, $nh, $src_w, $src_h);
        
        $this->img['src'] = $this->img['des'];
        return 1;
    }
    
    function jqCrop($nw, $nh, $cropData)
    {
        $cropDataExp = explode('|', $cropData);
        $left        = $cropDataExp[0];
        $top         = $cropDataExp[1];
        
        if (!$left OR $left <= 0)
            $left = 0;
        if (!$top OR $top <= 0)
            $top = 0;
        
        if ($nw < 100)
            $nw = 100;
        if ($nh < 100)
            $nh = 100;
        
        $w = $this->img['lebar'];
        $h = $this->img['tinggi'];
        
        if ($w <= $nw AND $h <= $nh) {
            $this->img['lebar_thumb']  = $w;
            $this->img['tinggi_thumb'] = $h;
            return 0;
        }
        
        $nw = min($nw, $w);
        $nh = min($nh, $h);
        
        $size_ratio = max($nw / $w, $nh / $h);
        
        $src_w = ceil($nw / $size_ratio);
        $src_h = ceil($nh / $size_ratio);
        
        $this->img['des'] = imagecreatetruecolor($nw, $nh);
        
        if ($this->img['format'] == "PNG") {
            imagealphablending($this->img['des'], false);
            imagesavealpha($this->img['des'], true);
        }
        
        imagecopyresampled($this->img['des'], $this->img['src'], 0, 0, $left, $top, $nw, $nh, $nw, $nh);
        
        $this->img['src'] = $this->img['des'];
        
        return 1;
    }
    
    function scale($size = 100, $site = 0)
    {
        
        $site = intval($site);
        
        if ($this->img['lebar'] <= $size and $this->img['tinggi'] <= $size) {
            $this->img['lebar_thumb']  = $this->img['lebar'];
            $this->img['tinggi_thumb'] = $this->img['tinggi'];
            return 0;
        }
        
        switch ($site) {
            
            case "1":
                if ($this->img['lebar'] <= $size) {
                    $this->img['lebar_thumb']  = $this->img['lebar'];
                    $this->img['tinggi_thumb'] = $this->img['tinggi'];
                    return 0;
                } else {
                    $this->img['lebar_thumb']  = $size;
                    $this->img['tinggi_thumb'] = ($this->img['lebar_thumb'] / $this->img['lebar']) * $this->img['tinggi'];
                }
                
                break;
            
            case "2":
                if ($this->img['tinggi'] <= $size) {
                    $this->img['lebar_thumb']  = $this->img['lebar'];
                    $this->img['tinggi_thumb'] = $this->img['tinggi'];
                    return 0;
                } else {
                    $this->img['tinggi_thumb'] = $size;
                    $this->img['lebar_thumb']  = ($this->img['tinggi_thumb'] / $this->img['tinggi']) * $this->img['lebar'];
                }
                
                break;
            
            default:
                
                if ($this->img['lebar'] >= $this->img['tinggi']) {
                    $this->img['lebar_thumb']  = $size;
                    $this->img['tinggi_thumb'] = ($this->img['lebar_thumb'] / $this->img['lebar']) * $this->img['tinggi'];
                    
                } else {
                    
                    $this->img['tinggi_thumb'] = $size;
                    $this->img['lebar_thumb']  = ($this->img['tinggi_thumb'] / $this->img['tinggi']) * $this->img['lebar'];
                    
                }
                
                break;
        }
        
        if ($this->img['lebar_thumb'] < 1)
            $this->img['lebar_thumb'] = 1;
        if ($this->img['tinggi_thumb'] < 1)
            $this->img['tinggi_thumb'] = 1;
        
        $this->img['des'] = imagecreatetruecolor($this->img['lebar_thumb'], $this->img['tinggi_thumb']);
        
        if ($this->img['format'] == "PNG") {
            imagealphablending($this->img['des'], false);
            imagesavealpha($this->img['des'], true);
        }
        
        @imagecopyresampled($this->img['des'], $this->img['src'], 0, 0, 0, 0, $this->img['lebar_thumb'], $this->img['tinggi_thumb'], $this->img['lebar'], $this->img['tinggi']);
        
        $this->img['src'] = $this->img['des'];
        return 1;
        
    }
    
    function jpeg_quality($quality = 90)
    {
        //jpeg quality
        $this->img['quality'] = $quality;
    }
    
function insert_watermark($min_image) {
		$image_width = imagesx( $this->img['src'] );
		$image_height = imagesy( $this->img['src'] );
		
		if($image_width > 210 AND $image_height > 60){
		$this->watermark_image_light = ROOT_DIR . '/templates/Default/images/watermark_light.png';
		$this->watermark_image_dark = ROOT_DIR . '/templates/Default/images/watermark_dark.png';
		$margin = 7;
		}else{
		$this->watermark_image_light = ROOT_DIR . '/templates/Default/images/wm_min_l.png';
		$this->watermark_image_dark = ROOT_DIR . '/templates/Default/images/wm_min_d.png';
		$margin = 8;
		}
		
		
		list ( $watermark_width, $watermark_height ) = getimagesize( $this->watermark_image_light );
		
			$watermark_x = $image_width - $margin - $watermark_width;
			$watermark_y = $image_height - $margin - $watermark_height;
		
		
		$watermark_x2 = $watermark_x + $watermark_width;
		$watermark_y2 = $watermark_y + $watermark_height;
		
		if( $watermark_x < 0 OR $watermark_y < 0 OR $watermark_x2 > $image_width OR $watermark_y2 > $image_height OR $image_width < $min_image OR $image_height < $min_image ) {
			return;
		}
		
		$test = imagecreatetruecolor( 1, 1 );
		imagecopyresampled( $test, $this->img['src'], 0, 0, $watermark_x, $watermark_y, 1, 1, $watermark_width, $watermark_height );
		$rgb = imagecolorat( $test, 0, 0 );
		
		$r = ($rgb >> 16) & 0xFF;
		$g = ($rgb >> 8) & 0xFF;
		$b = $rgb & 0xFF;
		
		$max = min( $r, $g, $b );
		$min = max( $r, $g, $b );
		$lightness = ( double ) (($max + $min) / 510.0);
		imagedestroy( $test );
		
		$watermark_image = ($lightness < 0.5) ? $this->watermark_image_light : $this->watermark_image_dark;
		
		$watermark = imagecreatefrompng( $watermark_image );

		imagealphablending( $watermark, TRUE );

		if( $this->img['format'] == "PNG") {
			imagealphablending( $this->img['src'], TRUE );
			$temp_img = imagecreatetruecolor( $image_width, $image_height );
			imagealphablending ( $temp_img , false );
			imagesavealpha ( $temp_img , true );
			imagecopy( $temp_img, $this->img['src'], 0, 0, 0, 0, $image_width, $image_height );
			imagecopy( $temp_img, $watermark, $watermark_x, $watermark_y, 0, 0, $watermark_width, $watermark_height );
			imagecopy( $this->img['src'], $temp_img, 0, 0, 0, 0, $image_width, $image_height );
			imagedestroy( $temp_img );
		
		} elseif($this->img['format'] == "GIF") { 

			$temp_img = imagecreatetruecolor( $image_width, $image_height );

			$transparent_index=imagecolortransparent($this->img['src']);

			if($transparent_index!==-1){
				$transparent_color=imagecolorsforindex($this->img['src'], $transparent_index);
			 
				$transparent_destination_index=imagecolorallocate($temp_img, $transparent_color['red'], $transparent_color['green'], $transparent_color['blue']);
				imagecolortransparent($temp_img, $transparent_destination_index);
			 
				imagefill($temp_img, 0, 0, $transparent_destination_index);
			}

			imagecopy( $temp_img, $this->img['src'], 0, 0, 0, 0, $image_width, $image_height );
			imagecopy( $temp_img, $watermark, $watermark_x, $watermark_y, 0, 0, $watermark_width, $watermark_height );
			imagecopy( $this->img['src'], $temp_img, 0, 0, 0, 0, $image_width, $image_height );
			imagedestroy( $temp_img );

		} else {

			imagecopy( $this->img['src'], $watermark, $watermark_x, $watermark_y, 0, 0, $watermark_width, $watermark_height );

		}
	
		imagedestroy( $watermark );
	
	}
	
	function save($save = "") {
		
		if( $this->img['format'] == "JPG" || $this->img['format'] == "JPEG" ) {
			//JPEG
			 $this->insert_watermark('50');
			imagejpeg( $this->img['src'], $save, $this->img['quality'] );
		} elseif( $this->img['format'] == "PNG" ) {
			//PNG
			$this->insert_watermark('50');
			imagealphablending( $this->img['src'], false);
			imagesavealpha( $this->img['src'], true);
			imagepng( $this->img['src'], $save );
		} elseif( $this->img['format'] == "GIF" ) {
			//GIF
			$this->insert_watermark('50');
			imagegif( $this->img['src'], $save );
		}
		
		imagedestroy( $this->img['src'] );
	}
	
	function show() {
		if( $this->img['format'] == "JPG" || $this->img['format'] == "JPEG" ) {
			//JPEG
			imageJPEG( $this->img['src'], "", $this->img['quality'] );
		} elseif( $this->img['format'] == "PNG" ) {
			//PNG
			imagePNG( $this->img['src'] );
		} elseif( $this->img['format'] == "GIF" ) {
			//GIF
			imageGIF( $this->img['src'] );
		}
		
		imagedestroy( $this->img['src'] );
	}

}
?>