GD crop center differents extentions

resize_crop.php

function resize_crop_image($max_width, $max_height, $source_file, $dst_dir, $quality = 80)
    {
        $imgsize = getimagesize($source_file);
        $width = $imgsize[0];
        $height = $imgsize[1];
        $mime = $imgsize['mime'];

        switch($mime){
            case 'image/gif':
                $image_create = "imagecreatefromgif";
                $image = "imagegif";
                break;

            case 'image/png':
                $image_create = "imagecreatefrompng";
                $image = "imagepng";
                $quality = 7;
                break;

            case 'image/jpeg':
                $image_create = "imagecreatefromjpeg";
                $image = "imagejpeg";
                $quality = 80;
                break;

            default:
                return false;
                break;
        }

        $dst_img = imagecreatetruecolor($max_width, $max_height);
        $src_img = $image_create($source_file);

        $width_new = $height * $max_width / $max_height;
        $height_new = $width * $max_height / $max_width;
        //if the new width is greater than the actual width of the image, then the height is too large and the rest cut off, or vice versa
        if($width_new > $width){
            //cut point by height
            $h_point = (($height - $height_new) / 2);
            //copy image
            imagecopyresampled($dst_img, $src_img, 0, 0, 0, $h_point, $max_width, $max_height, $width, $height_new);
        }else{
            //cut point by width
            $w_point = (($width - $width_new) / 2);
            imagecopyresampled($dst_img, $src_img, 0, 0, $w_point, 0, $max_width, $max_height, $width_new, $height);
        }

        $image($dst_img, $dst_dir, $quality);

        if($dst_img)imagedestroy($dst_img);
        if($src_img)imagedestroy($src_img);
    }