在PHP中将图像分为三种尺寸

这是我接收数据的PHP文件.

$uploadPath  = 'C:/xampp/htdocs/OSFiles/of-images/images/';

if(!is_dir($uploadPath))
    mkdir($uploadPath,true) or trigger_error("Can't Create Folder");

$file   = tempnam($uploadPath,'image');
$fp     = fopen($file,'wb');
fwrite($fp,$binary);   //$binary is--> I am reading the image in binary as I am getting the photo data in base64 encoded format through mobile client side. So I decoded it to binary.

fclose($fp);

$result1 = mysql_query("INSERT INTO oc_t_item_resource(fk_i_item_id,s_name,s_extension,s_content_type,s_path)
        VALUES('$lastid','$s_name','$extension','$s_content_type','$imagepath')");

$imagelastid = mysql_insert_id();

// Create normal size
$normal_path = $path = $uploadPath . $imagelastid . '.jpg' ;
$size = explode('x','640x480') ;

ImageResizer::fromFile($file)->resizeTo($size[0],$size[1])->saveToFile($path) ;

// Create preview
$path = $uploadPath . $imagelastid . '_preview.jpg' ;
$size = explode('x','480x340') ;
ImageResizer::fromFile($file)->resizeTo($size[0],$size[1])->saveToFile($path) ;

// Create thumbnail
$path = $uploadPath . $imagelastid . '_thumbnail.jpg' ;
$size = explode('x','240x200') ;
ImageResizer::fromFile($file)->resizeTo($size[0],$size[1])->saveToFile($path) ;

这是我在ImageResizer.php文件中的ImageResizer类.

<?php
    class ImageResizer {

        public static function fromFile($imagePath) {
            return new ImageResizer($imagePath);
        }

        private $im;

        private function __construct($imagePath) {
            if(!file_exists($imagePath)) throw new Exception("$imagePath does not exist!");
            if(!is_readable($imagePath)) throw new Exception("$imagePath is not readable!");
            if(filesize($imagePath)==0) throw new Exception("$imagePath is corrupt or broken!");

            if(osc_use_imagick()) {
                $this->im = new Imagick($imagePath);
            } else {
                $content = file_get_contents($imagePath);
                $this->im = imagecreatefromstring($content);
            }

            return $this;
        }

        public function __destruct() {
            if(osc_use_imagick()) {
                $this->im->destroy();
            } else {
                imagedestroy($this->im);
            }
        }

        public function resizeTo($width,$height) {
            if(osc_use_imagick()) {
                $bg = new Imagick();
                $bg->newImage($width,$height,'white');

                $this->im->thumbnailImage($width,true);
                $geometry = $this->im->getImageGeometry();

                $x = ( $width - $geometry['width'] ) / 2;
                $y = ( $height - $geometry['height'] ) / 2;

                $bg->compositeImage( $this->im,imagick::COMPOSITE_OVER,$x,$y );
                $this->im = $bg;
            } else {
                $w = imagesx($this->im);
                $h = imagesy($this->im);

                if(($w/$h)>=($width/$height)) {
                    //$newW = $width;
                    $newW = ($w > $width)? $width : $w;
                    $newH = $h * ($newW / $w);
                } else {
                    //$newH = $height;
                    $newH = ($h > $height)? $height : $h;
                    $newW = $w * ($newH / $h);
                }

                $newIm = imagecreatetruecolor($width,$height);//$newW,$newH);
                imagealphablending($newIm,false);
                $colorTransparent = imagecolorallocatealpha($newIm,255,127);
                imagefill($newIm,$colorTransparent);
                imagesavealpha($newIm,true);
                imagecopyresampled($newIm,$this->im,(($width-$newW)/2),(($height-$newH)/2),$newW,$newH,$w,$h);
                imagedestroy($this->im);

                $this->im = $newIm;
            }
            return $this;
        }

        public function saveToFile($imagePath) {
            if(file_exists($imagePath) && !is_writable($imagePath)) throw new Exception("$imagePath is not writable!");
            if(osc_use_imagick()) {
                $this->im->setImageFileName($imagePath);
                $this->im->writeImage($imagePath);
            } else {
                imagejpeg($this->im,$imagePath);
            }
        }

        public function show() {
            header('Content-Disposition: Attachment;filename=image.jpg');
            header('Content-type: image/jpg');
            if(osc_use_imagick()) {
            } else {
                imagepng($this->im);
            }
        }
    }
?>

图像文件夹中根本没有存储图像.我哪里错了？

我们将非常感谢带有更正的代码段.

(我是PHP的新人,所以请保持温柔.)