<?phpclass ImageTool{    private $imagePath;//图片路径    private $outputDir;//输出文件夹    private $memoryImg;//内存图像    public function __construct($imagePath, $outputDir = null)    {        $this->imagePath = $imagePath;        $this->outputDir = $outputDir;        $this->memoryImg = null;    }    /**     * 显示内存中的图片     * @param $image     */    public function showImage()    {        if ($this->memoryImg != null) {            $info = getimagesize($this->imagePath);            $type = image_type_to_extension($info[2], false);            header(‘Content-type:‘ . $info[‘mime‘]);            $funs = "image{$type}";            $funs($this->memoryImg);            imagedestroy($this->memoryImg);            $this->memoryImg = null;        }    }    /**将图片以文件形式保存     * @param $image     */    private function saveImage($image)    {        $info = getimagesize($this->imagePath);        $type = image_type_to_extension($info[2], false);        $funs = "image{$type}";        if (empty($this->outputDir)) {            $funs($image, md5($this->imagePath) . ‘.‘ . $type);        } else {            $funs($image, $this->outputDir . md5($this->imagePath) . ‘.‘ . $type);        }    }    /**     * 压缩图片     * @param $width 压缩后宽度     * @param $height 压缩后高度     * @param bool $output 是否输出文件     * @return resource     */    public function compressImage($width, $height, $output = false)    {        $image = null;        $info = getimagesize($this->imagePath);        $type = image_type_to_extension($info[2], false);        $fun = "imagecreatefrom{$type}";        $image = $fun($this->imagePath);        $thumbnail = imagecreatetruecolor($width, $height);        imagecopyresampled($thumbnail, $image, 0, 0, 0, 0, $width, $height, $info[0], $info[1]);        imagedestroy($image);        if ($output) {            $this->saveImage($thumbnail);        }        $this->memoryImg = $thumbnail;        return $this;    }    /**     * 为图像添加文字标记     *     * @param $content 文本内容     * @param $size 字体大小     * @param $font 字体样式     * @param bool $output 是否输出文件     * @return $this     */    public function addTextmark($content, $size, $font, $output = false)    {        $info = getimagesize($this->imagePath);        $type = image_type_to_extension($info[2], false);        $fun = "imagecreatefrom{$type}";        $image = $fun($this->imagePath);        $color = imagecolorallocatealpha($image, 0, 0, 0, 80);        $posX = imagesx($image) - strlen($content) * $size / 2;        $posY = imagesy($image) - $size / 1.5;        imagettftext($image, $size, 0, $posX, $posY, $color, $font, $content);        if ($output) {            $this->saveImage($image);        }        $this->memoryImg = $image;        return $this;    }    /**     * 为图片添加水印     *     * @param $watermark 水印图片路径     * @param $alpha 水印透明度(0-100)     * @param bool $output 是否输出文件     * @return $this     */    public function addWatermark($watermark, $alpha, $output = false)    {        $image_info = getimagesize($this->imagePath);        $image_type = image_type_to_extension($image_info[2], false);        $image_fun = "imagecreatefrom{$image_type}";        $image = $image_fun($this->imagePath);        $mark_info = getimagesize($watermark);        $mark_type = image_type_to_extension($mark_info[2], false);        $mark_fun = "imagecreatefrom{$mark_type}";        $mark = $mark_fun($watermark);        $posX = imagesx($image) - imagesx($mark);        $posY = imagesy($image) - imagesy($mark);        imagecopymerge($image, $mark, $posX, $posY, 0, 0, $mark_info[0], $mark_info[1], $alpha);        if ($output) {            $this->saveImage($image);        }        $this->memoryImg = $image;        return $this;    }}

require_once ‘ImageTool.class.php‘;

$imageTool = new ImageTool(‘img/oppman.jpeg‘, ‘out/‘);//图片路径、输出文件夹

$imageTool->compressImage(350, 250, true);//压缩宽度、压缩高度、是否保存$imageTool->showImage();

$imageTool->addTextmark(‘一拳超人‘, 50, ‘res/micro.ttf‘, true);//内容、尺寸、字体、是否保存$imageTool->showImage();

$imageTool->addWatermark(‘res/logo.jpeg‘, 100, true);//水印路径、透明度、是否保存$imageTool->showImage();

$imageTool->addTextmark(‘快捷输出‘, 50, ‘res/micro.ttf‘)->showImage();