php获得图像的属性函数

<?php/** * 取得图像信息 *  * 用法： * -------------------------------------- * $info = getImageInfo('test.jpg'); * -------------------------------------- *  * @param string $image 图像文件名 *  * @return mixed */function getImageInfo($image) {    $imageInfo = getimagesize($image);    if ($imageInfo !== FALSE) {        $imageType = strtolower(substr(image_type_to_extension($imageInfo[2]), 1));        $imageSize = filesize($image);        $info = array(            "width" => $imageInfo[0],            "height" => $imageInfo[1],            "type" => $imageType,            "size" => $imageSize,            "mime" => $imageInfo['mime']        );        return $info;    } else {        return FALSE;    }}?>