class image_ext {    /*     * 图片微缩白边补齐     * 所用的是GD库     *  $suffix 新图片后缀名称，如果为空，则为width_height; 缩略图后缀为：   ‘thumb’     *  图片统一后缀 .jpg     */    function PicZoom($pic_path, $width = 200, $height = 200, $suffix = ‘‘, $bk_rgb = array(255, 255, 255), $is_del_ori=false) {        if (!$pic_path || !file_exists($pic_path)) {            return false;        }        if (!function_exists(‘imagecreatetruecolor‘)) {            return false;        }        $arr_src = array();        $arr_tmp = getimagesize($pic_path);        if (!$arr_tmp) {            return false; //不是图片            }        //获得原始图像的大小        $arr_src [‘width‘] = $arr_tmp [0];        $arr_src [‘height‘] = $arr_tmp [1];        //取得文件扩展名        $mime_tmp = explode(‘/‘, $arr_tmp[‘mime‘]);        $ext = $mime_tmp[1];        //生成的新图片后缀，一律存成JPG        if ($suffix) {            if (strpos($suffix, ‘/‘) !== false) {                return false;            }            $suffix = trim($suffix, ‘.‘);        }        $suffix = $suffix ? $suffix : $width . ‘_‘ . $height;        $arr_src [‘new_path‘] = $pic_path . ‘.‘ . $suffix . ‘.jpg‘;        //如果新生成图片的尺寸宽与高都大于原图，则不压缩补白        if ($width > $arr_src [‘width‘] && $height > $arr_src [‘height‘]) {            return $this->savePic($pic_path, $suffix);        }        //根据比例计算新的长宽 目标的坐标x y        if ($width / $height > $arr_src [‘width‘] / $arr_src [‘height‘]) { //以height为基准            $arr_src [‘new_height‘] = $height;            $arr_src [‘new_width‘] = $arr_src [‘width‘] / $arr_src [‘height‘] * $height;            $arr_src [‘to_x‘] = ($width - $arr_src [‘new_width‘]) / 2;            $arr_src [‘to_y‘] = 0;        } else { //以width为基准            $arr_src [‘new_width‘] = $width;            $arr_src [‘new_height‘] = $arr_src [‘height‘] / $arr_src [‘width‘] * $width;            $arr_src [‘to_x‘] = 0;            $arr_src [‘to_y‘] = ($height - $arr_src [‘new_height‘]) / 2;        }        //列出创建图片资源的函数表        $create_fun_map = array(‘jpg‘ => ‘imagecreatefromjpeg‘, ‘jpeg‘ => ‘imagecreatefromjpeg‘, ‘gif‘ => ‘imagecreatefromgif‘, ‘png‘ => ‘imagecreatefrompng‘);        if (!$create_fun_map [$ext])            return false;        $create_fun = $create_fun_map [$ext];        //参数计算完毕，创建图像        $dst_img = imagecreatetruecolor($width, $height);        $bk_color = imagecolorallocate($dst_img, 0xFF, 0xFF, 0xFF);        imagefill($dst_img, 0, 0, $bk_color);        $src_img = $create_fun($pic_path);        imagecopyresampled($dst_img, $src_img, $arr_src [‘to_x‘], $arr_src [‘to_y‘], 0, 0, $arr_src [‘new_width‘], $arr_src [‘new_height‘], $arr_src [‘width‘], $arr_src [‘height‘]);        //输出到文件        //$arr_src [‘new_path‘] = $oldimgurlArr[0].‘/‘.$oldimgurlArr[1].‘/‘.$oldimgurlArr[2].‘/‘.$oldimgurlArr[3].‘/‘.date(‘Ym‘).‘/‘.date(‘d‘).‘/‘.$oldimgurlArr[6] . $width . ‘_‘ . $height . ‘.jpg‘;        $targetpath = dirname($arr_src [‘new_path‘]);        dmkdir($targetpath);        //如果没有此文件夹就创建文件夹        imagejpeg($dst_img, $arr_src [‘new_path‘]);        //销毁各方资源        imagedestroy($dst_img);        imagedestroy($src_img);        if ($is_del_ori) {            @unlink($pic_path);        }        return true;    }    /*     *  图片另存为 指定后缀的文件     *  原旨在保存原图     */    function savePic($pic_path, $suffix = ‘original‘) {        if (!$suffix || strpos($suffix, ‘/‘) !== false) {            return false;        }        $suffix = trim($suffix, ‘.‘);        $new_path = $pic_path . ‘.‘ . $suffix . ‘.jpg‘;                if (@copy($source, $new_path)) {            return true;        } elseif (@is_readable($source) && (@$fp_s = fopen($source, ‘rb‘)) && (@$fp_t = fopen($new_path, ‘wb‘))) {            while (!feof($fp_s)) {                $s = @fread($fp_s, 1024 * 512);                @fwrite($fp_t, $s);            }            fclose($fp_s);            fclose($fp_t);            return true;        } else {            $content = file_get_contents($pic_path);            file_put_contents($new_path, $content);            return true;        }             }    /*     * 上传指定大小的图片     */    function uploadedPicZoom($filesArr, $w, $h, $pic_path) {        if ((($filesArr ["file"] ["type"] == "image/gif")                || ($filesArr ["file"] ["type"] == "image/jpeg")                || ($filesArr ["file"] ["type"] == "image/pjpeg"))                && ($filesArr ["file"] ["size"] < 204800)) {            if ($filesArr ["file"] ["error"] > 0) {                print ‘文件类型错误‘;                return false;            } else {                $file_name = time() . $filesArr ["file"] ["name"];                if (file_exists($pic_path . $file_name)) {                    print ‘文件重名‘;                    return false;                } else {                    $targetpath = dirname($pic_path . $file_name);                    dmkdir($targetpath);                    move_uploaded_file($filesArr ["file"] ["tmp_name"], $pic_path . $file_name);                    return $this->PicZoom($pic_path . $file_name, $w, $h, $w . ‘_‘ . $h, $bk_rgb = array(255, 255, 255), true);                }            }        } else {            print ‘格式错误或者文件太大‘;            return false;        }    }    /**     *  上传图片压缩截取 生成指定宽高的图片     *  $suffix 新图片后缀名称，如果为空，则为width_height; 缩略图后缀为：   ‘thumb’     *  图片统一后缀 .jpg     *       */    function PicCompress($pic_path, $width = 100, $height = 100, $suffix = ‘‘) {        if (!$pic_path || !file_exists($pic_path)) {            return false;        }        if (!function_exists(‘imagecreatetruecolor‘)) {            return false;        }        $arr_tmp = getimagesize($pic_path);        if (!$arr_tmp) {            return false; //不是图片            }        $arr_src = array();        //获得原始图像的大小        $arr_src [‘width‘] = $arr_tmp [0];        $arr_src [‘height‘] = $arr_tmp [1];        //取得文件扩展名        $mime_tmp = explode(‘/‘, $arr_tmp[‘mime‘]);        $ext = $mime_tmp[1];        //生成的新图片后缀，一律存成JPG        if ($suffix) {            if (strpos($suffix, ‘/‘) !== false) {                return false;            }            $suffix = trim($suffix, ‘.‘);        }        $suffix = $suffix ? $suffix : $width . ‘_‘ . $height;        $arr_src [‘new_path‘] = $pic_path . ‘.‘ . $suffix . ‘.jpg‘;        //如果新生成图片的尺寸宽与高都大于原图，则不压缩截取        if ($width > $arr_src [‘width‘] && $height > $arr_src [‘height‘]) {            return $this->savePic($pic_path, $suffix);        }        //如果新生成图片的尺寸宽或高大于原图，则按宽或高缩放原图        if ($width > $arr_src [‘width‘] || $height > $arr_src [‘height‘]) {            //$this->PicZoom($pic_path, $width, $height);            return $this->PicSourceZoom($pic_path, $width, $height, $suffix);        }        //根据比例计算新的长宽 目标的坐标x y        if ($width / $height > $arr_src [‘width‘] / $arr_src [‘height‘]) { //以width为基准            $arr_src [‘new_height‘] = $width * ($arr_src [‘height‘] / $arr_src [‘width‘]);            $arr_src [‘new_width‘] = $width;            $arr_src [‘src_y‘] = ($arr_src [‘new_height‘] - $height) / 2;            $arr_src [‘src_x‘] = 0;        } else { //以height为基准            $arr_src [‘new_height‘] = $height;            $arr_src [‘new_width‘] = $height * ($arr_src [‘width‘] / $arr_src [‘height‘]);            $arr_src [‘src_x‘] = ($arr_src [‘new_width‘] - $width) / 2;            $arr_src [‘src_y‘] = 0;        }        //列出创建图片资源的函数表        $create_fun_map = array(‘jpg‘ => ‘imagecreatefromjpeg‘, ‘jpeg‘ => ‘imagecreatefromjpeg‘, ‘gif‘ => ‘imagecreatefromgif‘, ‘png‘ => ‘imagecreatefrompng‘);        if (!$create_fun_map [$ext])            return false;        $create_fun = $create_fun_map [$ext];        //参数计算完毕，创建图像        $dst_img = imagecreatetruecolor($width, $height);        $bk_color = imagecolorallocate($dst_img, 255, 255, 255);        imagefill($dst_img, 0, 0, $bk_color);        $src_img = $create_fun($pic_path);        imagecopyresampled($dst_img, $src_img, 0, 0, $arr_src [‘src_x‘], $arr_src [‘src_y‘], $arr_src [‘new_width‘], $arr_src [‘new_height‘], $arr_src [‘width‘], $arr_src [‘height‘]);        //输出到文件        $targetpath = dirname($arr_src [‘new_path‘]);        dmkdir($targetpath);        //如果没有此文件夹就创建文件夹        imagejpeg($dst_img, $arr_src [‘new_path‘], 95);        //销毁各方资源        imagedestroy($dst_img);        imagedestroy($src_img);        return true;    }    /**     * 上传图片压缩截取 生成指定宽高的图片     * 所用的是GD库     */    function PicCompressNewPath($pic_path, $width = 100, $height = 100, $newpath = ‘‘, $suffix = ‘‘) {        if (!$pic_path || !file_exists($pic_path)) {            return false;        }        if (!function_exists(‘imagecreatetruecolor‘)) {            return false;        }        if (empty($newpath))            $newpath = $pic_path;        $arr_src = array();        $arr_tmp = getimagesize($pic_path);        if (!$arr_tmp) {            return false; //不是图片            }        //获得原始图像的大小        $arr_src [‘width‘] = $arr_tmp [0];        $arr_src [‘height‘] = $arr_tmp [1];        //取得文件扩展名        $mime_tmp = explode(‘/‘, $arr_tmp[‘mime‘]);        $ext = $mime_tmp[1];        //生成的新图片后缀，一律存成JPG        if ($suffix) {            if (strpos($suffix, ‘/‘) !== false) {                return false;            }            $suffix = trim($suffix, ‘.‘);        }        $suffix = $suffix ? $suffix : $width . ‘_‘ . $height;        $arr_src [‘new_path‘] = $newpath . ‘.‘ . $suffix . ‘.jpg‘;        //根据比例计算新的长宽 目标的坐标x y        if ($width / $height > $arr_src [‘width‘] / $arr_src [‘height‘]) { //以width为基准            $arr_src [‘new_height‘] = $width * ($arr_src [‘height‘] / $arr_src [‘width‘]);            $arr_src [‘new_width‘] = $width;            $arr_src [‘src_y‘] = ($arr_src [‘new_height‘] - $height) / 2;            $arr_src [‘src_x‘] = 0;        } else { //以height为基准            $arr_src [‘new_height‘] = $height;            $arr_src [‘new_width‘] = $height * ($arr_src [‘width‘] / $arr_src [‘height‘]);            $arr_src [‘src_x‘] = ($arr_src [‘new_width‘] - $width) / 2;            $arr_src [‘src_y‘] = 0;        }        //列出创建图片资源的函数表        $create_fun_map = array(‘jpg‘ => ‘imagecreatefromjpeg‘, ‘jpeg‘ => ‘imagecreatefromjpeg‘, ‘gif‘ => ‘imagecreatefromgif‘, ‘png‘ => ‘imagecreatefrompng‘);        if (!$create_fun_map [$ext])            return false;        $create_fun = $create_fun_map [$ext];        //参数计算完毕，创建图像        $dst_img = imagecreatetruecolor($width, $height);        $bk_color = imagecolorallocate($dst_img, 255, 255, 255);        imagefill($dst_img, 0, 0, $bk_color);        $src_img = $create_fun($pic_path);        imagecopyresampled($dst_img, $src_img, 0, 0, $arr_src [‘src_x‘], $arr_src [‘src_y‘], $arr_src [‘new_width‘], $arr_src [‘new_height‘], $arr_src [‘width‘], $arr_src [‘height‘]);        //输出到文件        $targetpath = dirname($arr_src [‘new_path‘]);        dmkdir($targetpath);        //如果没有此文件夹就创建文件夹        imagejpeg($dst_img, $arr_src [‘new_path‘], 95);        //销毁各方资源        imagedestroy($dst_img);        imagedestroy($src_img);        return true;    }    /**     * 图片按指定的宽，或高缩放，重新生成     * 如果没有后缀，则直接缩放原图     * @param $pic_path     * @param $width 指定图片宽     * @param $height 指定图片高     */    function PicSourceZoom($pic_path, $width = ‘‘, $height = ‘‘, $suffix = ‘‘) {        if (!$pic_path || !file_exists($pic_path)) {           return false;        }        if (!$width && !$height) {           return false;        }                if (!function_exists(‘imagecreatetruecolor‘)) {           return false;        }        $arr_src = array();        $arr_tmp = getimagesize($pic_path);        if (!$arr_tmp) {           return false; //不是图片            }        //获得原始图像的大小        $arr_src [‘width‘] = $arr_tmp [0];        $arr_src [‘height‘] = $arr_tmp [1];                //如果新生成图片的尺寸宽与高都大于原图，则不压缩图片,另存指定尺寸图片        if ($width > $arr_src [‘width‘] && $height > $arr_src [‘height‘] && $suffix) {            return $this->savePic($pic_path, $suffix);        }        //如果新生成图片的尺寸宽大于原图，宽需重新指定        if ($width > $arr_src [‘width‘]) {            $width = ‘‘;        }        if ($height > $arr_src [‘height‘]) {            $height = ‘‘;        }        if (!$width && !$height) {           return false;        }        //重新定义给定的等比压缩宽，高        if ($width && $width > $arr_src [‘width‘]) {            $width = $arr_src [‘width‘];        }        if ($height && $height > $arr_src [‘height‘]) {            $height = $arr_src [‘height‘];        }        //取得文件扩展名        $mime_tmp = explode(‘/‘, $arr_tmp[‘mime‘]);        $ext = $mime_tmp[1];        if ($suffix) {            if (strpos($suffix, ‘/‘) !== false) {                return false;            }            $suffix = trim($suffix, ‘.‘);            $arr_src [‘new_path‘] = $pic_path . ‘.‘ . $suffix . ‘.jpg‘;        } else {            $arr_src [‘new_path‘] = $pic_path;        }        //根据给定宽、高计算目标坐标x y        if ($width && !$height) {            $arr_src [‘new_width‘] = $width;            $arr_src [‘new_height‘] = $arr_src [‘height‘] / $arr_src [‘width‘] * $width;            $height = $arr_src [‘height‘] / $arr_src [‘width‘] * $width;        }        if (!$width && $height) {            $arr_src [‘new_height‘] = $height;            $arr_src [‘new_width‘] = $arr_src [‘width‘] / $arr_src [‘height‘] * $height;            $width = $arr_src [‘width‘] / $arr_src [‘height‘] * $height;        }        $arr_src [‘to_x‘] = 0;        $arr_src [‘to_y‘] = 0;        //列出创建图片资源的函数表        $create_fun_map = array(‘jpg‘ => ‘imagecreatefromjpeg‘, ‘jpeg‘ => ‘imagecreatefromjpeg‘, ‘gif‘ => ‘imagecreatefromgif‘, ‘png‘ => ‘imagecreatefrompng‘);        if (!$create_fun_map [$ext])           return false;        $create_fun = $create_fun_map [$ext];        //参数计算完毕，创建图像        $dst_img = imagecreatetruecolor($width, $height);        $bk_color = imagecolorallocate($dst_img, 0xFF, 0xFF, 0xFF);        imagefill($dst_img, 0, 0, $bk_color);        $src_img = $create_fun($pic_path);        imagecopyresampled($dst_img, $src_img, $arr_src [‘to_x‘], $arr_src [‘to_y‘], 0, 0, $arr_src [‘new_width‘], $arr_src [‘new_height‘], $arr_src [‘width‘], $arr_src [‘height‘]);        //输出到文件        $targetpath = dirname($arr_src [‘new_path‘]);        dmkdir($targetpath);        //如果没有此文件夹就创建文件夹        imagejpeg($dst_img, $arr_src [‘new_path‘], 100);        //销毁各方资源        imagedestroy($dst_img);        imagedestroy($src_img);        return true;    }    /*     *  原图生成不同尺寸的图片，     *  压缩截取     */    function manySizesPicCompress($pic_path, $sizesArr, $bk_rgb = array(255, 255, 255)) {        if (!is_array($sizesArr) || count($sizesArr) == 0) {            echo ‘sizesArr  error‘;        }        foreach ($sizesArr as $value) {            $width = $value[‘width‘];            $height = $value[‘height‘];            if (!$width || !$height) {                continue;            }            $zoomtype = $value[‘zoomtype‘];            if ($zoomtype) {                $this->PicCompress($pic_path, $width, $height);            } else {                $this->PicZoom($pic_path, $width, $height);            }        }    }}