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- 图片批量缩放
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-
- class tool_slt_resize{
- public $width=null;
- public $height=null;
- public $Msg=null;
- public $extension=array('jpg','gif','jpeg','png','bmp');
- public function __construct(){
- header('Content-type: text/html; charset=UTF-8');
- }
- /**
- * 读取一个文件夹下所有的文件
- * @param $src 文件夹路径
- * @return bool
- */
- public function getAllFile($src,$new){
- set_time_limit(0); //php脚本运行时间无限时
- ob_end_clean(); //关键1
- echo str_pad('',1024); //关键2
- $handle=opendir($src); //打开一个目录句柄
- while(($file=readdir($handle)) !== false){ //循环遍历目录下的所有文件
- if($file != '.' && $file != '..' ){ //如果不是当前目录或者上层目录
- $fullPath = $src.'/'.$file; //得到当前文件的全路径
- $newPath = $new.'/'.$file; //新的文件存放路径
- $dir=dirname($newPath);
- if(!file_exists($dir)){
- mkdir($dir);
- }
- if(is_dir($fullPath)){ //判断是否表示一个文件夹
- $this->getAllFile($fullPath,$newPath); //是文件夹的话再递归执行一次函数
- }else{ //开始图像处理
- $extentsion=$this->get_extension($fullPath);
- if(in_array($extentsion,$this->extension)){ //后缀是否合法
- // echo $newPath.'';
- $im = imagecreatefromjpeg($fullPath);
- $width = imagesx($im);
- $height = imagesy($im);
- $this->resize_to($im,$width,$height,$this->width,$this->height,$fullPath,$newPath);
- $msg= $fullPath.'处理完成';
- echo $msg;
- flush(); //刷新输出缓冲
- }
- }
- }
- }
- echo '全部处理完成';
- }
- /**
- * 获得一些图像的信息
- * getimagesize返回一个四个单元的数组($width, $height, $type, $attr)
- * @param $src
- * @return array
- */
- public function getImgInfo($src){
- return getimagesize($src);
- }
- /**
- * 获得文件后缀
- * @param $file
- * @return mixed
- */
- function get_extension($file){
- $info = pathinfo($file);
- return strtolower($info['extension']);
- }
- //图像缩放
- public function resize_to($image,$width,$height,$dst_width,$dst_height,$path,$dstpath){
- // set_time_limit(0);
- $resize_width = 0;
- $resize_height = 0;
- if($dst_width && $width > $dst_width ){
- $resize_width = 1;
- $width_ratio = $dst_width/$width;
- }
- if($dst_height && $height > $dst_height){
- $resize_height = 1;
- $height_ratio = $dst_height/$height;
- }
- if($resize_height&&$resize_width){
- //宽度优先
- if($width_ratio < $height_ratio){
- $scale_org[0] = $width * $width_ratio;
- $scale_org[1] = $height * $width_ratio;
- }
- //高度优先
- else{
- $scale_org[0] = $width * $height_ratio;
- $scale_org[1] = $height * $height_ratio;
- }
- }
- elseif($resize_width){
- $scale_org[0] = $dst_width;
- $scale_org[1] = $dst_width*$height/$width;
- }
- elseif($resize_height){
- $scale_org[0] = $dst_height*$width/$height;
- $scale_org[1] = $dst_height;
- }
- if(function_exists("imagecopyresampled")){
- $newim = imagecreatetruecolor($scale_org[0], $scale_org[1]);
- imagecopyresampled($newim, $image, 0, 0, 0, 0, $scale_org[0], $scale_org[1], $width, $height);
- }else{
- $newim = imagecreate($scale_org[0], $scale_org[1]);
- imagecopyresized($newim, $image, 0, 0, 0, 0,$scale_org[0], $scale_org[1], $width, $height);
- }
- ImageJpeg ($newim,$dstpath);
- ImageDestroy ($newim);
- }
- }
- $a=new tool_slt_resize(); //接受表单数据开始处理图片
- $oldPath=isset($_GET['oldPath'])?$_GET['oldPath']:'';
- $newPath=isset($_GET['newPath'])?$_GET['newPath']:'';
- $width=isset($_GET['width'])?$_GET['width']:'';
- $height=isset($_GET['height'])?$_GET['height']:'';
- $a->width=$width;
- $a->height=$height;
- if(isset($_GET['submit'])){
- if($oldPath==''||$newPath==''||$width==''){
- echo '请正确填写表单';
- exit;
- }else{
- $a->getAllFile($oldPath,$newPath);
- }
- }
- ?>
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图片批量缩放 -
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