php下载文件并保存到指定文件夹

php下载图片并保存到指定文件夹

function GrabImage($url, $dir, $filename=''){if(empty($url)){return false;}$ext = strrchr($url, '.');if($ext != '.gif' && $ext != ".jpg" && $ext != ".bmp"){echo "格式不支持！";return false;}$dir = realpath($dir);//目录+文件$filename = (empty($filename) ? '/'.time().''.$ext : '/'.$filename);$filename = $dir . $filename;//开始捕捉 ob_start(); readfile($url); $img = ob_get_contents(); ob_end_clean(); $size = strlen($img); $fp2 = fopen($filename , "a"); fwrite($fp2, $img); fclose($fp2); return $filename; }

//测试 $imgpath="https://ss0.bdstatic.com/94oJfD_bAAcT8t7mm9GUKT-xh_/timg?image&quality=100&size=b4000_4000&sec=1483602960&di=f93d78756010023602ecb700b802658f&src=http://pic.90sjimg.com/back_pic/u/00/38/54/05/560412efec2d6.jpg";GrabImage($imgpath,"D://img");//(图片地址,存放目录,存放显示文件名称)；