<?php

/*

//下载

$filename = 'av.zip';

// 设置类型：可以省略

// header("content-type:image/jpeg");

//设置文件为附件

header("content-disposition:attachment;filename=".$filename);

//文件大小

header("content-length:".readfile($filename));

//输出下载

readfile($filename);

*/

//

$gd = gd_info();

$gdinfo = $gd["GD Version"];

echo $gdinfo;

$pattern = '/\(((.*?)\w[a-zA-Z]{1,})\)/';

preg_match($pattern,$gdinfo,$arr);

echo $arr[2];

//$copy = $arr[1];

//echo $copy;