当下载文件需要与服务端交互时，就需要用脚本来实现，而不是单纯地链接到文件的地址
下载mp3文件的例子
<?php
$file_path = './data/upload/song/sample.mp3';
$file_name = 'sample.mp3';
$file_size = filesize($file_path);
header ( "Pragma: public" );
header ( "Cache-Control: must-revalidate, post-check=0, pre-check=0" );
header ( "Cache-Control: private", false );
header ( "Content-Transfer-Encoding: binary" );
header ( "Content-Type:audio/mpeg MP3");
header ( "Content-Length: " . $file_size);
header ( "Content-Disposition: attachment; filename=".$file_name);
echo(file_get_contents($file_path));
exit;
?>
以下列表来自http://hi.baidu.com/zbzb /blog/item/643cd60021d25d11738b6530.html
Content-type 的说明 'application/andrew-inset',
'hqx' => 'application/mac-binhex40',
'cpt' => 'application/mac-compactpro',
'doc' => 'application/msword',
'bin' => 'application/octet-stream',
'dms' => 'application/octet-stream',
'lha' => 'application/octet-stream',
'lzh' => 'application/octet-stream',
'exe' => 'application/octet-stream',
'class' => 'application/octet-stream',
'so' => 'application/octet-stream',
'dll' => 'application/octet-stream',
'oda' => 'application/oda',
'pdf' => 'application/pdf',
'ai' => 'application/postscript',
'eps' => 'application/postscript',
'ps' => 'application/postscript',
'smi' => 'application/smil',
'smil' => 'application/smil',
'mif' => 'application/vnd.mif',
'xls' => 'application/vnd.ms-excel',
'ppt' => 'application/vnd.ms-powerpoint',
'wbxml' => 'application/vnd.wap.wbxml',
'wmlc' => 'application/vnd.wap.wmlc',
'wmlsc' => 'application/vnd.wap.wmlscriptc',
'bcpio' => 'application/x-bcpio',
'vcd' => 'application/x-cdlink',
'pgn' => 'application/x-chess-pgn',
'cpio' => 'application/x-cpio',
'csh' => 'application/x-csh',
'dcr' => 'application/x-director',
'di
1. PHP可阅读随机字符串
此代码
将创建一个可阅读的字符串，使其更接近词典中的单
词，实用且具有密码验证功能。
/**************
[email=*@length]*@length[/email] - length of random string (must be a
multiple of 2)
**************/
function readable_random_string($length = 6){
$conso= ......
用PHP实现进度条效果。
<?php
set_time_limit(0);
echo '<h2>正在安装，请稍后...</h2>',
'<div style="border:1px solid #000;width:500px;"><div id="progress_bar">loading...</div></div>';
for($i=1;$i<=100;$i++){
$width = '500';
......
