本篇文章主要介绍php在线压缩zip文件的方法，感兴趣的朋友参考下，希望对大家有所帮助。
代码如下：
<?php
//在URL后参加 ?pwd=密码 查看生成密码
$password = '8baa717e6265d1c1d762cc896151f821'; //l23
?>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>php ZIP压缩程序</title>
<style type="text/css">
<!--
html{background:#f9f9f9;}body{background:#fff;color:#333;font-family:sans-serif;margin:2em auto;width:700px;padding:1em 2em;-moz-border-radius:11px;-khtml-border-radius:11px;-webkit-border-radius:11px;border-radius:11px;border:1px solid #dfdfdf;}a{color:#2583ad;text-decoration:none;}a:hover{color:#d54e21;}h1{border-bottom:1px solid #dadada;clear:both;color:#666;font:24px Georgia,"Times New Roman",Times,serif;margin:5px 0 0 -4px;padding:0;padding-bottom:7px;}h2{font-size:16px;}p,li,dd,dt{padding-bottom:2px;font-size:12px;line-height:18px;}code,.code{font-size:13px;}ul,ol,dl{padding:5px 5px 5px 22px;}a img{border:0;}abbr{border:0;font-variant:normal;}#logo{margin:6px 0 14px 0;border-bottom:none;text-align:center;}.step{margin:20px 0 15px;}.step,th{text-align:left;padding:0;}.submit input,.button,.button-secondary{font-family:sans-serif;text-decoration:none;font-size:14px!important;line-height:16px;padding:6px 12px;cursor:pointer;border:1px solid #bbb;color:#464646;-moz-border-radius:15px;-khtml-border-radius:15px;-webkit-border-radius:15px;border-radius:15px;-moz-box-sizing:content-box;-webkit-box-sizing:content-box;-khtml-box-sizing:content-box;box-sizing:content-box;}.button:hover,.button-secondary:hover,.submit input:hover{color:#000;border-color:#666;}textarea{border:1px solid #bbb;-moz-border-radius:3px;-khtml-border-radius:3px;-webkit-border-radius:3px;border-radius:3px;}.form-table{border-collapse:collapse;margin-top:1em;width:100%;}.form-table td{margin-bottom:9px;padding:10px;border-bottom:8px solid #fff;font-size:12px;}.form-table th{font-size:13px;text-align:left;padding:16px 10px 10px 10px;border-bottom:8px solid #fff;width:130px;vertical-align:top;}.form-table tr{background:#f3f3f3;}.form-table code{line-height:18px;font-size:18px;}.form-table p{margin:4px 0 0 0;font-size:11px;}.form-table input{line-height:20px;font-size:15px;padding:2px;}.form-table th p{font-weight:normal;}#error-page{margin-top:50px;}#error-page p{font-size:12px;line-height:18px;margin:25px 0 20px;}#error-page code,.code{font-family:Consolas,Monaco,monospace;}#pass-strength-result{background-color:#eee;border-color:#ddd!important;border-style:solid;border-width:1px;margin:5px 5px 5px 1px;padding:5px;text-align:center;width:200px;display:none;}#pass-strength-result.bad{background-color:#ffb78c;border-color:#ff853c!important;}#pass-strength-result.good{background-color:#ffec8b;border-color:#fc0!important;}#pass-strength-result.short{background-color:#ffa0a0;border-color:#f04040!important;}#pass-strength-result.strong{background-color:#c3ff88;border-color:#8dff1c!important;}.message{border:1px solid #e6db55;padding:.3em .6em;margin:5px 0 15px;background-color:#ffffe0;}
.mydirname {color:#F00;}
.myfilename {color:#649ABE;}
.currentdir {font-size:14px;font-family: Georgia, Consolas;font-weight:bold;}
#footer {text-align:center;margin-top:20px;}
-->
</style>
</head>
<body>
<form name="myform" id="myform" method="post" action="<?php echo $_SERVER['PHP_SELF'];?>">
<h1 style="color:#2583ad;">在线压缩ZIP文件程序</h1><br>
<p>
<p>使用方法:选定要压缩的文件或目录（包含子目录），即可开始压缩。压缩的结果保留原来的目录结构。<br />
<?php if(isset($_REQUEST['pwd']) && md5($_REQUEST['pwd']) == $password)
echo '当前目录：<span>'. dirname(__FILE__) . '</span> <a href="'.
$_SERVER['PHP_SELF']. '">退出</a>';
else
if(isset($_GET['pwd']) )
echo '密码值：<span>'. md5($_GET['pwd']) . '</span>';
else
echo 'Tips:在URL后参加<span>?pwd=密码</span> 查看生成密码.';
?>
</p>
</p>
<?
if(!isset($_REQUEST["myaction"])):
?>
<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="11%">验证密码: </td>
<td width="89%"><input name="pwd" type="password" id="password" size="30" onkeydown="if(event.ctrlKey&&event.keyCode==13){document.getElementById('login').click();return false};"></td>
</tr>
<tr>
<td><input name="myaction" type="hidden" id="myaction" value="dolist"></td>
<td><input type="submit" name="Submit" id="login" value=" 进 入 "></td>
</tr>
</table>
<script type="text/javascript">
document.getElementById('password').focus();
</script>
<?
elseif($_REQUEST["myaction"]=="dolist"):
if(!isset($_REQUEST['pwd']) || empty($_REQUEST['pwd']) )
die('请输入密码! <a href="'. $_SERVER['PHP_SELF']. '">Again</a>');
if(md5($_REQUEST['pwd']) != $password)
die('输入的密码不正确！<a href="'. $_SERVER['PHP_SELF']. '">Again</a>');
echo '选择要排除的目录(相对路径，以英文半角逗号分隔):<br />';
echo '<input type="text" id="toexlude" name="toexlude" size="100" /><br />';
echo "选择要压缩的文件或目录：<br/>";
$fdir = opendir('./');
while($file=readdir($fdir)){
if($file=='.'|| $file=='..' ) continue;
echo "<input name='dfile[]' type='checkbox' value='$file' ".($file==basename(__FILE__)?"":"checked")."> ";
if(is_file($file)){
echo "<span>文件: $file</span><br>";
}else{
echo "<span>目录: $file</span><br>";
}
}
?>
<br>
压缩文件保存到目录:
<input name="todir" type="text" id="todir" value="_zipfiles<?php echo substr(md5(time()),0,8);?>_" size="20">
(留空为本目录,必须有写入权限)<br>
压缩文件名称:
<input name="zipname" type="text" id="zipname" value="backup_<?php echo substr(md5(__FILE__),0,8);?>.zip" size="15">
(.zip)<br>
<br>
<input name="pwd" type="hidden" id="password" value="<?php echo $_POST['pwd'];?>">
<input name="myaction" type="hidden" id="myaction" value="dozip">
<input type='button' value='反选' onclick='selrev();'>
<input type="submit" name="Submit" value=" 开始压缩 ">
<script language='javascript'>
function selrev() {
with(document.getElementById('myform')){
for(i=0;i<elements.length;i++) {
thiselm = elements[i];
if(thiselm.name.match(/dfile\[]/)) thiselm.checked = !thiselm.checked;
}
}
}
</script>
<?
elseif($_REQUEST["myaction"]=="dozip"):
// set_time_limit(0);
class PHPzip{
var $file_count = 0 ;
var $datastr_len = 0;
var $dirstr_len = 0;
var $filedata = ''; //该变量只被类外部程序访问
var $gzfilename;
var $fp;
var $dirstr='';
/*
返回文件的修改时间格式.
只为本类内部函数调用.
*/
function unix2DosTime($unixtime = 0) {
$timearray = ($unixtime == 0) ? getdate() : getdate($unixtime);
if ($timearray['year'] < 1980) {
$timearray['year'] = 1980;
$timearray['mon'] = 1;
$timearray['mday'] = 1;
$timearray['hours'] = 0;
$timearray['minutes'] = 0;
$timearray['seconds'] = 0;
}
return (($timearray['year'] - 1980) << 25) | ($timearray['mon'] << 21) | ($timearray['mday'] << 16) |
($timearray['hours'] << 11) | ($timearray['minutes'] << 5) | ($timearray['seconds'] >> 1);
}
/*
初始化文件,建立文件目录,
并返回文件的写入权限.
*/
function startfile($path = 'myzip.zip'){
$this->gzfilename=$path;
$mypathdir=array();
do{
$mypathdir[] = $path = dirname($path);
}while($path != '.');
@end($mypathdir);
do{
$path = @current($mypathdir);
@mkdir($path);
}while(@prev($mypathdir));
if($this->fp=@fopen($this->gzfilename,"w")){
return true;
}
return false;
}
/*
添加一个文件到 zip 压缩包中.
*/
function addfile($data, $name){
$name = str_replace('\\', '/', $name);
if(strrchr($name,'/')=='/') return $this->adddir($name);
$dtime = dechex($this->unix2DosTime());
$hexdtime = '\x' . $dtime[6] . $dtime[7]
. '\x' . $dtime[4] . $dtime[5]
. '\x' . $dtime[2] . $dtime[3]
. '\x' . $dtime[0] . $dtime[1];
eval('$hexdtime = "' . $hexdtime . '";');
$unc_len = strlen($data);
$crc = crc32($data);
$zdata = gzcompress($data);
$c_len = strlen($zdata);
$zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2);
//新添文件内容格式化:
$datastr = "\x50\x4b\x03\x04";
$datastr .= "\x14\x00"; // ver needed to extract
$datastr .= "\x00\x00"; // gen purpose bit flag
$datastr .= "\x08\x00"; // compression method
$datastr .= $hexdtime; // last mod time and date
$datastr .= pack('V', $crc); // crc32
$datastr .= pack('V', $c_len); // compressed filesize
$datastr .= pack('V', $unc_len); // uncompressed filesize
$datastr .= pack('v', strlen($name)); // length of filename
$datastr .= pack('v', 0); // extra field length
$datastr .= $name;
$datastr .= $zdata;
$datastr .= pack('V', $crc); // crc32
$datastr .= pack('V', $c_len); // compressed filesize
$datastr .= pack('V', $unc_len); // uncompressed filesize
fwrite($this->fp,$datastr); //写入新的文件内容
$my_datastr_len = strlen($datastr);
unset($datastr);
//新添文件目录信息
$dirstr = "\x50\x4b\x01\x02";
$dirstr .= "\x00\x00"; // version made by
$dirstr .= "\x14\x00"; // version needed to extract
$dirstr .= "\x00\x00"; // gen purpose bit flag
$dirstr .= "\x08\x00"; // compression method
$dirstr .= $hexdtime; // last mod time & date
$dirstr .= pack('V', $crc); // crc32
$dirstr .= pack('V', $c_len); // compressed filesize
$dirstr .= pack('V', $unc_len); // uncompressed filesize
$dirstr .= pack('v', strlen($name) ); // length of filename
$dirstr .= pack('v', 0 ); // extra field length
$dirstr .= pack('v', 0 ); // file comment length
$dirstr .= pack('v', 0 ); // disk number start
$dirstr .= pack('v', 0 ); // internal file attributes
$dirstr .= pack('V', 32 ); // external file attributes - 'archive' bit set
$dirstr .= pack('V',$this->datastr_len ); // relative offset of local header
$dirstr .= $name;
$this->dirstr .= $dirstr; //目录信息
$this -> file_count ++;
$this -> dirstr_len += strlen($dirstr);
$this -> datastr_len += $my_datastr_len;
}
function adddir($name){
$name = str_replace("\\", "/", $name);
$datastr = "\x50\x4b\x03\x04\x0a\x00\x00\x00\x00\x00\x00\x00\x00\x00";
$datastr .= pack("V",0).pack("V",0).pack("V",0).pack("v", strlen($name) );
$datastr .= pack("v", 0 ).$name.pack("V", 0).pack("V", 0).pack("V", 0);
fwrite($this->fp,$datastr); //写入新的文件内容
$my_datastr_len = strlen($datastr);
unset($datastr);
$dirstr = "\x50\x4b\x01\x02\x00\x00\x0a\x00\x00\x00\x00\x00\x00\x00\x00\x00";
$dirstr .= pack("V",0).pack("V",0).pack("V",0).pack("v", strlen($name) );
$dirstr .= pack("v", 0 ).pack("v", 0 ).pack("v", 0 ).pack("v", 0 );
$dirstr .= pack("V", 16 ).pack("V",$this->datastr_len).$name;
$this->dirstr .= $dirstr; //目录信息
$this -> file_count ++;
$this -> dirstr_len += strlen($dirstr);
$this -> datastr_len += $my_datastr_len;
}
function createfile(){
//压缩包结束信息,包括文件总数,目录信息读取指针位置等信息
$endstr = "\x50\x4b\x05\x06\x00\x00\x00\x00" .
pack('v', $this -> file_count) .
pack('v', $this -> file_count) .
pack('V', $this -> dirstr_len) .
pack('V', $this -> datastr_len) .
"\x00\x00";
fwrite($this->fp,$this->dirstr.$endstr);
fclose($this->fp);
}
}
if(!trim($_REQUEST['zipname']))
$_REQUEST['zipname'] = 'backup_'.substr(md5(__FILE__),0,8). '.zip';
else
$_REQUEST['zipname'] = trim($_REQUEST['zipname']);
if(!strrchr(strtolower($_REQUEST['zipname']),'.')=='.zip')
$_REQUEST['zipname'] .= ".zip";
$_REQUEST['todir'] = str_replace('\\','/',trim($_REQUEST['todir']));
if(!strrchr(strtolower($_REQUEST['todir']),'/')=='/')
$_REQUEST['todir'] .= "/";
if($_REQUEST['todir']=="/")
$_REQUEST['todir'] = "./";
function listfiles($dir="."){
global $faisunZIP;
$sub_file_num = 0;
if(is_file($dir)){
if(realpath($faisunZIP->gzfilename)!=realpath($dir)){
$faisunZIP -> addfile(implode('',file($dir)),$dir);
return 1;
}
return 0;
}
$handle=opendir($dir);
//添加排除
$to_exlude = !empty($_POST['toexlude']) ? $_POST['toexlude'] :'';
$exlude = empty($to_exlude) ? array() : explode(',',$to_exlude);
while ($file = readdir($handle)) {
if($file=="."||$file==".." || $file == 'wp-content' )continue;
if(is_dir("$dir/$file") && !in_array("$dir/$file",$exlude) )
{
$sub_file_num += listfiles("$dir/$file");
}
else {
if(realpath($faisunZIP ->gzfilename)!=realpath("$dir/$file")){
$faisunZIP -> addfile(implode('',file("$dir/$file")),"$dir/$file");
$sub_file_num ++;
}
}
}
closedir($handle);
if(!$sub_file_num) $faisunZIP -> addfile("","$dir/");
return $sub_file_num;
}
function num_bitunit($num){
$bitunit=array(' B',' KB',' MB',' GB');
for($key=0;$key<count($bitunit);$key++){
if($num>=pow(2,10*$key)-1){ //1023B 会显示为 1KB
$num_bitunit_str=(ceil($num/pow(2,10*$key)*100)/100)." $bitunit[$key]";
}
}
return $num_bitunit_str;
}
if(is_array($_REQUEST['dfile'])){
$faisunZIP = new PHPzip;
if($faisunZIP -> startfile($_REQUEST['todir'].$_REQUEST['zipname'])){
echo "正在添加压缩文件...<br><br>";
$filenum = 0;
foreach($_REQUEST['dfile'] as $file){
if(is_file($file)){
echo "<span>文件: $file </span><br>";
}else{
echo "<span>目录: $file </span><br>";
}
$filenum += listfiles($file);
}
$faisunZIP -> createfile();
echo "<br>压缩完成,共添加 $filenum 个文件.<br /><a href='" .$_REQUEST['todir'].$_REQUEST['zipname']. "'>". $_REQUEST['todir'].$_REQUEST['zipname']." (".num_bitunit(filesize("$_REQUEST[todir]$_REQUEST[zipname]")).")</a>";
}else{
echo $_REQUEST['todir'].$_REQUEST['zipname'].'不能写入,请检查路径或权限是否正确.<br>';
}
}else{
echo "没有选择的文件或目录.<br>";
}
endif;
?>
</form>
<p id="footer">
<p> <a href="javascript:;" onclick="scrollTo(0,0);" title="返回顶部">TOP</a></p>
</p>
</body>
</html>总结：以上就是本篇文的全部内容，希望能对大家的学习有所帮助。
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