php在线压缩zip文件的方法

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>

<title>php ZIP压缩程序</title>

<!–

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>

<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>

if(!isset($_REQUEST[“myaction”])):

<tr>

</tr>

<tr>

</tr>

</table>

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:

(留空为本目录,必须有写入权限)<br>

压缩文件名称:

(.zip)<br>

<br>

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 = “x50x4bx03x04”;

$datastr .= “x14x00”; // ver needed to extract

$datastr .= “x00x00”; // gen purpose bit flag

$datastr .= “x08x00”; // 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 = “x50x4bx01x02”;

$dirstr .= “x00x00”; // version made by

$dirstr .= “x14x00”; // version needed to extract

$dirstr .= “x00x00”; // gen purpose bit flag

$dirstr .= “x08x00”; // 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 = “x50x4bx03x04x0ax00x00x00x00x00x00x00x00x00”;

$datastr .= pack(“V”,0).pack(“V”,0).pack(“V”,0).pack(“v”, strlen($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 = “x50x4bx01x02x00x00x0ax00x00x00x00x00x00x00x00x00”;

$dirstr .= pack(“V”,0).pack(“V”,0).pack(“V”,0).pack(“v”, strlen($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 = “x50x4bx05x06x00x00x00x00” .

pack(‘v’, $this -> file_count) .

pack(‘V’, $this -> dirstr_len) .

pack(‘V’, $this -> datastr_len) .

“x00x00”;

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>

</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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