本文实例介绍了PHP打包网站并在线压缩为zip的方法，分享给大家供大家参考，具体内容如下

PHP;"> <a href="https://www.jb51.cc/tag/PHP/" target="_blank" class="keywords">PHP</a> ZIP压缩程序

文件程序

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。
PHP if(isset($_REQUEST['pwd']) && md5($_REQUEST['pwd']) == $password) echo '当前目录：'. dirname(__FILE__) . ''; else if(isset($_GET['pwd']) ) echo '密码值：'. md5($_GET['pwd']) . ''; else echo 'Tips:在URL后参加?pwd=密码查看生成密码.'; ?>

elseif($_REQUEST["myaction"]=="dolist"):

if(!isset($_REQUEST['pwd']) || empty($_REQUEST['pwd']) )
die('请输入密码! <a href="'. $_SERVER['PHP_SELF']. '">Again');
if(md5($_REQUEST['pwd']) != $password)
die('输入的密码不正确！<a href="'. $_SERVER['PHP_SELF']. '">Again');
echo '选择要排除的目录(相对路径，以英文半角逗号分隔):
';
echo '
';
echo "选择要压缩的文件或目录：
";
$fdir = opendir('./');
while($file=readdir($fdir)){
if($file=='.'|| $file=='..' ) continue;
echo "<input name='dfile[]' type='checkbox' value='$file' ".($file==basename(FILE)?"":"checked")."> ";
if(is_file($file)){
echo "文件: $file
";
}else{
echo "目录: $file
";
}
}
?>

压缩文件保存到目录:
<input name="todir" type="text" id="todir" value="zipfiles<?php echo substr(md5(time()),8);?>" size="20">
(留空为本目录,必须有写入权限)

压缩文件名称:
<input name="zipname" type="text" id="zipname" value="backup_<?php echo substr(md5(FILE),8);?>.zip" size="15">
(.zip)

<input name="pwd" type="hidden" id="password" value="<?php echo $_POST['pwd'];?>">
<input name="myaction" type="hidden" id="myaction" value="dozip">

function selrev() { with(document.getElementById('myform')){ for(i=0;i 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,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";

$datastr .= pack("V",0).pack("V",0).pack("v",strlen($name) );
$datastr .= pack("v",0 ).$name.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";
$dirstr .= pack("V",strlen($name) );
$dirstr .= 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),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;

}

if(is_array($_REQUEST['dfile'])){
$faisunZIP = new PHPzip;
if($faisunZIP -> startfile($_REQUEST['todir'].$_REQUEST['zipname'])){
echo "正在添加压缩文件...

";
$filenum = 0;
foreach($_REQUEST['dfile'] as $file){
if(is_file($file)){
echo "文件: $file
";
}else{
echo "目录: $file
";
}
$filenum += listfiles($file);
}
$faisunZIP -> createfile();
echo "
压缩完成,共添加 $filenum 个文件.
<a href='" .$_REQUEST['todir'].$_REQUEST['zipname']. "'>". $_REQUEST['todir'].$_REQUEST['zipname']." (".num_bitunit(filesize("$_REQUEST[todir]$_REQUEST[zipname]")).")";
}else{
echo $_REQUEST['todir'].$_REQUEST['zipname'].'不能写入,请检查路径或权限是否正确.
';
}
}else{
echo "没有选择的文件或目录.
";
}