php实现zip压缩文件

zip.php
```php
<?
    Class PHPZip{
        Private $StrPath="../UpLoad";
        Private $datasec=array();
        Private $ctrl_dir=array();
        Private $eof_ctrl_dir="\x50\x4b\x05\x06\x00\x00\x00\x00";
        Private $old_offset=0;

//压缩后下载
        function DownLoad($curdir,$zipfilename,$out) {
            $zipfilename = strtolower($zipfilename);
            $curdir = str_ireplace(basename($curdir),"",$curdir);
            chdir($curdir.$this->StrPath);
			//ob_start($out);
            header('Content-Encoding: none');
            header('Content-Type: application/zip');
            header('Content-Disposition: attachment ; filename='.Str_Replace(".zip","",basename($zipfilename)).'.zip');
            header('Pragma: no-cache');
            header('Expires: 0');
			//ob_flush($out);
            print($out);
        }

//压缩后保存在服务器,默认在/@Upload下
        function SaveFile($curdir,$zipfilename,$out) {
            $curdir = str_ireplace(basename($curdir),"",$curdir);
            chdir($curdir.$this->StrPath);
            $fp = fopen($zipfilename,"wb");
            fwrite($fp,$out,strlen($out));
            fclose($fp);
        }

//函数用途:压缩文件夹,递归逐层进行
        //参数详解:$dir需要压缩的目录,$zipfilename压缩后的文件名及存放路径,$Todo处理方式1提供下载2保存文件在服务器
        function ZipDir($dir,$zipfilename,$Todo) {
            if(!@function_exists('gzcompress')) {
				return 0;
			}
            @set_time_limit("0");
            $this->openFile($dir,$zipfilename);
            $out = $this -> filezip();

Switch ($Todo) {
            Case "1":
                $this -> DownLoad(__FILE__,$zipfilename,$out);
                Break;
            Case "2":
                $this -> SaveFile(__FILE__,$zipfilename,$out);
                Break;
            }
        }

//函数用途:压缩文件,可以是单个也可以是数组的多个
        //参数详解:$file需要压缩的文件(可为数组),$zipfilename压缩后的文件名及存放路径,$Todo处理方式1提供下载2保存文件在服务器
        function ZipFile($file,$zipfilename,$Todo) {
            if(!@function_exists('gzcompress')) {
				return 0;
			}
            if(is_array($file)){
                foreach($file as $filename) {
                    if(is_file($filename)) {
                        $fd = fopen ($filename, "rb");
                        $content = @fread($fd, filesize ($filename));
                        fclose ($fd);

$filename = basename($filename);
                        $this -> addFile($content, $filename);
                    }
                }
            } else {
                if(is_file($file)) {
                    $fd = fopen ($file, "rb");
                    $content = @fread($fd, filesize($file));
                    fclose ($fd);
                    $file = basename($file);
                    $this -> addFile($content, $file);
                }
            }
            $out= $this -> filezip();

//递归取得下层文件夹下的文件
        function openFile($path,$zipName){
            $temp_path = $path;
            $temp_zip_path = $zipName;
            if($handle = @opendir($path)){
                While(false !== ($file=readdir($handle))) {
                    if($file !='.' && $file !='..') {
                        if(is_file($file)) {
                            $fd = fopen($path.'/'.$file,"r");
                            $fileValue = @fread($fd,1024000);
                            fclose ($fd);
                            $this -> addFile($fileValue,$path.'/'.$file);
                        } else {
                            $this ->openFile($path.'/'.$file,$zipName.'/'.$file);
                        }
                    }
                }
            $zipName = $temp_zip_path;
            $path = $temp_path;
            closedir($handle);
            }
        }

function addFile($data,$name,$time=0){
            $name = str_replace('\\','/',$name);
            $name = str_replace('./','',str_replace('../','',$name));
            $dtime = dechex($this->unix2DosTime($time));
            $hexdtime = '\x'.$dtime[6].$dtime[7].'\x'.$dtime[4].$dtime[5].'\x'.$dtime[2].$dtime[3].'\x'.$dtime[0].$dtime[1];
            Eval('$hexdtime="'.$hexdtime.'";');

$fr = "\x50\x4b\x03\x04";
            $fr .= "\x14\x00";
            $fr .= "\x00\x00";
            $fr .= "\x08\x00";
            $fr .= $hexdtime;

$unc_len = strlen($data);
            $crc = crc32($data);
            $zdata = gzcompress($data);
            $c_len = strlen($zdata);
            $zdata = substr(substr($zdata,0,strlen($zdata) - 4),2);
            $fr .= pack('V',$crc);
            $fr .= pack('V',$c_len);
            $fr .= pack('V',$unc_len);
            $fr .= pack('v',strlen($name));
            $fr .= pack('v',0);
            $fr .= $name;
            $fr .= $zdata;
            $fr .= pack('V',$crc);
            $fr .= pack('V',$c_len);
            $fr .= pack('V',$unc_len);

$this -> datasec[]=$fr;
            $new_offset = strlen(implode('',$this->datasec));

$cdrec = "\x50\x4b\x01\x02";
            $cdrec .= "\x00\x00";
            $cdrec .= "\x14\x00";
            $cdrec .= "\x00\x00";
            $cdrec .= "\x08\x00";
            $cdrec .= $hexdtime;
            $cdrec .= pack('V',$crc);
            $cdrec .= pack('V',$c_len);
            $cdrec .= pack('V',$unc_len);
            $cdrec .= pack('v',strlen($name) );
            $cdrec .= pack('v',0 );
            $cdrec .= pack('v',0 );
            $cdrec .= pack('v',0 );
            $cdrec .= pack('v',0 );
            $cdrec .= pack('V',32 );
            $cdrec .= pack('V',$this -> old_offset );
            $this -> old_offset = $new_offset;
            $cdrec .= $name;
            $this -> ctrl_dir[] = $cdrec;
        }

function filezip(){
            $data = implode('',$this -> datasec);
            $ctrldir = implode('',$this -> ctrl_dir);

return
            $data.$ctrldir.$this -> eof_ctrl_dir .
            pack('v',sizeof($this -> ctrl_dir)) .
            pack('v',sizeof($this -> ctrl_dir)) .
            pack('V',strlen($ctrldir)) .
            pack('V',strlen($data))."\x00\x00";
        }

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);
        }
    }
?>
```

index.php
```php
<?php
function Tozip($Path,$ZipFile,$Typ=1,$Todo=1){
	//if(!is_writeable($Path)){Exit("文件夹不可写!");}
	$Path = trim($Path,'/');
	$Path = str_ireplace("\\","/",($Path));

if(empty($Path)) {
		return false;
	}
	if(empty($ZipFile)) {
		return false;
	}

include_once("./zip.php"); // 载入代码库，注意路径

$zip = New PHPZip;

ob_end_clean();

switch ($Typ){
		case "1":
		$zip->ZipDir($Path,$ZipFile,$Todo);
		Break;
		case "2":
		$zip->ZipFile($Path,$ZipFile,$Todo);
		Break;
	}

if($Todo==1) {
		die();
	} else {
		return true;
	}
}

Tozip("../upload", "../upload.zip",1,1);

```

Search result.

使用PHP生成二维码

csrf token 验证