PHP打包下载整个文件夹或多文件

有时候需要输出服务器上某个文件夹的全部文件，比如备份网站，用下面的PHP函数来实现。 web开发  php

函数库代码PHPZip为：(请复制以下代码保存，以供调用）

  
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);  
  
        header('Content-Encoding: none');  
        header('Content-Type: application/zip');  
        header('Content-Disposition: attachment ; filename='.Str_Replace(".zip","",basename($zipfilename)).'.zip');  
        header('Pragma: no-cache');  
        header('Expires: 0');  
        print($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();  
  
        Switch ($Todo){  
        Case "1":  
            $this -> DownLoad(__FILE__,$zipfilename,$out);  
            Break;  
        Case "2":  
            $this -> SaveFile(__FILE__,$zipfilename,$out);  
            Break;  
        }  
    }  
  
    //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 !='.' and $file !='..'){  
                    IF(ereg('\.' ,$file.@basename())){  
                        $fd=fopen($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);  
    }  
  
    /* 
    解压缩部分 
    用途:解压缩文件 
    参数:$zn需要解压缩的zip文件及路径,$to解压缩的目的地 
    */  
    Function Unzip_File($zn, $to, $index = Array(-1)){  
        $ok = 0;  
        $zip = @fopen($zn, 'rb');  
        IF(!$zip){Return(-1);}  
        $cdir = $this -> ReadCentralDir($zip, $zn);  
        $pos_entry = $cdir['offset'];  
  
        IF(!is_array($index)){  
            $index = array($index);  
        }  
        For($i = 0; $index[$i];$i++){  
            IF(intval($index[$i])!= $index[$i] || $index[$i] > $cdir['entries']){Return(-1);}  
        }  
  
        For($i=0;$i<$cdir['entries'];$i++){  
            @fseek($zip, $pos_entry);  
            $header = $this -> ReadCentralFileHeaders($zip);  
            $header['index'] = $i;  
            $pos_entry = ftell($zip);  
            @rewind($zip);  
            fseek($zip, $header['offset']);  
            IF(in_array("-1", $index) || in_array($i, $index)){$stat[$header['filename']] = $this -> ExtractFile($header, $to, $zip);}  
        }  
        fclose($zip);  
        Return $stat;  
    }  
  
    //取得压缩包内的文件信息  
    Function get_List($zip_name){  
        $zip = @fopen($zip_name, 'rb');  
        IF(!$zip){Return(0);}  
        $centd = $this -> ReadCentralDir($zip, $zip_name);  
  
        @rewind($zip);  
        @fseek($zip, $centd['offset']);  
  
        For($i=0;$i<$centd['entries'];$i++){  
            $header = $this -> ReadCentralFileHeaders($zip);  
            $header['index'] = $i;  
            $info['filename'] = $header['filename'];  
            $info['stored_filename'] = $header['stored_filename'];  
            $info['size'] = $header['size'];  
            $info['compressed_size'] = $header['compressed_size'];  
            $info['crc'] = strtoupper(dechex($header['crc']));  
            $info['mtime'] = $header['mtime'];  
            $info['comment'] = $header['comment'];  
            $info['folder'] = ($header['external'] == 0x41FF0010 || $header['external'] == 16)?1:0;  
            $info['index'] = $header['index'];  
            $info['status'] = $header['status'];  
            $ret[] = $info;  
            unset($header);  
        }  
        Return $ret;  
    }  
  
    Function ReadFileHeader($zip){  
        $binary_data = fread($zip, 30);  
        $data = unpack('vchk/vid/vversion/vflag/vcompression/vmtime/vmdate/Vcrc/Vcompressed_size/Vsize/vfilename_len/vextra_len', $binary_data);  
  
        $header['filename'] = fread($zip, $data['filename_len']);  
        IF($data['extra_len'] != 0){$header['extra'] = fread($zip, $data['extra_len']);}Else{$header['extra'] = '';}  
  
        $header['compression'] = $data['compression'];  
        $header['size'] = $data['size'];  
        $header['compressed_size'] = $data['compressed_size'];  
        $header['crc'] = $data['crc'];  
        $header['flag'] = $data['flag'];  
        $header['mdate'] = $data['mdate'];  
        $header['mtime'] = $data['mtime'];  
  
        IF($header['mdate'] && $header['mtime']){  
            $hour = ($header['mtime']&0xF800) >> 11;  
            $minute = ($header['mtime']&0x07E0) >> 5;  
            $seconde = ($header['mtime']&0x001F) * 2;  
            $year = (($header['mdate']&0xFE00) >> 9) + 1980;  
            $month = ($header['mdate']&0x01E0) >> 5;  
            $day = $header['mdate']&0x001F;  
            $header['mtime'] = mktime($hour, $minute, $seconde, $month, $day, $year);  
        }Else{  
            $header['mtime'] = time();  
        }  
  
        $header['stored_filename'] = $header['filename'];  
        $header['status'] = "ok";  
        Return $header;  
    }  
  
    Function ReadCentralFileHeaders($zip){  
        $binary_data = fread($zip, 46);  
        $header = unpack('vchkid/vid/vversion/vversion_extracted/vflag/vcompression/vmtime/vmdate/Vcrc/Vcompressed_size/Vsize/vfilename_len/vextra_len/vcomment_len/vdisk/vinternal/Vexternal/Voffset', $binary_data);  
  
        IF($header['filename_len'] != 0)  
            $header['filename'] = fread($zip, $header['filename_len']);  
        Else $header['filename'] = '';  
  
        IF($header['extra_len'] != 0)  
            $header['extra'] = fread($zip, $header['extra_len']);  
        Else $header['extra'] = '';  
  
        IF($header['comment_len'] != 0)  
            $header['comment'] = fread($zip, $header['comment_len']);  
        Else $header['comment'] = '';  
  
        IF($header['mdate'] && $header['mtime']){  
            $hour = ($header['mtime'] &0xF800) >> 11;  
            $minute = ($header['mtime'] &0x07E0) >> 5;  
            $seconde = ($header['mtime'] &0x001F) * 2;  
            $year = (($header['mdate'] &0xFE00) >> 9) + 1980;  
            $month = ($header['mdate'] &0x01E0) >> 5;  
            $day = $header['mdate'] &0x001F;  
            $header['mtime'] = mktime($hour, $minute, $seconde, $month, $day, $year);  
        }Else{  
            $header['mtime'] = time();  
        }  
        $header['stored_filename'] = $header['filename'];  
        $header['status'] = 'ok';  
        IF(substr($header['filename'], -1) == '/')  
            $header['external'] = 0x41FF0010;  
        Return $header;  
    }  
  
    Function ReadCentralDir($zip, $zip_name){  
        $size = filesize($zip_name);  
        IF($size < 277){$maximum_size = $size;}Else{$maximum_size = 277;}  
  
        @fseek($zip, $size - $maximum_size);  
        $pos = ftell($zip);  
        $bytes = 0x00000000;  
  
        While($pos < $size){  
            $byte = @fread($zip, 1);  
            $bytes = ($bytes << 8) | Ord($byte);  
            IF($bytes == 0x504b0506){  
                $pos++;  
                break;  
            }  
            $pos++;  
        }  
  
        $data = unpack('vdisk/vdisk_start/vdisk_entries/ventries/Vsize/Voffset/vcomment_size', fread($zip, 18));  
  
        IF($data['comment_size'] != 0){$centd['comment'] = fread($zip, $data['comment_size']);}Else{$centd['comment'] = '';}  
        $centd['entries'] = $data['entries'];  
        $centd['disk_entries'] = $data['disk_entries'];  
        $centd['offset'] = $data['offset'];  
        $centd['disk_start'] = $data['disk_start'];  
        $centd['size'] = $data['size'];  
        $centd['disk'] = $data['disk'];  
        Return $centd;  
    }  
  
    Function ExtractFile($header, $to, $zip){  
        $header = $this -> readfileheader($zip);  
  
        IF(substr($to, -1) != "/") $to .= "/";  
        IF(!@is_dir($to)) @mkdir($to, 0777);  
  
        $pth = explode("/", dirname($header['filename']));  
        For($i = 0;isset($pth[$i]);$i++){  
            IF(!$pth[$i]) continue;  
            $pthss .= $pth[$i] . "/";  
            IF(!is_dir($to . $pthss)) @mkdir($to . $pthss, 0777);  
        }  
        IF(!($header['external'] == 0x41FF0010) && !($header['external'] == 16)){  
            IF($header['compression'] == 0){  
                $fp = @fopen($to . $header['filename'], 'wb');  
                IF(!$fp) Return(-1);  
                $size = $header['compressed_size'];  
  
                While($size != 0){  
                    $read_size = ($size < 2048 ? $size : 2048);  
                    $buffer = fread($zip, $read_size);  
                    $binary_data = pack('a' . $read_size, $buffer);  
                    @fwrite($fp, $binary_data, $read_size);  
                    $size -= $read_size;  
                }  
                fclose($fp);  
                touch($to . $header['filename'], $header['mtime']);  
            }Else{  
                $fp = @fopen($to . $header['filename'] . '.gz', 'wb');  
                IF(!$fp) Return(-1);  
                $binary_data = pack('va1a1Va1a1', 0x8b1f, Chr($header['compression']),  
                    Chr(0x00), time(), Chr(0x00), Chr(3));  
  
                fwrite($fp, $binary_data, 10);  
                $size = $header['compressed_size'];  
  
                While($size != 0){  
                    $read_size = ($size < 1024 ? $size : 1024);  
                    $buffer = fread($zip, $read_size);  
                    $binary_data = pack('a' . $read_size, $buffer);  
                    @fwrite($fp, $binary_data, $read_size);  
                    $size -= $read_size;  
                }  
  
                $binary_data = pack('VV', $header['crc'], $header['size']);  
                fwrite($fp, $binary_data, 8);  
                fclose($fp);  
  
                $gzp = @gzopen($to . $header['filename'] . '.gz', 'rb') or die("Cette archive est compress閑");  
                IF(!$gzp) Return(-2);  
                $fp = @fopen($to . $header['filename'], 'wb');  
                IF(!$fp) Return(-1);  
                $size = $header['size'];  
  
                While($size != 0){  
                    $read_size = ($size < 2048 ? $size : 2048);  
                    $buffer = gzread($gzp, $read_size);  
                    $binary_data = pack('a' . $read_size, $buffer);  
                    @fwrite($fp, $binary_data, $read_size);  
                    $size -= $read_size;  
                }  
                fclose($fp);  
                gzclose($gzp);  
  
                touch($to . $header['filename'], $header['mtime']);  
                @unlink($to . $header['filename'] . '.gz');  
            }  
        }  
        Return true;  
    }  
}  
?>

使用方法：

函数:文件压缩
压缩参数:需要压缩的文件或文件夹(文件可为数组),压缩后的zip文件名及存放路径,压缩类型1:文件夹2:文件,后续操作1:压缩后下载;2:存放在服务器上(默认为/@Upload下)
压缩文件夹示例:Tozip("./","../".date("d-H-i-s").".zip",1,2);
压缩文件示例:
$aaa=array("../1.txt","../2.txt");
Tozip($aaa,"../2.zip",2);

用法举例：
比如有这样一段文件结构：
home
--upload
----1.jpg
----2.jpg
----3.jpg
--web
----html
------inc
--------zip.php(这是上面的代码库）
------download.php

使用download.php中的代码，实现upload文件夹打包并自动下载：

php  
  
Function Tozip($Path,$ZipFile,$Typ=1,$Todo=1){  
    //IF(!is_writeable($Path)){Exit("文件夹不可写!");}  
    $Path=Str_iReplace("\\","/",($Path)); 
    IF(Is_Null($Path) Or Empty($Path) Or !IsSet($Path)){Return False;} 
    IF(Is_Null($ZipFile) Or Empty($ZipFile) Or !IsSet($ZipFile)){Return False;} 
 
    Include_once("inc/zip.php"); // 载入代码库，注意路径 
    $zip = New PHPZip; 
    IF(SubStr($Path,-1,1)=="/"){$Path=SubStr($Path,0,StrLen($Path)-1);} 
 
    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)  
文章来源：http://ju.outofmemory.cn/entry/65761