PHP:将文件解压成ZIP并且下载到本地

这个功能实现起来并不难，首先我们要找到这个文件的路径。然后在引入第三方类PHPZip这个可以在网上搜到，一会我会把他贴出来。有需要的小伙伴可以借鉴一下。

$name =  $_SERVER['DOCUMENT_ROOT'] . '/Uploads/' . $folderName;               $this->tozip($dir,"$name" ,1,1);

    //文件转成ｚｉｐ　格式    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;        }//         vendor("zip");//        echo $SERVER['DOCUMENT_ROOT']."/zip.php";        Include_once($SERVER['DOCUMENT_ROOT']."/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; } }

PHPZip zip.php文件如下：

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,'/'.$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'] > 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;$i ReadCentralFileHeaders($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;$i ReadCentralFileHeaders($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($size  readfileheader($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