PHP打包下载整个文件夹或多文件

柔光的暖阳◎ 2022-06-07 06:24 804阅读 0赞

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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][web]  [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

[web]: http://ju.outofmemory.cn/tag/web%E5%BC%80%E5%8F%91/
[php]: http://ju.outofmemory.cn/tag/php/