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php版zip文件解压工具

发布者:站点默认
2011/03/5 浏览数(1,542) 分类:工作 php版zip文件解压工具已关闭评论

说明:

做WEB时用FTP上传零碎的文件会比较费时间,但上传打包后的单个文件会很快,在上传之后可以使用此程序将zip文件解压。代码参考了纯粹空间的“faisun_unzip -在线解压ZIP文件程序 V1.0”,略有修改。

用法:

第一步:制作zip.php文件。

<?php
include('zip.class.php');
if (empty($_GET['f'])){
	echo 'Usage: ?f=file.zip&d=directory';
}else{
	$file = $_GET['f'];
	$directory = $_GET['d']; // zip.class.php会处理这块数据
	if(preg_match('/\.zip$/mis',$file)){
		$z = new zip();
		$result=$z->extract($file,$directory);
		if($result==-1){
			echo "<br>File: [$file] error.";
		}
		echo "<br>Done. Folders: $z->totalFolders , Files: $z->totalFiles .";
	}else{
		echo "<br>Wrong file format.";			
	}
}
?>

第二步:上传后解压。

http://domain/zip.php?f=archive.zip&d=web
#参数“f”是上传的包,“d”是解压到的目录(同级目录)。

下载:

zip.class.php.tar.gz

代码:

<?php
class zip {
	public $totalFiles = 0;
	public $totalFolders = 0;
	
	function extract ($zn, $to = './', $index = Array(-1)) {
		$ok = 0;
		$zip = @fopen($zn, 'rb');
		if(!$zip) return(-1);
		$cdir = $this->readCentralDir($zip, $zn);
		$posEntry = $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, $posEntry);
			$header = $this->readCentralFileHeaders($zip);
			$header['index'] = $i;
			$posEntry = ftell($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;
		}
	
	function readFileHeader($zip) {
		$binaryData = fread($zip, 30);
		$data = unpack('vchk/vid/vversion/vflag/vcompression/vmtime/vmdate/Vcrc/Vcompressed_size/Vsize/vfilename_len/vextra_len', $binaryData);
		
		$header['filename'] = fread($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){
		$binaryData = fread($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', $binaryData);
		
		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 or $bytes == 0x2e706870504b0506){
				$pos++;
				break;
			}
			$pos++;
		}
		
		$fdata = fread($zip, 18);
		
		$data = @unpack('vdisk/vdisk_start/vdisk_entries/ventries/Vsize/Voffset/vcomment_size', $fdata);
		
		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);
		# 创建目录
		if (!file_exists($to)){
			@mkdir($to);
		}else if(file_exists($to) && !is_dir($to)){
			@rename($to, $to . '_bak_by_zip');
			@mkdir($to);
		}
		if(substr($to, -1) != "/") $to .= "/";
		if($to == './') $to = '';
		$pth = explode("/", $to . $header['filename']);
		$mydir = '';
		for($i = 0;$i < count($pth)-1;$i++){
			if(!$pth[$i]) continue;
			$mydir .= $pth[$i] . "/";
			if((!is_dir($mydir) && @mkdir($mydir, 0777)) || (($mydir == $to . $header['filename'] || ($mydir == $to && $this->totalFolders == 0)) && is_dir($mydir))){
				@chmod($mydir, 0777);
				$this->totalFolders ++;
				echo "[d] <a href='$mydir' target='_blank'>$mydir</a><br>";
			}
		}
		
		if(strrchr($header['filename'], '/') == '/') return;
		
		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){
					$readSize = ($size < 2048 ? $size : 2048);
					$buffer = fread($zip, $readSize);
					$binaryData = pack('a' . $readSize, $buffer);
					@fwrite($fp, $binaryData, $readSize);
					$size -= $readSize;
				}
				fclose($fp);
				touch($to . $header['filename'], $header['mtime']);
				}else{
				$fp = @fopen($to . $header['filename'] . '.gz', 'wb');
				if(!$fp) return(-1);
				$binaryData = pack('va1a1Va1a1', 0x8b1f, Chr($header['compression']),
					Chr(0x00), time(), Chr(0x00), Chr(3));
				
				fwrite($fp, $binaryData, 10);
				$size = $header['compressed_size'];
				
				while ($size != 0){
					$readSize = ($size < 1024 ? $size : 1024);
					$buffer = fread($zip, $readSize);
					$binaryData = pack('a' . $readSize, $buffer);
					@fwrite($fp, $binaryData, $readSize);
					$size -= $readSize;
				}
				
				$binaryData = pack('VV', $header['crc'], $header['size']);
				fwrite($fp, $binaryData, 8);
				fclose($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){
					$readSize = ($size < 2048 ? $size : 2048);
					$buffer = gzread($gzp, $readSize);
					$binaryData = pack('a' . $readSize, $buffer);
					@fwrite($fp, $binaryData, $readSize);
					$size -= $readSize;
				}
				fclose($fp);
				gzclose($gzp);
				
				touch($to . $header['filename'], $header['mtime']);
				@unlink($to . $header['filename'] . '.gz');
				
			}
		}
		
		$this->totalFiles ++;
		echo "[-] <a href='$to$header[filename]' target='_blank'>$to$header[filename]</a><br>";
		
		return true;
	}
}
?>

<完>

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