php生成压缩zip文件的类

08-2012

php生成压缩zip文件的类

地狱中仰望天堂
2012-08-23
博采众长,我爱PHP
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这一天无事，我看论坛有人问了php生成压缩文件的问题，记得以前做项目，我们做的项目中就有一个将整个程序打包成zip的功能，但是这个功能不是我写的，那个时候因为忙也是简单的看了一下，现在有时间，又遇到了这个问题，于是就又仔细的看了下。把这个类拿出来，大家分享一下。

phpZip.class.php

set_time_limit(0);
class PhpZip {
	var $file_count = 0 ;
	var $datastr_len = 0;
	var $dirstr_len = 0;
	var $filedata = ''; //该变量只被类外部程序访问
	var $gzfilename;
	var $fp;
	var $dirstr='';
	var $filefilters = array();

	function SetFileFilter($filetype)
	{
		$this->filefilters = explode('|',$filetype);
	}
	//返回文件的修改时间格式.
	//只为本类内部函数调用.
	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) | ($timearray['seconds'] >> 1);
	}
	//初始化文件,建立文件目录,
	//并返回文件的写入权限.
	function startfile($path = 'dodo.zip'){

		$this->gzfilename=$path;
		$mypathdir=array();
		do {
			$mypathdir[] = $path = dirname($path);
		} while($path != '.');
		@end($mypathdir);
		do {
			$path = @current($mypathdir);
			@mkdir($path);
		} while(@prev($mypathdir)); 

		if($this->fp=@fopen($this->gzfilename,"w")){
			return true;
		}
		return false;
	} 

	//添加一个文件到 zip 压缩包中.
	function addfile($data, $name) {
		$name = str_replace('\\', '/', $name);
		if(strrchr($name,'/')=='/')
		return $this->adddir($name);
		if(!empty($this->filefilters))
		{
		if (!in_array(end(explode(".",$name)), $this->filefilters))
		{
		return;
		}
		}
		$dtime = dechex($this->unix2DosTime());
		$hexdtime = '\x' . $dtime[6] . $dtime[7] . '\x' . $dtime[4] . $dtime[5] . '\x' . $dtime[2] . $dtime[3] . '\x' . $dtime[0] . $dtime[1];
		eval('$hexdtime = "' . $hexdtime . '";');
		$unc_len = strlen($data);
		$crc = crc32($data);
		$zdata = gzcompress($data);
		$c_len = strlen($zdata);
		$zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2);
		//新添文件内容格式化:
		$datastr = "\x50\x4b\x03\x04";
		$datastr .= "\x14\x00"; // ver needed to extract
		$datastr .= "\x00\x00"; // gen purpose bit flag
		$datastr .= "\x08\x00"; // compression method
		$datastr .= $hexdtime; // last mod time and date
		$datastr .= pack('V', $crc); // crc32
		$datastr .= pack('V', $c_len); // compressed filesize
		$datastr .= pack('V', $unc_len); // uncompressed filesize
		$datastr .= pack('v', strlen($name)); // length of filename
		$datastr .= pack('v', 0); // extra field length
		$datastr .= $name;
		$datastr .= $zdata;
		$datastr .= pack('V', $crc); // crc32
		$datastr .= pack('V', $c_len); // compressed filesize
		$datastr .= pack('V', $unc_len); // uncompressed filesize
		fwrite($this->fp,$datastr); //写入新的文件内容
		$my_datastr_len = strlen($datastr);
		unset($datastr);
		//新添文件目录信息
		$dirstr = "\x50\x4b\x01\x02";
		$dirstr .= "\x00\x00"; // version made by
		$dirstr .= "\x14\x00"; // version needed to extract
		$dirstr .= "\x00\x00"; // gen purpose bit flag
		$dirstr .= "\x08\x00"; // compression method
		$dirstr .= $hexdtime; // last mod time & date
		$dirstr .= pack('V', $crc); // crc32
		$dirstr .= pack('V', $c_len); // compressed filesize
		$dirstr .= pack('V', $unc_len); // uncompressed filesize
		$dirstr .= pack('v', strlen($name) ); // length of filename
		$dirstr .= pack('v', 0 ); // extra field length
		$dirstr .= pack('v', 0 ); // file comment length
		$dirstr .= pack('v', 0 ); // disk number start
		$dirstr .= pack('v', 0 ); // internal file attributes
		$dirstr .= pack('V', 32 ); // external file attributes - 'archive' bit set
		$dirstr .= pack('V',$this->datastr_len ); // relative offset of local header
		$dirstr .= $name;
		$this->dirstr .= $dirstr; //目录信息
		$this -> file_count ++;
		$this -> dirstr_len += strlen($dirstr);
		$this -> datastr_len += $my_datastr_len;
	} 

	function adddir($name)
	{
	$name = str_replace("\\", "/", $name);
	$datastr = "\x50\x4b\x03\x04\x0a\x00\x00\x00\x00\x00\x00\x00\x00\x00";
	$datastr .= pack("V",0).pack("V",0).pack("V",0).pack("v", strlen($name) );
	$datastr .= pack("v", 0 ).$name.pack("V", 0).pack("V", 0).pack("V", 0);
	fwrite($this->fp,$datastr); //写入新的文件内容
	$my_datastr_len = strlen($datastr);
	unset($datastr);
	$dirstr = "\x50\x4b\x01\x02\x00\x00\x0a\x00\x00\x00\x00\x00\x00\x00\x00\x00";
	$dirstr .= pack("V",0).pack("V",0).pack("V",0).pack("v", strlen($name) );
	$dirstr .= pack("v", 0 ).pack("v", 0 ).pack("v", 0 ).pack("v", 0 );
	$dirstr .= pack("V", 16 ).pack("V",$this->datastr_len).$name;
	$this->dirstr .= $dirstr; //目录信息
	$this -> file_count ++;
	$this -> dirstr_len += strlen($dirstr);
	$this -> datastr_len += $my_datastr_len;
	} 

	function createfile()
	{
	//压缩包结束信息,包括文件总数,目录信息读取指针位置等信息
	$endstr = "\x50\x4b\x05\x06\x00\x00\x00\x00" .
	pack('v', $this -> file_count) .
	pack('v', $this -> file_count) .
	pack('V', $this -> dirstr_len) .
	pack('V', $this -> datastr_len) .
	"\x00\x00";
	fwrite($this->fp,$this->dirstr.$endstr);
	fclose($this->fp);
	}
}

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set_time_limit(0);

class PhpZip {

var $file_count = 0 ;

var $datastr_len = 0;

var $dirstr_len = 0;

var $filedata = ''; //该变量只被类外部程序访问

var $gzfilename;

var $fp;

var $dirstr='';

var $filefilters = array();

function SetFileFilter($filetype)

{

$this->filefilters = explode('|',$filetype);

}

//返回文件的修改时间格式.

//只为本类内部函数调用.

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;

}

}

//初始化文件,建立文件目录,

//并返回文件的写入权限.

function startfile($path = 'dodo.zip'){

$this->gzfilename=$path;

$mypathdir=array();

do {

$mypathdir[] = $path = dirname($path);

} while($path != '.');

@end($mypathdir);

do {

$path = @current($mypathdir);

@mkdir($path);

} while(@prev($mypathdir));

if($this->fp=@fopen($this->gzfilename,"w")){

return true;

}

return false;

}

//添加一个文件到 zip 压缩包中.

function addfile($data, $name) {

$name = str_replace('\\', '/', $name);

if(strrchr($name,'/')=='/')

return $this->adddir($name);

if(!empty($this->filefilters))

{

if (!in_array(end(explode(".",$name)), $this->filefilters))

{

return;

}

$dtime = dechex($this->unix2DosTime());

$hexdtime = '\x' . $dtime[6] . $dtime[7] . '\x' . $dtime[4] . $dtime[5] . '\x' . $dtime[2] . $dtime[3] . '\x' . $dtime[0] . $dtime[1];

eval('$hexdtime = "' . $hexdtime . '";');

$unc_len = strlen($data);

$crc = crc32($data);

$zdata = gzcompress($data);

$c_len = strlen($zdata);

$zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2);

//新添文件内容格式化:

$datastr = "\x50\x4b\x03\x04";

$datastr .= "\x14\x00"; // ver needed to extract

$datastr .= "\x00\x00"; // gen purpose bit flag

$datastr .= "\x08\x00"; // compression method

$datastr .= $hexdtime; // last mod time and date

$datastr .= pack('V', $crc); // crc32

$datastr .= pack('V', $c_len); // compressed filesize

$datastr .= pack('V', $unc_len); // uncompressed filesize

$datastr .= pack('v', strlen($name)); // length of filename

$datastr .= pack('v', 0); // extra field length

$datastr .= $name;

$datastr .= $zdata;

$datastr .= pack('V', $crc); // crc32

$datastr .= pack('V', $c_len); // compressed filesize

$datastr .= pack('V', $unc_len); // uncompressed filesize

fwrite($this->fp,$datastr); //写入新的文件内容

$my_datastr_len = strlen($datastr);

unset($datastr);

//新添文件目录信息

$dirstr = "\x50\x4b\x01\x02";

$dirstr .= "\x00\x00"; // version made by

$dirstr .= "\x14\x00"; // version needed to extract

$dirstr .= "\x00\x00"; // gen purpose bit flag

$dirstr .= "\x08\x00"; // compression method

$dirstr .= $hexdtime; // last mod time & date

$dirstr .= pack('V', $crc); // crc32

$dirstr .= pack('V', $c_len); // compressed filesize

$dirstr .= pack('V', $unc_len); // uncompressed filesize

$dirstr .= pack('v', strlen($name) ); // length of filename

$dirstr .= pack('v', 0 ); // extra field length

$dirstr .= pack('v', 0 ); // file comment length

$dirstr .= pack('v', 0 ); // disk number start

$dirstr .= pack('v', 0 ); // internal file attributes

$dirstr .= pack('V', 32 ); // external file attributes - 'archive' bit set

$dirstr .= pack('V',$this->datastr_len ); // relative offset of local header

$dirstr .= $name;

$this->dirstr .= $dirstr; //目录信息

$this -> file_count ++;

$this -> dirstr_len += strlen($dirstr);

$this -> datastr_len += $my_datastr_len;

}

function adddir($name)

{

$name = str_replace("\\", "/", $name);

$datastr = "\x50\x4b\x03\x04\x0a\x00\x00\x00\x00\x00\x00\x00\x00\x00";

$datastr .= pack("V",0).pack("V",0).pack("V",0).pack("v", strlen($name) );

$datastr .= pack("v", 0 ).$name.pack("V", 0).pack("V", 0).pack("V", 0);

fwrite($this->fp,$datastr); //写入新的文件内容

$my_datastr_len = strlen($datastr);

unset($datastr);

$dirstr = "\x50\x4b\x01\x02\x00\x00\x0a\x00\x00\x00\x00\x00\x00\x00\x00\x00";

$dirstr .= pack("V",0).pack("V",0).pack("V",0).pack("v", strlen($name) );

$dirstr .= pack("v", 0 ).pack("v", 0 ).pack("v", 0 ).pack("v", 0 );

$dirstr .= pack("V", 16 ).pack("V",$this->datastr_len).$name;

$this->dirstr .= $dirstr; //目录信息

$this -> file_count ++;

$this -> dirstr_len += strlen($dirstr);

$this -> datastr_len += $my_datastr_len;

}

function createfile()

{

//压缩包结束信息,包括文件总数,目录信息读取指针位置等信息

$endstr = "\x50\x4b\x05\x06\x00\x00\x00\x00" .

pack('v', $this -> file_count) .

pack('V', $this -> dirstr_len) .

pack('V', $this -> datastr_len) .

"\x00\x00";

fwrite($this->fp,$this->dirstr.$endstr);

fclose($this->fp);

}

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php生成压缩zip文件的类

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