<?php
class PHPZip
{
/**********************************************************
* 解压部分
**********************************************************/
// ------------------------------------------------------ //
// ReadCentralDir($zip, $zipfile)
// $zip是经过@fopen($zipfile, 'rb')打开的
// $zipfile是zip文件的路径
// ------------------------------------------------------ //
private function ReadCentralDir($zip, $zipfile)
{
$size = filesize($zipfile);
$max_size = ($size < 277) ? $size : 277;
@fseek($zip, $size - $max_size);
$pos = ftell($zip);
$bytes = 0x00000000;
while($pos < $size)
{
$byte = @fread($zip, 1);
$bytes = ($bytes << 8) | Ord($byte);
$pos++;
if($bytes == 0x504b0506){ break; }
}
$data = unpack('vdisk/vdisk_start/vdisk_entries/ventries/Vsize/Voffset/vcomment_size', fread($zip, 18));
$centd['comment'] = ($data['comment_size'] != 0) ? fread($zip, $data['comment_size']) : ''; // 注释
$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 $centd;
}
private function ReadCentralFileHeaders($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);
$header['filename'] = ($header['filename_len'] != 0) ? fread($zip, $header['filename_len']) : '';
$header['extra'] = ($header['extra_len'] != 0) ? fread($zip, $header['extra_len']) : '';
$header['comment'] = ($header['comment_len'] != 0) ? fread($zip, $header['comment_len']) : '';
if($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; } // 判断是否文件夹
return $header;
}
private function ReadFileHeader($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']);
$header['extra'] = ($data['extra_len'] != 0) ? fread($zip, $data['extra_len']) : '';
$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 $header;
}
private function ExtractFile($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.$header['filename'].'.gz', 'rb') or die("Cette archive est compress!");
if(!$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.$header['filename'].'.gz');
}
}
return true;
}
public function unZip($zipfile, $to, $index = Array(-1))
{
$ok = 0;
$zip = @fopen($zipfile, 'rb');
if(!$zip){ return(-1); }
$cdir = $this->ReadCentralDir($zip, $zipfile);
$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;
}
/**********************************************************
* 其它部分
**********************************************************/
// ------------------------------------------------------ //
// #获取被压缩文件的信息
//
// $archive = new PHPZip();
// $array = $archive->GetZipInnerFilesInfo(ZIP压缩文件名);
// for($i=0; $i<count($array); $i++) {
// printf("<b>·%s</b><br>\r\n", $array[$i][filename]);
// foreach($array[$i] as $key => $value)
// printf("%s => %s<br>\r\n", $key, $value);
// print "\r\n<p>------------------------------------<p>\r\n\r\n";
// }
// ------------------------------------------------------ //
public function GetZipInnerFilesInfo($zipfile)
{
$zip = @fopen($zipfile, 'rb');
if(!$zip){ return(0); }
$centd = $this->ReadCentralDir($zip, $zipfile);
@rewind($zip);
@fseek($zip, $centd['offset']);
$ret = array();
for($i=0; $i<$centd['entries']; $i++)
{
$header = $this->ReadCentralFileHeaders($zip);
$header['index'] = $i;
$info = array(
'filename' => $header['filename'], // 文件名
'stored_filename' => $header['stored_filename'], // 压缩后文件名
'size' => $header['size'], // 大小
'compressed_size' => $header['compressed_size'], // 压缩后大小
'crc' => strtoupper(dechex($header['crc'])), // CRC32
'mtime' => date("Y-m-d H:i:s",$header['mtime']), // 文件修改时间
'comment' => $header['comment'], // 注释
'folder' => ($header['external'] == 0x41FF0010 || $header['external'] == 16) ? 1 : 0, // 是否为文件夹
'index' => $header['index'], // 文件索引
'status' => $header['status'] // 状态
);
$ret[] = $info;
unset($header);
}
fclose($zip);
return $ret;
}
}
?>
|
<?php
//output: 2010-1-2
//int mktime ([ int $hour [, int $minute [, int $second [, int $month [, int $day [, int $year]]]]]] )
echo $test = date( 'Y-m-d', mktime(0,0,0,12+1,1+1,2009))."<br>";
//明天
echo $tomorrow = date( 'Y-m-d', mktime(0,0,0,date('m') ,date('d')+1,date('Y')))."<br>";
//昨天
echo $yesterday = date( 'Y-m-d',mktime(0,0,0,date('m') ,date('d')-1,date('Y')))."<br>";
//上一个月
echo $lastmonth = date( 'Y-m-d', mktime(0,0,0,date('m')-1,date('d'), date('Y')))."<br>";
//下一年
echo $nextyear = date( 'Y-m-d', mktime(0,0,0,date('m'), date('d'), date('Y')+1))."<br>";
//明天
echo $tomorrow = date('Y-m-d',strtotime ('+1 day'))."<br>"; //明天
/*echo strtotime("now"), "\n";
echo strtotime("10 September 2000"), "\n";
echo strtotime("+1 day"), "\n";
echo strtotime("+1 week"), "\n";
echo strtotime("+1 week 2 days 4 hours 2 seconds"), "\n";
echo strtotime("next Thursday"), "\n";
echo strtotime("last Monday"), "\n"; */
//使用strtotime增加日期
echo $date1 = strtotime('2010-08-09')."<br>";
echo date('Y-m-d',strtotime("+5 day",$date1));
//相应地,要增加月,年,将day改成month或year即可
?>
|