PHP website backup program code sharing_PHP tutorial

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Website program backup

error_reporting(E_ALL & ~E_NOTICE);
ini_set('memory_limit', '2048M');
echo "Select a file or directory to compress:
";
$fdir = opendir('./');
while($file=readdir($fdir))
{
if($file=='.'|| $file=='. .')
continue;
echo " ";
if(is_file($file))
{
echo "2 $ file
";
}
else
{
echo "0 $file
";
}
}
?>


Contains the following file types:


(File types are separated by "|", the default is empty to include any file, for example: if you need to package php and jpg files, enter "php|jpg")



Save the compressed file to the directory:


(leave blank for this directory, must have write permission)



Compressed file name:


(.zip)








error_reporting(E_ALL & ~E_NOTICE);
set_time_limit(0);
class PHPzip
{
var $file_count = 0;
var $datastr_len = 0;
var $dirstr_len = 0;
var $filedata = ''; //This variable is only accessed by programs outside the class
var $gzfilename;
var $fp;
var $dirstr='';
var $filefilters = array();
function SetFileFilter($filetype)
{
$this->filefilters = explode('|',$filetype);
}
//Return the modification time format of the file.
//Only called for internal functions of this class.
function unix2DosTime($unixtime = 0)
{
$timearray = ($unixtime == 0) ? getdate() : getdate($unixtime);
if ($timearray['year'] {
$timearray['year'] = 1980;
$timearray[ 'mon'] = 1;
$timearray['mday'] = 1;
$timearray['hours'] = 0;
$timearray['minutes'] = 0;
$ timearray['seconds'] = 0;
}
return (($timearray['year'] - 1980) > 1);
}
//Initialize the file, create the file directory,
//Return the write permission of the file.
function startfile($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;
}
//Add a file to the zip package.
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);
//