php打包程序（在线解压与在线打包下载源码）(1/8)_PHP教程

php教程打包程序（在线解压与在线打包下载源码）
本程序支持文件下载解压与在线压缩,这样我们就查以实例在线解压与在线打包下载功能了。
*/
//phpzip.class.php
class phpzip{
var $datasec, $ctrl_dir = array();
var $eof_ctrl_dir = "x50x4bx05x06x00x00x00x00";
var $old_offset = 0; var $dirs = array(".");
function get_list($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 add($files,$compact) {
if(!is_array($files[0])) $files=array($files);
for($i=0;$files[$i];$i++){
$fn = $files[$i];
if(!in_array(dirname($fn[0]),$this->dirs))
$this->add_dir(dirname($fn[0]));
if(basename($fn[0]))
$ret[basename($fn[0])]=$this->add_file($fn[1],$fn[0],$compact);
}
return $ret;
}

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