php目录文件在线解压缩程序-php教程

本文章提供一款完整的php目录文件在线解压缩程序，他可打包指定目录并且把目录下所有目录与文件名都打包好,按rar的方式打包,目录结构不变,同时也提供解压功能.代码如下:

$fz = new fmzip;
$fz->setzipname("打包文件名");
#打包/压缩
$fz->setsource("待打包目录");
$fz->compress($silent,$compress);
#解包/解压
$fz->settarget("待解包目录");
$fz->uncompress($silent);
*/
class fmzip
{
var $source; //压缩源
var $target; //解压目的文件夹
var $zipname;//压缩文件名
var $handle; //打开压缩文件的句柄
var $silent; //是否输出
var $count_dir; //计数器_文件夹
var $count_file;//计数器_文件
var $dirlist;
function setsource($source)//设置压缩源
{
if(!file_exists($source))
die("source <$source> does not exist.");
$this->source = $source;
}
function settarget($target)//设置解压目的文件夹
{
if(!file_exists($target))
$this->makedir($target);
chdir(dirname($_server['script_filename']));
if(substr($target,-1)=="/")
$target = substr($target,0,strlen($target)-1);
if(!file_exists($target))
{
die("target <$target> does not exist.");
}
$this->target = $target;
}
function setzipname($zipname)//设置压缩文件名
{
if(emptyempty($zipname)) $zipname = "fmzip.fz";
$this->zipname = $zipname;
}
function compress($silent = false, $compress = true) //压缩
{
$this->silent = $silent;
if($silent===false)echo "<pre>compressing...rn";
if(is_file("$this->zipname"))unlink("$this->zipname");
$this->handle = fopen($this->zipname,"w");//创建压缩文件
if($this->handle == null) die("error creating $this->zipname");//打开失败
$this->count_dir = 0; $this->count_file = 0; //初始化计数器
$this->merge($this->source);//压缩
fwrite($this->handle,"-1");//结束标志
fclose($this->handle);//关闭文件
echo "rndirectory: $this->count_dir";
echo "rnfile: $this->count_filern";
if(function_exists("gzcompress") && $compress==true)
{
file_put_contents("$this->zipname.gz",gzcompress(file_get_contents("$this->zipname")));
unlink("$this->zipname");
}
if($silent===false)
{
echo $this->listfile();
echo "</pre>";
}
}
function listfile()
{
if(file_exists("$this->zipname.gz"))
return "<a href="$this->zipname.gz" target="_blank">download $this->zipname.gz</a>";
if(file_exists("$this->zipname"))
return "<a href="$this->zipname" target="_blank">download $this->zipname</a>";
}
function merge($dir)//合并文件、文件夹(递归)
{
/* 说明：不处理link。 */
if(is_dir($dir))//如果压缩源是文件夹
{
$list = scandir($dir);//扫描文件列表
natcasesort($list);
foreach($list as $file)//先处理文件夹
{
$full = "$dir/$file";
if(!is_dir($full)||$file=="."||$file=="..")continue;//只处理文件夹
$this->count_dir++;
if($this->silent===false)
echo "[dir] $fullrn"; //输出提示
fwrite($this->handle,$this->file_info($full));//写入文件夹信息
$this->merge($full);//递归合并下级文件夹
}//文件夹处理完毕;
foreach($list as $file)//处理文件
{
$full = "$dir/$file";
if(!is_file($full)||$file=="."||$file=="..")continue; //只处理文件
$this->count_file++;
if($this->silent===false)
echo "[file] $fullrn";//输出提示
fwrite($this->handle,$this->file_info($full));//写入文件信息
}//文件处理完毕
}
else
{
$this->count_file++;
if($this->silent===false)echo "[file] $fullrn";//输出提示
fwrite($this->handle,$this->file_info($file));//写入文件信息
}
}//end function merge
function file_info($file)
{
$perm = substr(sprintf('%o',fileperms($file)), -3); //权限
$filename = str_replace($this->source,"",$file);
if(is_file($file))//文件
{
$size = filesize($file); //文件大小
return "1rn$filenamern$permrn$sizern".file_get_contents($file)."rn";// .文件内容
}
if(is_dir($file))//目录
return "0rn$filenamern$permrn";
}//end function file_info
function uncompress($silent = false)
{
$this->silent = $silent;
if($silent===false)echo "<pre>uncompressing...rn";
if(substr($this->zipname,-3)==".gz")
$this->zipname = substr($this->zipname,0,strlen($this->zipname)-3);
if(file_exists("$this->zipname.gz"))
{
if(!function_exists(gzuncompress))
die("function gzuncompress is not supported. unable to continue.");
file_put_contents($this->zipname,gzuncompress(file_get_contents("$this->zipname.gz")));
}
$this->handle = fopen($this->zipname,"r");
if($this->handle == null) die("error reading $this->zipname");//打开失败
$count = 0;
while(1)
{
$count ++;
$type = $this->read_line(); //读取类型
if($type === "-1")break;//处理完毕,退出
$filename = $this->target.$this->read_line();//读取文件名
$permission = $this->read_line();//读取权限
/* <文件夹> [0]n[file_name]n[perm]n */
if($type === "0")//目录
{
if($this->silent === false)//输出提示
echo "[dir] $filename [$permission]rn";
$this->makedir($filename);//创建文件夹
chdir(dirname($_server['script_filename']));
chmod($filename,$permission);
$this->dirlist[$filename] = 1;
continue;
}
/* <文件> [1]n[file_name]n[perm]n[size]n[contents]n */
if($type === "1")//文件
{
$this->count_file++;
$size = $this->read_line(); //读取文件大小
if($this->silent === false)//输出提示
echo "[file] $filename [$permission] [size = $size]rn";
if($size!=0)
{
$fp = fopen($filename,"w");
$contents = fread($this->handle,$size);
fwrite($fp,$contents);
fclose($fp);
chmod($filename,$permission);
}
$this->read_line();//内容后的一个回车
continue;
}
}
$this->count_dir = count($this->dirlist);
if($silent===false)
echo "ndirectory: $this->count_dir";
echo "nfile: $this->count_filen</pre>n";
fclose($this->handle);
if(file_exists("$this->zipname.gz"))unlink("$this->zipname");
}//end function uncompress;
function read_line()
{
$a = fgets($this->handle);
$a = str_replace("rn","",$a);
$a = str_replace("n","",$a);
return $a;
}
function makedir($full)
{
list($a,$b) = split("/",$full,2);
if($a == "") return;
if(file_exists($a)&&!is_dir($a))die("can't create dir $a");
if(!file_exists($a))@mkdir($a);
chdir($a);//开源代码phpfensi.com
if($b!=="")
$this->makedir($b);
chdir("..");
}//end function makedir
} //end class fmzip
/*
//使用方法:
#必须
include("包含这个class的php文件");
$fz = new fmzip;
$fz->setzipname("打包文件名");
#打包/压缩
$fz->setsource("待打包目录");
$fz->compress($silent,$compress);
#解包/解压
$fz->settarget("待解包目录");
$fz->uncompress($silent);
$silent : true|false (不加引号!) 是否产生输出默认为true,不产生
$compress : true|false (不加引号!) 是否压缩默认为true,压缩

php目录文件在线解压缩程序

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