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PHP执行zip与rar解压缩方法实现代码

Jun 21, 2016 am 08:56 AM
archive extract php rar

Zip:PclZip http://www.phpconcept.net/pclzip/index.en.php
Rar:PECL rar http://pecl.php.net/package/rar
以往过去要在php下执行解压缩程序,无非最常见的方法是写command 然后用exec()等执行函式去跑
这在Windows下或许可以,但换成Unix话会碍于帐号权限问题而无法顺利执行
那有没有那种本身就有提供函式可以直接使用而不需要去下command去跑的方法呢
答桉有(话说找了好几天才找到可以用的方法......XD)
先讲Zip,由于php内建本身就有提供zip相关函式(但须先要有ziplib函式)但不是很好用
就光extract来讲,内建函式只负责单纯解压缩档桉出来,而不是会按照资料夹依序解压缩出来
这样就失去extract的作用
而要讲的 PclZip 这支,本身就有提供 extension 了,故有没有Ziplib就没差
且免安装,只需要再用他时 include 进来就可以了
例如: 这样
此外在extract部分,则是会按照资料夹顺序依序解压缩出来,而并非单纯解压缩档桉出来
相关用法像这样

复制代码 代码如下:


require_once('pclzip.lib.php');
$archive = new PclZip('archive.zip');
if ($archive->extract() == 0) { /*解压缩路径跟原始档相同路径*/
die("Error : ".$archive->errorInfo(true));
}
?>


当然也可以指定解压缩路径,像这样

复制代码 代码如下:


include('pclzip.lib.php');
$archive = new PclZip('archive.zip');
if ($archive->extract(PCLZIP_OPT_PATH, 'data') { /*data换成其他路径即可*/
die("Error : ".$archive->errorInfo(true));
}
?>


如果再写一支自动建立目录的script会更好,因为函式本身不会判断压缩档裡第一层是档桉还是资料夹(这我想其他相关函式也做不到吧!!!)
再来是Rar,这问题比较大,由于php本身没提供rar相关函式,所以需要求助第三方函式来用
所幸有这个 PECL(The PHP Extension Community Library)
裡面有个 rar 的 package 可以使用
不过须得手动安装才行
若是 Unix 话,可以参考下列安装法

fetch http://pecl.php.net/get/rar-x.x.x.tgz
gunzip rar-xxx.tgz
tar -xvf rar-xxx.tar
cd rar-xxx
phpize
./configure && make && make install

当然若是 freebsd 话,用 port 装会更快

cd /usr/ports/archivers/pecl-rar
make
make install

记得安装完后须 restart apache
安装完后可以做测试

复制代码 代码如下:


$rar_file = rar_open('example.rar') or die("Failed to open Rar archive");
/*example.rar换成其他档桉即可*/
$entries_list = rar_list($rar_file);
print_r($entries_list);
?>


比较要注意的,若是用 port 安装话,版本会比较新(官网只有到0.3.1,port 安装话已经到0.3.4),所以用法上会有些出入
但extract用法上并无差异
相关用法像这样

复制代码 代码如下:


$rar_file = rar_open('example.rar') or die("Can't open Rar archive");
/*example.rar换成其他档桉即可*/
$entries = rar_list($rar_file);
foreach ($entries as $entry) {
$entry->extract('/dir/extract/to/'); /*/dir/extract/to/换成其他路径即可*/
}
rar_close($rar_file);
?>


跟Zip部分一样,若搭配自动建立目录会更好



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