php的ZipArchive类用法实例
这篇文章主要介绍了php的ZipArchive类用法实例,较为详细的讲述了ZipArchive类操作zip文件的方法,需要的朋友可以参考下
本文实例讲述了php的ZipArchive类用法,分享给大家供大家参考。具体如下:
通常来说,php5.2开始支持ZipArchive类,php4只能使用zip函数。其实在官方实现zip类之前,已经有大牛贡献了打包解压zip文件的方法。现在php包含了ZipArchive类,当然优先使用。使用该类能创建和解压zip文件,也能直接读取zip压缩包内的内容,很方便,这里主要总结下读取和解压的过程。
解压一个包到指定目录:
复制代码 代码如下:
$zip = new ZipArchive;
if ($zip->open('test.zip') === TRUE) {
$zip->extractTo('/my/destination/dir/');
$zip->close();
echo 'ok';
} else {
echo 'failed';
}
?>
如果只是需要读取包中某个文件的内容,,需要文件名或者文件的索引值。
复制代码 代码如下:
$zip = new ZipArchive;
if ($zip->open('test.zip') === TRUE) {
echo $zip->getFromName('example.php');
$zip->close();
}
?>
如果example.php在某目录下,获取内容时需要加上路径。
如果只知道文件名,而不知到文件的具体路径,可以搜索指定文件名的索引,再依靠索引获取内容。
复制代码 代码如下:
$zip = new ZipArchive;
if ($zip->open('test.zip') === TRUE) {
$index=$zip->locateName('example.php', ZIPARCHIVE::FL_NOCASE|ZIPARCHIVE::FL_NODIR);
$contents = $zip->getFromIndex($index);
}
?>
上面获取索引依靠 locateName方法,如果压缩包内多个路径下有同名文件,好像只能返回第一个的索引,如果要获取所有同名文件的索引,只能使用笨办法,循环搜索。
复制代码 代码如下:
$zip = new ZipArchive;
if ($zip->open('test.zip') === TRUE) {
for($i = 0; $i numFiles; $i++)
{
if(substr_count($zip->getNameIndex($i), 'example.php')>0){
$contents = $zip->getFromIndex($i);
}
}
}
?>
希望本文所述对大家的php程序设计有所帮助。

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