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PHP中获取文件扩展名程序代码

WBOY
Release： 2016-06-13 10:15:51
Original
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在php中有时我们想获得上传文件的扩展名，下面我来总结了在php中扩展名获取方法总结，有需要的朋友可参考。

方法一，我自己最的一种获取扩展名方法

 代码如下 复制代码

function extend_2($file_name)
{
$extend = pathinfo($file_name);
$extend = strtolower($extend["extension"]);
return $extend;
}

方法二，利用explode函数与end函数组合操作

 代码如下 复制代码

function get_extension($file)
{
return end(explode('.', $file));
}


方法三，就是像以前在asp中获取扩展名一样的做法。

 代码如下 复制代码

function get_extension($file)
{
substr(strrchr($file, '.'), 1);
}


好了方法就这三种了，基本来满足的你获取文件扩展名了。

Related labels：
php upload under code exist us extension name document of program Obtain get
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