PHP 获取文件路径(灵活应用__FILE__)_PHP
__FILE__ ,是返回文件的完整路径和文件名。如果用在包含文件中,则返回包含文件名。自 PHP 4.0.2 起,__FILE__ 总是包含一个绝对路径,而在此之前的版本有时会包含一个相对路径。dirname(__FILE__),返回当前文件路径的部分路径,也就是去掉文件名。
演示代码:
复制代码 代码如下:
// 获取文件的当前路径 + 文件名
echo __FILE__;
echo '
';
// 获取文件的当前路径
echo dirname(__FILE__);
echo '
';
// 获取文件的上一级目录路径
echo dirname(dirname(__FILE__));
?>
运行结果:
复制代码 代码如下:
D:\wamp\www\index.php
D:\wamp\www
D:\wamp
__FILE__很好使,可以获取文件当前的路径,即便被include也不会改变,可以作为网站在服务器上的绝对路径,其他目录以此为基准分布。

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