dirname(dirname(__FILE__))与dirname(__FILE__)与__FILE__

echo __FILE__.'<br />';
echo dirname(__FILE__).'<br />';
echo dirname(dirname(__FILE__)).'<br />';
D:\phpStudy\WWW\abc\test\test.php
D:\phpStudy\WWW\abc\test
D:\phpStudy\WWW\abc

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转载自blog.csdn.net/ifyouwanttogo/article/details/80135113