php获取根目录

http://%77%77%77%2E%66%6F%72%61%73%70%2E%63%6E
php获取一些根目录的方法
<?php
echo $_SERVER['PHP_SELF'];
echo "<BR>";
echo __FILE__;
echo "<BR>";
echo realpath("./");
echo "<BR>";
echo __DIR__;
echo "<BR>";
echo "<BR>";
define("ROOT",str_ireplace("Temp","",__DIR__));
echo ROOT;
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