Use PHP to get the current URL path function and server variable _php tips

PHP Gets the function and server variables for the current URL path:
Code:

Copy Code code as follows:

<?php
$path =/usr/opt/. /ECT/ABCD;
echo $_server[' Document_root ']. "   <br> "; Get the server document root variable (depending on the configuration in http.conf)
echo $_server[' php_self ']. "  <br> "; Gets the path to the file that executes the code, which is related to the configuration in http.conf.
echo __file__. "  <br> "; A variable that obtains the file system absolute path of a file
echo dirname (__file__); function to get the folder path where the file resides
echo Realpath ($pah);
?>

The value returned:

Copy Code code as follows:

/usr/opt/apache2/htdocs/
/alias/aa.php
/usr/opt/apache2/htdocs/kamap/aa.php
/usr/opt/apache2/htdocs/kamap/
/usr/etc/abcd