$_SERVER['PHP_SELF']: /~u30/examples_php_general/web/basetag_construction.php
dirname($_SERVER['PHP_SELF']): /~u30/examples_php_general/web
__DIR__: /home/course/u30/public_html/examples_php_general/web
dirname(__DIR__): /home/course/u30/public_html/examples_php_general
dirname(__DIR__, 1): /home/course/u30/public_html/examples_php_general
dirname(__DIR__, 2): /home/course/u30/public_html
dirname(__DIR__, 3): /home/course/u30
basename(dirname(__DIR__, 1)): examples_php_general
basename(dirname(__DIR__, 2)): public_html
basename(dirname(__DIR__, 3)): u30
isset($_SERVER['HTTPS']): no
$_SERVER['HTTP_HOST']: ps.cs-smu.ca
$path: /~u30/examples_php_general/web
$end: examples_php_general
strstr($path, $end, true): /~u30/
$base: http://ps.cs-smu.ca/~u30/examples_php_general/