what this function does?

[mihaita]

$_SERVER['PHP_SELF']
this is a function i don't find in my book, and i'm really curious about it.i hope you won't get angry if you consider this a silly question.Thank you very much!

[jrolands]

check out predefined variables in php manual

[Stoutman]

From PHP.net:

'PHP_SELF'
The filename of the currently executing script, relative to the document root. For instance, $_SERVER['PHP_SELF'] in a script at the address http://example.com/test.php/foo.bar would be /test.php/foo.bar. The FILE constant contains the full path and filename of the current (i.e. included) file.

If PHP is running as a command-line processor this variable contains the script name since PHP 4.3.0. Previously it was not available.

** This is probably not what you are looking for, but it might answer your question. It is a global variable which might or might not be what you need right now.