The meaning of ->

PHP
1 
<?php

require_once('idna_convert.class.php');
$IDN = new idna_convert();
$serverName = $_SERVER["SERVER_NAME"];
$IDNserverName =  rawurlencode($IDN [COLOR="Red"]->[/COLOR] decode($serverName));
echo $IDNserverName;

?>

I have the code above.
I like to know about the meaning of “->”
If you give me a simple code which contains “->”,
It will be very helpful.

2

http://us.php.net/manual/en/language.oop5.php

3

It’s used to access a member (variable) or method (function) of an object.
$IDN is your object
decode() is a method of the idna_convert class

so $IDN->decode() calls that method