what a -> means!

[Houdini]

I can not find the meaning of an expression such as the following example code I do no understand what -> means. Here's the example code:

function do_something()
	{
		global $ibforums, $DB, $std;

	if ( $ibforums->member['mgroup'] == $ibforums->vars['admin_group'] )
	{
		$this->result = "You're an admin!";
	}
	else
	{
		$this->result = "You're not an admin!";
	}
}

the above is a function that is part of a class

class module extends module_loader how can I interpret what this means.

[justsomeone]

$ibforums->member['mgroup']

$ibforums is an instance of an object. That object contains a property called "member" which is an array. That array has an element identified by the index "mbgroup".

Does that help?

class module extends module_loader is further OOP-speak. A class called "module_loader" already exists and a new class called "module" is now being defined, which will have all the same properties and methods as "module_loader" but which may well have addiotnal properties and methods as well which are about to be defined.

OOP stands for Object-Oriented Programming, and you may well need to read up on this before you will be able to make proper sense of the code you are currently reading.