Podręcznik PHP
Poprzedni	Rozdział 14. References Explained	Następny

Returning References

Returning by-reference is useful when you want to use a function to find which variable a reference should be bound to. When returning references, use this syntax:

function &find_var ($param)
{
    ...code...
    return $found_var;
}

$foo =& find_var ($bar);
$foo->x = 2;

In this example, the property of the object returned by the find_var function would be set, not the copy, as it would be without using reference syntax.

Notatka: Unlike parameter passing, here you have to use & in both places - to indicate that you return by-reference, not a copy as usual, and to indicate that reference binding, rather than usual assignment, should be done for $foo.

Poprzedni	Spis treści	Następny
Passing by Reference	Początek rozdziału	Unsetting References