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:
<?php 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.
Note:
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.
Php language.references.return Function syntax tag
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Php language.references.return syntax tutorial
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