Chovy's Blog

PHP5 has a Pass-by-reference notation: &$bar in line 3 as seen here in the parameter to a function bar(); Basically, this is just a point from the sub routine’s “$bar” back to the caller’s $foo. In this case, a change to the reference variable $bar is reflected in the main variable $foo.

“bar points to/references foo”
$bar => $foo;


1


Output:


foo:foo
bar:foo
bar:bar
foo:bar


Recommended reading: PHP 5 Objects, Patterns, and Practice