I haven't seen anyone note method chaining in PHP5. When an
object is returned by a method in PHP5 it is returned by
default as a reference, and the new Zend Engine 2 allows you
to chain method calls from those returned objects. For
example consider this code:
<?php
class Foo {
protected $bar;
public function __construct() {
$this->bar = new Bar();
print "Foon";
}
public function getBar() {
return $this->bar;
}
}
class Bar {
public function __construct() {
print "Barn";
}
public function helloWorld() {
print "Hello Worldn";
}
}
function test() {
return new Foo();
}
test()->getBar()->helloWorld();
?>
Notice how we called test() which was not on an object, but
returned an instance of Foo, followed by a method on Foo,
getBar() which returned an instance of Bar and finally
called one of its methods helloWorld(). Those familiar with
other interpretive languages (Java to name one) will
recognize this functionality. For whatever reason this
change doesn't seem to be documented very well, so hopefully
someone will find this helpful.
----
Server IP: 64.71.164.2
Probable Submitter: 72.22.26.23
----
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