is_a
(PHP 4 >= 4.2.0, PHP 5)
is_a -- Returns
TRUE if the object is of this class or has this class as one of its parents
Description
bool
is_a ( object object, string class_name)
This function returns TRUE if the object is of this class or has this class as one of its parents, FALSE otherwise.
Пример 1. is_a() example
<?php
// define a class
class WidgetFactory
{
var $oink = 'moo';
}
// create a new object
$WF = new WidgetFactory();
if (is_a($WF, 'WidgetFactory')) {
echo "yes, \$WF is still a WidgetFactory\n";
}
?> | |
Смотрите также get_class(), get_parent_class(), and is_subclass_of().