Example 2. test_script.php
<pre>
<?php
include "classes.inc";
// utility functions
function print_vars($obj)
{
$arr = get_object_vars($obj);
while (list($prop, $val) = each($arr))
echo "\t$prop = $val\n";
}
function print_methods($obj)
{
$arr = get_class_methods(get_class($obj));
foreach ($arr as $method)
echo "\tfunction $method()\n";
}
function class_parentage($obj, $class)
{
if (is_subclass_of($GLOBALS[$obj], $class)) {
echo "Object $obj belongs to class " . get_class($$obj);
echo " a subclass of $class\n";
} else {
echo "Object $obj does not belong to a subclass of
$class\n";
}
}
// instantiate 2 objects
$veggie = new Vegetable(true, "blue");
$leafy = new Spinach();
// print out information about objects
echo "veggie: CLASS " . get_class($veggie) . "\n";
echo "leafy: CLASS " . get_class($leafy);
echo ", PARENT " . get_parent_class($leafy) .
"\n";
// show veggie properties
echo "\nveggie: Properties\n";
print_vars($veggie);
// and leafy methods
echo "\nleafy: Methods\n";
print_methods($leafy);
echo "\nParentage:\n";
class_parentage("leafy", "Spinach");
class_parentage("leafy", "Vegetable");
?>
</pre>
One important thing to note in the example above is that
the object $leafy is an instance of the class Spinach which
is a subclass of Vegetable, therefore the last part of the
script above will output:
[...]
Parentage:
Object leafy does not belong to a subclass of Spinach
Object leafy belongs to class spinach a subclass of Vegetable
Table of Contents
call_user_method_array -- Call a user method given with
an array of parameters [deprecated]
call_user_method -- Call a user method on an specific object
[deprecated]
class_exists -- Checks if the class has been defined
get_class_methods -- Returns an array of class methods'
names
get_class_vars -- Returns an array of default properties
of the class
get_class -- Returns the name of the class of an object
get_declared_classes -- Returns an array with the name of
the defined classes
get_declared_interfaces -- Returns an array of all declared
interfaces.
get_object_vars -- Returns an associative array of object
properties
get_parent_class -- Retrieves the parent class name for
object or class
is_a -- Returns TRUE if the object is of this class or has
this class as one of its parents
is_subclass_of -- Returns TRUE if the object has this class
as one of its parents
method_exists -- Checks if the class method exists
