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is_a

Checks if the object is of this class or has this class as one of its parents (PHP 4 >= 4.2.0, PHP 5)
bool is_a ( object object, string class_name )

Checks if the given object is of this class or has this class as one of its parents.

Note:

The is_a() function is deprecated as of PHP 5 in favor of the instanceof type operator.

Parameters

object

The tested object

class_name

The class name

Return Values

Returns TRUE if the object is of this class or has this class as one of its parents, FALSE otherwise.

Examples

Example 383. 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";
}
?>


Example 384. Using the instanceof operator in PHP 5

<?php
if ($WF instanceof WidgetFactory) {
   echo
'Yes, $WF is a WidgetFactory';
}
?>