note 70373 modified in function.is-subclass-of by danbrown
| From: | danbrown@php.net | Date: | Mon, 23 Feb 2009 16:19:27 +0000 |
| Subject: | note 70373 modified in function.is-subclass-of by danbrown | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-151018@lists.php.net to get a copy of this message | ||
For PHP4:
<?php
/** Returns whether specified class is subclass of the other class. */
function is_subclass($sClass, $sExpectedParentClass){
do if( $sExpectedParentClass === $sClass ) return true;
while( false != ($sClass = get_parent_class($sClass)) );
return false;
}
// Test:
class A {} class B extends A {} class C extends B {} echo (int) is_subclass('C',
'A');
?>
--was--
For PHP4:
/** Returns whether specified class is subclass of the other class. */
function is_subclass($sClass, $sExpectedParentClass){
do if( $sExpectedParentClass === $sClass ) return true;
while( false != ($sClass = get_parent_class($sClass)) );
return false;
}
// Test:
class A {} class B extends A {} class C extends B {} echo (int) is_subclass('C',
'A');
http://php.net/manual/en/function.is-subclass-of.php