note 57501 added to function.is-a

is_a returns TRUE for instances of children of the class. For example: class Animal {} class Dog extends Animal {} $test = new Dog(); In this example is_a($test, "Animal") would evaluate to TRUE as well as is_a($test, "Dog"). This seemed intuitive to me, but did not seem to be documented. ---- Manual Page -- http://www.php.net/manual/en/function.is-a.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+57501 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+57501&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+57501&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+57501&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+57501&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+57501&report=yes&reason=non-english Delete: already in docs -- http://master.php.net/manage/user-notes.php?action=delete+57501&report=yes&reason=already+in+docs Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+57501&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+57501&report=yes Search -- http://master.php.net/manage/user-notes.php