check if a class is extended from another?

[j0sh]

hi all.

i use different classes which i include dynamically when i use them.
now it might be that a needed class is extended from another class that is not already included, so the error would come

"can not inherit from inexistent class"

or something like that.

is there a way to check if a class is extended from another one before really including and parsing it? so i could include the parent class first?

thank you for help. 🙂

greets
josh

[ahundiak]

Nope. Because the parser would have to first parse the class to find it's parents which of course would generate an error.

Best thing to do is to require_once the parent class in each of the derived classes.

require_once 'parent.class.php';

class child extends parent

And then you don't have to worry about it.

[rehfeld]

i suppose you could manually make your own array w/ class names and what thier parents would be, and then do a check w/ class_exists or get_defined_classes etc...
and if need then you could include the class parent

but maybe you should rethink your logic/design so you dont need to do this type of stuff.

[j0sh]

ok thank you both. 🙂