function_exists |
Discworld driver help |
function_exists |
Name
function_exists() - find the file containing a given function in an object
Synopsis
string function_exists( string str, object ob, int flag );
Description
Return the file name of the object that defines the function `str' in object `ob'. The returned value can be other than 'file_name(ob)' if the function is defined by an inherited object.
0 is returned if the function was not defined.
Note that function_exists() does not check shadows.
If `flag' is omitted or zero, functions that cannot be called are not returned (e.g. the function is returned only if call_other(ob, str) would succeed). If `flag' is nonzero, static and private functions are returned too.
