oci_internal_debug Enables or disables internal debug output &reftitle.description; voidoci_internal_debug boolonoff Enables or disables internal debug output. &reftitle.parameters; onoff Set this to &false; to turn debug output off or &true; to turn it on. &reftitle.returnvalues; &return.void; &reftitle.notes; In PHP versions before 5.0.0 you must use ociinternaldebug instead. This name still can be used, it was left as alias of oci_internal_debug for downwards compatability. This, however, is deprecated and not recommended.