21 Jul
2011
21 Jul
'11
2:05 p.m.
sip-router writes:
Details - There is an annoying difference between an uninitialized $avp and $var. When the value is queried, the $avp returns <null> whereas the $var returns 0. The latter is wrong, as 0 is a meaningful value.
this has been discussed before. check archives. if i remember correctly, vars are implemented in such a way that it is not possible to differentiate 0 from null.
-- juha