[asterisk-users] AEL: how to check if variable is defined

[Philipp Kempgen]

Richard Lyman schrieb:
> Philipp Kempgen wrote:

>> But I guess it wouldn't hurt to add a DEFINED() function to
>> Asterisk.
>>
>> if (DEFINED(myvariable)) {
>>     // ...
>> }
>>   
> Isn't that what ISNULL is for?

No. ISNULL() works on values not on variables.

But Dave Fullerton found EXISTS():
http://lists.digium.com/pipermail/asterisk-users/2008-December/224059.html


   Philipp Kempgen

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