check if a variable is undefined or NULL

check if a variable is undefined or NULL

linked_class

code

linked_uid

SYTk7

views

19

week_num

39

month_num

9

year_num

25

id: 281023
uid: o37WL
insdate: 2025-09-22 03:22:32
title: check if a variable is undefined or NULL
additional:
category:
linked_class: code
linked_uid: SYTk7
views: 19
week_num: 39
month_num: 9
year_num: 25

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This is my test area for webdev. I keep a collection of code here, mostly for my reference. Also if i find a good link, i usually add it here and then forget about it. more...

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🪦 2000 - 16 Oct 2022 - Boots
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