check nulls in php 8

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Evan
10 Mar 2017
1// The is_null() function checks whether a variable is NULL or not. This function returns true (1) if the variable is NULL, otherwise it returns false/nothing.
2
3<?php
4    $var = NULL;  
5	if (is_null($var)) {
6      	echo "yes, is null";
7      
8    } else {
9      	echo "not null";
10    }
11?>
12
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Sara
05 Jan 2021
1
2$country = $session?->user?->getAddress()?->country;
3
4
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