PHP

is null php

// 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.

<?php
    $var = NULL;  
	if (is_null($var)) {
      	echo "yes, is null";
      
    } else {
      	echo "not null";
    }
?>
  

php check for null

is_null($foo)

null value in php

$x = null;
var_dump($x);

is null php

is_null($var)

check nulls in php 8

$country = $session?->user?->getAddress()?->country;