is null php

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Mía
23 Aug 2018
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
source
Giuseppe
13 Aug 2020
1is_null($foo)
source
Allison
15 Nov 2018
1<?php
2  
3	$var = NULL;  
4
5?>
source
Myla
24 Apr 2020
1is_null (var_name)
Isaac
29 Nov 2020
1is_null($var)
Jordy
16 May 2020
1$var = NULL;
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