php check for null

// 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";
    }
?>
  

4.5
2
Rong Nguyen 155 points

                                    &lt;?php
  
	$var = NULL;  

?&gt;

4.5 (2 Votes)
0
5
1
Jackarms 75 points

                                    is_null($foo)

5 (1 Votes)
0
4.22
9

                                    is_null($var)

4.22 (9 Votes)
0
4.4
5
Daevin 100 points

                                    
$country = $session?-&gt;user?-&gt;getAddress()?-&gt;country;

4.4 (5 Votes)
0
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