How to check if a variable is null in PHP
In this tutorial, we are going to see how to check if a variable is null in PHP. You can use PHP’s is_null() function to check if a variable is null or not.
See also : How to check if a variable is empty in PHP
How to check if a variable is null in PHP
<?php
$var = NULL;
if(is_null($var)){
echo '$var is null.'. '<br />';
}
if(is_null($foo)){
echo '$foo is null.';
}
?>
Output:
$var is null. $foo is null.
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