check whether a variable is null in PHP
In this post we will give you information about check whether a variable is null in PHP. Hear we will give you detail about check whether a variable is null in PHPAnd how to use it also give you demo for it if it is necessary.
Use the PHP is_null() function
You can use the PHP is_null() function to check whether a variable is null or not.
Let’s check out an example to understand how this function works:
<?php
$var = NULL;
// Testing the variables
if(is_null($var)){
echo 'This line is printed, because the $var is null.';
}
echo "<br>";
if(is_null($inexistent)){
echo 'This line is printed, because the $inexistent is null.';
}
?>
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