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";
    }
?>
  

null value in php

$x = null;
var_dump($x);

php null

<?php
  
	$var = NULL;  

?>

is null php

is_null($var)

null php

$var = NULL;

what is is_null in php

// is _nuul function returens wether a var is null ore not . 
// if the var is null the function returns 1. if it is not null retyrns false / nothing

<?php
  
  $x= Null; 
if(is_null($x){  
  echo " yes";}else{ echo "false";}