PHP considers null is equal to zero

Question

In php, ($myvariable==0) When $myvariable is zero, the value of the expression is true; when $myvariable is null, the value of this expression is also true. How

Answer 1

There's an is_null function, but this will just replace your $myvariable!=null

Answer 2

$myvariable === 0

read more about comparison operators.

Answer 3

For my case i found this soulution and it works for me :

if ($myvariable === NULL) {
    codehere...
}

Answer 4

Try ($myvariable === 0) which will not perform type coercion.

Answer 5

If your zero could be a string, you should also considere checking the "zero string"

($myvariable === 0 || $myvariable === '0')

Answer 6

To identify as null or zero by:

• is_int($var) if a variable is a number or a numeric string. To identify Zero, use is_numeric($var) is also the solution or use $var === 0

• is_null($var) if a variable is NULL