is_null

PHP 4 >= 4.0.4, PHP 5, PHP 7, PHP 8
is_null - Finds whether a variable is null
Manual
Code Examples

is_null( mixed$value ): bool

Finds whether the given variable is null.

Parameters

value

The variable being evaluated.

Return Values

Returns true if value is null, false otherwise.

Related Functions

  • is_array - Finds whether a variable is an array
  • is_bool - Finds out whether a variable is a boolean
  • is_float - Finds whether the type of a variable is float
  • is_int - Find whether the type of a variable is integer
  • is_numeric - Finds whether a variable is a number or a numeric string
  • is_object - Finds whether a variable is an object
  • isset - Determine if a variable is declared and is different than null
  • is_string - Find whether the type of a variable is string

Example of is_null

Show all examples for is_null

Edit/Test in Sandbox
PHP Version:


Function is_null:

Variable handling Functions

Most used PHP functions