is_array()
is_array() — Finds whether a variable is an array.
Built-in function of PHP 8.5. The manual lists it as available in PHP 4, PHP 5, PHP 7, PHP 8. This page is the reference card: signature, parameters and return value, plus the changelog and the example the manual provides.
Signature
is_array(mixed $value): bool
Parameters
| Parameter | Type | What it takes |
|---|---|---|
| $value | mixed | The variable being evaluated. |
Return value
Returns true if value is an array, false otherwise.
Example
A runnable snippet:
$yes = array('this', 'is', 'an array'); echo is_array($yes) ? 'Array' : 'not an Array'; echo "\n"; $no = 'this is a string'; echo is_array($no) ? 'Array' : 'not an Array';
Output:
Array not an Array
See also
array_is_list(), is_float(), is_int(), is_string(), is_object()
All PHP 8.5 built-in functions
Reference card built from the PHP manual page is_array() (PHP documentation, CC BY 3.0). The page is generated from the manual, so the wording of the parameter and return value text follows php.net.