is_countable() WP 1.0
Polyfill for is_countable() function added in PHP 7.3.
Verify that the content of a variable is an array or an object implementing the Countable interface.
1 time — 0.000001 sec (speed of light) | 50000 times — 0.01 sec (speed of light) | PHP 7.1.11, WP 4.9.8
No Hooks.
Return
true/false. True if $var is countable, false otherwise.
Usage
is_countable( $var );
- $var(mixed) (required)
- The value to check.
Changelog
| Since 4.9.6 | Introduced. |
Code of is_countable() is countable WP 5.6.2
function is_countable( $var ) {
return ( is_array( $var )
|| $var instanceof Countable
|| $var instanceof SimpleXMLElement
|| $var instanceof ResourceBundle
);
}