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is_countable( mixed $var )

Polyfill for is_countable() function added in PHP 7.3.

Description

Verify that the content of a variable is an array or an object implementing the Countable interface.

Parameters

$var

(mixed) (Required) The value to check.

Return

(bool) True if $var is countable, false otherwise.

Source

File: wp-includes/compat.php 

function is_countable( $var ) {
		return ( is_array( $var )
			|| $var instanceof Countable
			|| $var instanceof SimpleXMLElement
			|| $var instanceof ResourceBundle
		);
	}

Used By

Used By Description
wp-includes/meta.php: update_metadata()

Updates metadata for the specified object. If no value already exists for the specified object ID and metadata key, the metadata will be added.

Changelog

Version Description
4.9.6 Introduced.

© 2003–2019 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/is_countable