wp_validate_boolean( mixed $value )

Filters/validates a variable as a boolean.

Description

Alternative to filter_var( $value, FILTER_VALIDATE_BOOLEAN ).

Parameters

$value

(Required) Boolean value to validate.

Return

(bool) Whether the value is validated.

Source

File: wp-includes/functions.php 

function wp_validate_boolean( $var ) {
	if ( is_bool( $var ) ) {
		return $var;
	}

	if ( is_string( $var ) && 'false' === strtolower( $var ) ) {
		return false;
	}

	return (bool) $var;
}

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Changelog

Changelog
Version Description
4.0.0 Introduced.