Gettext_Translations::make_plural_form_function( int $nplurals, string $expression )

Makes a function, which will return the right translation index, according to the plural forms header

Parameters

$nplurals

(int) (Required)

$expression

(string) (Required)

Source

File: wp-includes/pomo/translations.php 

function make_plural_form_function( $nplurals, $expression ) {
			try {
				$handler = new Plural_Forms( rtrim( $expression, ';' ) );
				return array( $handler, 'get' );
			} catch ( Exception $e ) {
				// Fall back to default plural-form function.
				return $this->make_plural_form_function( 2, 'n != 1' );
			}
		}

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Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/classes/gettext_translations/make_plural_form_function