_nx() │ WP 2.8.0

Retrieves the translation of singular or plural form based on the supplied number, with given context.

This is a hybrid of _n() and _x(). It supports context and plurals.

Used when you want to use the appropriate form of a string with context based on whether a number is singular or plural.

Read more about the translation of multiple forms of numbers in the description of _n().

Internal function — this function is designed to be used by the kernel itself. It is not recommended to use this function in your code.

1 time — 0.000041 sec (very fast) | 50000 times — 0.12 sec (very fast) | PHP 7.1.2, WP 4.7.3
Hooks from the function

Return

String. The translated singular or plural form.

Usage

_nx( $single, $plural, $number, $context, $domain );
$single(string) (required)
The text to be used if the number is singular.
$plural(string) (required)
The text to be used if the number is plural.
$number(int) (required)
The number to compare against to use either the singular or plural form.
$context(string) (required)
Context information for the translators.
$domain(string)
Text domain. Unique identifier for retrieving translated strings.
Default: 'default'

Examples

1

#1 Example of a generic phrase which is disambiguated via the context parameter 

$people  = 5;
$animals = 7;
printf( _nx( '%s group', '%s groups', $people, 'group of people', 'text-domain' ), $people ) );
printf( _nx( '%s group', '%s groups', $animals, 'group of animals', 'text-domain' ), $animals ) );

Changelog

Since 2.8.0 Introduced.
Since 5.5.0 Introduced ngettext_with_context-{$domain} filter.

_nx() code WP 6.5.2

wp-includes/l10n.php 
function _nx( $single, $plural, $number, $context, $domain = 'default' ) {
	$translations = get_translations_for_domain( $domain );
	$translation  = $translations->translate_plural( $single, $plural, $number, $context );

	/**
	 * Filters the singular or plural form of a string with gettext context.
	 *
	 * @since 2.8.0
	 *
	 * @param string $translation Translated text.
	 * @param string $single      The text to be used if the number is singular.
	 * @param string $plural      The text to be used if the number is plural.
	 * @param int    $number      The number to compare against to use either the singular or plural form.
	 * @param string $context     Context information for the translators.
	 * @param string $domain      Text domain. Unique identifier for retrieving translated strings.
	 */
	$translation = apply_filters( 'ngettext_with_context', $translation, $single, $plural, $number, $context, $domain );

	/**
	 * Filters the singular or plural form of a string with gettext context for a domain.
	 *
	 * The dynamic portion of the hook name, `$domain`, refers to the text domain.
	 *
	 * @since 5.5.0
	 *
	 * @param string $translation Translated text.
	 * @param string $single      The text to be used if the number is singular.
	 * @param string $plural      The text to be used if the number is plural.
	 * @param int    $number      The number to compare against to use either the singular or plural form.
	 * @param string $context     Context information for the translators.
	 * @param string $domain      Text domain. Unique identifier for retrieving translated strings.
	 */
	$translation = apply_filters( "ngettext_with_context_{$domain}", $translation, $single, $plural, $number, $context, $domain );

	return $translation;
}

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