wp_install_language_form() WordPress Function

function wp_install_language_form( $languages ) {
	global $wp_local_package;

	$installed_languages = get_available_languages();

	echo "<label class='screen-reader-text' for='language'>Select a default language</label>\n";
	echo "<select size='14' name='language' id='language'>\n";
	echo '<option value="" lang="en" selected="selected" data-continue="Continue" data-installed="1">English (United States)</option>';
	echo "\n";

	if ( ! empty( $wp_local_package ) && isset( $languages[ $wp_local_package ] ) ) {
		if ( isset( $languages[ $wp_local_package ] ) ) {
			$language = $languages[ $wp_local_package ];
			printf(
				'<option value="%s" lang="%s" data-continue="%s"%s>%s</option>' . "\n",
				esc_attr( $language['language'] ),
				esc_attr( current( $language['iso'] ) ),
				esc_attr( $language['strings']['continue'] ? $language['strings']['continue'] : 'Continue' ),
				in_array( $language['language'], $installed_languages, true ) ? ' data-installed="1"' : '',
				esc_html( $language['native_name'] )
			);

			unset( $languages[ $wp_local_package ] );
		}
	}

	foreach ( $languages as $language ) {
		printf(
			'<option value="%s" lang="%s" data-continue="%s"%s>%s</option>' . "\n",
			esc_attr( $language['language'] ),
			esc_attr( current( $language['iso'] ) ),
			esc_attr( $language['strings']['continue'] ? $language['strings']['continue'] : 'Continue' ),
			in_array( $language['language'], $installed_languages, true ) ? ' data-installed="1"' : '',
			esc_html( $language['native_name'] )
		);
	}
	echo "</select>\n";
	echo '<p class="step"><span class="spinner"></span><input id="language-continue" type="submit" class="button button-primary button-large" value="Continue" /></p>';
}