google font enqueue for wordpress theme and plugins

google font enqueue.php

<?php 
wp_enqueue_style( 'prefix-google-font', finestudio_get_google_font_url() );

google-fonts.php

<?php 

// Google Fonts
function finestudio_get_google_font_url() {
	$font_url = '';

	/* Translators: If there are characters in your language that are not
	* supported by Arizonia, translate this to 'off'. Do not translate
	* into your own language.
	*/
	$Lato = _x( 'on', 'Lato font: on or off', 'massive' );

	/* Translators: If there are characters in your language that are not
	* supported by Source Sans Pro, translate this to 'off'. Do not translate
	* into your own language.
	*/
	$Montserrat = _x( 'on', 'Montserrat font: on or off', 'massive' );

	if ( 'off' !== $arizonia || 'off' !== $Montserrat ) {
		$font_families = array();

		if ( 'off' !== $Lato ) {
			$font_families[] = 'Lato';
		}

		if ( 'off' !== $Montserrat ) {
			$font_families[] = 'Montserrat:300,300i,400,400i,500,500i,600,600i,700';
		}

		$query_args = array(
			'family' => urlencode( implode( '|', $font_families ) ),
			'subset' => urlencode( 'latin,latin-ext' ),
		);

		$font_url = add_query_arg( $query_args, '//fonts.googleapis.com/css' );
	}

	return esc_url_raw( $font_url );
}