how to put both the logo and the title of the site ?

I just tried the code, the site puts this in error, here is what I put:

/**
* Add a title tag to the logo
*/
function my_custom_logo() {

// The logo
$custom_logo_id = get_theme_mod( ‘custom_logo’ );

// If has logo
if ( $custom_logo_id ) {

// Attr
$custom_logo_attr = array(
‘class’ => ‘custom-logo’,
‘itemprop’ => ‘logo’,
);

// Image alt
$image_alt = get_post_meta( $custom_logo_id, ‘_wp_attachment_image_alt’, true );
if ( empty( $image_alt ) ) {
$custom_logo_attr[‘alt’] = get_bloginfo( ‘name’, ‘display’ );
}

// Get the image
$html = sprintf( ‘%3$s‘,
esc_url( home_url( ‘/’ ) ),
esc_html( get_bloginfo( ‘name’ ) ),
wp_get_attachment_image( $custom_logo_id, ‘full’, false, $custom_logo_attr )
);

}

// If no logo is set but we’re in the Customizer, leave a placeholder (needed for the live preview).
elseif ( is_customize_preview() ) {
$html = sprintf( ‘‘,
esc_url( home_url( ‘/’ ) )
);
}

// Return
return $html;

}
add_filter( ‘get_custom_logo’, ‘my_custom_logo’ );

I put it without modifying anything knowing little about php.

Regards
DB