Get ACF image with alt text (and add classes)

get_acf_image_with_alt

// Load in ACF image with alt text
function get_acf_image_with_alt( $imagefield, $postID, $imagesize = 'full', $subfield = false, $class = '' ) {
	if ( $subfield == true ) {
		$imageID = get_sub_field( $imagefield, $postID );
	}
	else {
		$imageID = get_field( $imagefield, $postID );
	}
	$image = wp_get_attachment_image_src( $imageID, $imagesize );
	$alt_text = get_post_meta( $imageID , '_wp_attachment_image_alt', true );
	return '<img src="' . $image[0] . '" class="' . $class . '" alt="' . $alt_text . '" />';
}