Toolbox Filter Example - Highlight WYSIWYG

toolbox_example_highlight_amsterdam_glass.php

<?php

add_filter( 'toolbox/helpers/get_acf_field/type=wysiwyg' , 'highlight_amsterdam_glass', 10, 5 );

function highlight_amsterdam_glass( $string, $field_object, $value, $atts, $postid ) {
			$regex = '/((?i)\b' . 'amsterdam glass' . '\b)/m';

			return preg_replace( $regex , '<span style="background-color:##b2af01;color:#fff;padding-left:5px;padding-right:5px;">'.'$1'.'</span>', $string);
}