I do the filter. There are fields where the filter goes through the array. In the url string, this array designation is generated here: http://standart.dev/site/sell?city[]=87&city[]=88&city[]=89&course_type=1&price_type=1
Where there are checkboxes - this is how it forms ..city[]=87&city[]=88..
How can url be made more seo-friendly? In general, what other symbols of the array designation in the url-line can be used ??