在PrestaShop中生成link_rewrite变量

I'm writing a product importer for PrestaShop. This importer should connect to server using SOAP API.

Generally everything works fine, but I need to generate a string for link_rewrite column in ps_product_lang table to insert it correctly. The problem is that imported string, which I want to use for generating linkRewrite parameter contains Polish sings like ó,ł,ż etc.

I found a method called updateLinkRewrite() which generates SEO friendly URL and replace Polish chars on English chars in admin page but this is a JS method.

Does a similar method to updateLinkRewrite() exist in PrestaShop admin controllers in PHP-part?

Actually there is a simple solution in PHP inside Prestashop :

Tools::str2url($string);

Works since 1.5 and still in 1.7.