REGEX issue

  • Hi everybody.

    I’m trying to build a custom main menu, and I need to use a Regex, like this:

    $main_menu = wp_list_categories(‘title_li=&orderby=id&hide_empty=0&echo=0&depth=1’);
    preg_match_all(‘@<li class=”(?<c>.*?)”>.*?)”>(?<t>.*?)/\n@’, $main_menu, $cats);

    On my local server it runs succesfully, but online it returns this error:
    Compilation failed: unrecognized character after (?< at offset 14

    Somebody can help me?

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