[Vince]

Really, just use an array instead of creating twenty separate variables.

PHP код:

in_array(needle, const haystack[], size = sizeof haystack, &index = 0)
{
    for(new i; i < size; i++)
    {
        if(haystack[i] == needle)
        {
            index = i;
            return true;
        }
    }
        
    return false;
}