[FNC] GetDateAsTimestamp (GMT +2)

/*
        By Johurt, 2014/10/01
    mktime ( http://wiki.sa-mp.com/wiki/Useful_Functions#mktime ) function analog
*/
stock GetDateAsTimestamp(yy, mm, dd, hh, mins, secs) // GMT +2 (Vilnius)
{
    new timestamp, metu_skirtumas = yy - 1970, c, menesio_dienos[12];
    timestamp = (metu_skirtumas * 31536000) + ((dd-1) * 86400) + ((hh-3) * 3600) + (mins * 60) + secs;
    if(mm > 1)
    {
            menesio_dienos = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
        for(c = 0; c < mm-1; c++)
        {
            timestamp += (menesio_dienos[c] * 86400);
            }
    }
    for(c = 0; c < metu_skirtumas; c++)
    {
        if((((1970 + c + 1) % 4 == 0) && ((1970 + c + 1) % 100 != 0)) || ((1970 + c + 1) % 400 == 0)) timestamp += 86400;
    }
    return timestamp;
}