MoweMax

public function getDaysConst(){
    return [
        "Monday"    => 1 << 0,    // 00000001 (1)
        "Tuesday"   => 1 << 1,    // 00000010 (2)
        "Wednesday" => 1 << 2,    // 00000100 (4)
        "Thursday"  => 1 << 3,    // 00001000 (8)
        "Friday"    => 1 << 4,    // 00010000 (16)
        "Saturday"  => 1 << 5,    // 00100000 (32)
        "Sunday"    => 1 << 6,    // 01000000 (64)
    ];