PHP日期

function index(){
    $s_date1=date('Y-m-01', strtotime(date("Y-m-d")));
    $s_date2=date('Y-m-d', strtotime("$s_date1 +1 month -1 day"));
    $this->s_date="$s_date1 - $s_date2";
    $this->display();
}

function data(){
    if($s_date=I('s_date')){
        $s_date=str2arr($s_date,' - ');
        $sql.=" and order_date between '$s_date[0]' and '$s_date[1]'";
    }
}

<input name="s_date" id="s_date" value="{$s_date}" readonly class="layui-input">

laydate.render({
    elem:'#s_date'
    ,range:true
})