小编alb*_*can的帖子

我想在PHP中减去两个日期

例如:

$date1 = 08/16/2013;
$date2 = 08/23/2013;
$answer = date2 - date1;

$答案应该是7,我该怎么做？非常感谢

即时通讯使用Twitter bootstrap为我的响应,我希望导航将成为一个按钮,当它在移动设备上观看时,小屏幕显示的按钮,但当我点击它时,它不会滑动显示我的锚点这里是我的代码

<header class="navbar navbar-static-top marginTop">
    <div class=" col-md-6 ">
        <button class="navbar-toggle" type="button" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
            <span class="sr-only">Toggle navigation</span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
            <span class="icon-bar"></span>
        </button>
        <img src="http://localhost/wordpress/wp-content/uploads/2014/03/logo.png" alt="" />
    </div>

    <div class="col-md-6">
        <nav class="collapse navbar-collapse marginTopInNavBar">
            <ul class="nav navbar-nav parentUl text-center floatLeft" >
                <li class="dropdown parentNavLi floatLeft">
                    <a href="#" class="parentNavA floatLeft" id="first">Compare Prices</a>
                    <img src="http://localhost/wordpress/wp-content/uploads/2014/03/shadowNav.png" alt="" />
                </li>

                <li class="dropdown parentNavLi floatLeft">
                    <a href="#" data-toggle="dropdown" class="dropdown-toggle parentNavA floatLeft">Buying Guides</a>
                    <img src="http://localhost/wordpress/wp-content/uploads/2014/03/shadowNav.png" alt="" />
                    <ul class="dropdown-menu childUl text-left floatLeft" id="menu1">
                        <li …