我真的不知道该搜索什么来修复我的灵魂，我得到了这个php代码：
if($_SESSION['loggedIn'] == false){
include("mobilForm.php");
}
当包含我的表单时，我需要放置一个absoulte元素，例如top=55%。但是当我登录并且表单消失时，元素仍然位于top=55%(显然(。php中是否可以将位置更改为top=35%？
Ex？
if($_SESSION['loggedIn']==false){
include("mobilForm.php");
$("div").css("top", "35%");
}
登录：
<?php
include('connect.php');
$username = $_POST['username'];
$password = $_POST['password'];
$query = "SELECT * FROM users WHERE username = '".$username."'";
$result = $con->query($query);
while($row = $result->fetch_object())
{
if (strcasecmp($username, $row->username) === 0)
{
$checkPassword = password_verify($password,$row->password);
if($checkPassword ){
$_SESSION['loggedIn'] = true;
$_SESSION['user'] = $row->username;
$_SESSION['admin'] = $row->admin;
$_SESSION['userpic'] = $row->userpic;
$_SESSION['displayname'] = $row->displayname;
$_SESSION['id'] = $row->id;
$now = date("H:i");
$id = $_SESSION['id'];
$sql = $con->prepare('UPDATE users SET online =? WHERE id = ?');
$sql->bind_param("si",$now,$id);
$sql->execute();
$sql->close();
$con->close();
header("Location:music.php?success");
exit();
}
else{
echo "<script>
alert('Do you even know your password?');
window.location.href='music.php?HAHA';
</script>";
}
}
}
?>
当前状态Css
body:not(.loggedIn) #searchBarN {
top: 65%;
}
body.loggedIn #searchBarN {
top: 35%;
}
html
<body <?php echo isset($_SESSION['loggedIn']) && $_SESSION['loggedIn'] == true ? 'id="searchBarN"' : ''; ?>>
您可以使用PHP将class添加到元素中。在本例中，类别loggedin被添加到body:
<body <?php echo isset($_SESSION['loggedIn']) && $_SESSION['loggedIn'] == true ? 'class="loggedin"' : ''; ?>
然后你可以在CSS:中设置你的元素样式
body:not(.loggedin) #yourform {
top: 55%;
}
body.loggedin #yourform {
top: 35%;
}