菜鸟PHP $_SESSION['liuyanyzm']!==$_POST['yzm']比较时出错了
初学者PHP $_SESSION['liuyanyzm']!==$_POST['yzm']比较时出错了
echo "session:".$_SESSION['liuyanyzm'].'
';
echo "表单：".$_POST['yzm'];
if(isset($_POST['submit']) and $_POST['submit']=="提交"){
if($_SESSION['liuyanyzm']!==$_POST['yzm']){
echo '';
}
}
?>
搞不明白为什么$_SESSION['liuyanyzm']和$_POST['yzm']都能打印出来，但是为什么比较都是false呢？各位帮我看看，谢谢了！（初学者）
------解决方案--------------------
var_dump($_SESSION['liuyanyzm'], $_POST['yzm']);
贴出结果
------解决方案--------------------
显示页面与处理页面分开
------解决方案--------------------
没有看到 $_SESSION['liuyanyzm'] 在哪里赋值的
------解决方案--------------------
$_SESSION['liuyanyzm']和$_POST['yzm']类型不同，一个是int，一个string，所以肯定是false
改成这样试试
if($_SESSION['liuyanyzm']!=$_POST['yzm'])
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