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 '
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