Question

这是一个愚蠢的代码，应该使用会话来禁用或不禁用按钮。页面加载正确，但即使单击按钮也不会调用函数“fun（）”。为什么呢？

<html>
<head>
</head>
<body>
<?php
    session_start();
    if(isset($_SESSION['session']))
    {
        echo "<button type='submit' disabled'>button disabled</button>";
    }
    else
    {
        echo "<button type='submit' onclick='fun()'>button enabled</button>";
    }
    function fun(){
        echo "sdagasdgasdg";
        /*$host = "myhost";
        $username = "myuser";
        $password = "mypass";
        $db_name = "mydb";
        $tbl_name = "mytbl";

        mysql_connect("$host", "$username", "$password")or die("cannot connect"); 
        mysql_select_db("$db_name")or die("cannot select DB");
        $sql = mysql_query("SELECT * FROM $tbl_name");
        $row = mysql_fetch_array($sql);
        $value = $row['column'];
        $value++;
        $sqlrefresh = mysql_query("UPDATE $tbl_name SET column = $value");
        mysqli_close();*/
        $_SESSION["session"] = "something";
    }
?>
</body>
</html>

感谢您的帮助..

为什么功能不起作用？

0 个答案: