Question

我一直在努力让我的输入单选按钮在编辑帐户页面中设置预设值。我希望扮演'＃角色＆＃39;从我的数据库中的值查看编辑帐户页面时检查输入。

编辑：我想在编辑帐户页面上检查用户先前选择的单选按钮，因此请使用数据库中的值来选择应检查哪个输入。

        // Initial query parameter values 
                $query_params = array( 
            ':rank' => $_POST['rank'],
            ':role' => $_POST['role'], 
            ':user_id' => $_SESSION['user']['id']
        );







        // If the user is changing their password, then we need parameter values 
        // for the new password hash and salt too. 
        if($password !== null) 
        { 
            $query_params[':password'] = $password; 
            $query_params[':salt'] = $salt; 
        } 

        // Note how this is only first half of the necessary update query.  We will dynamically 
        // construct the rest of it depending on whether or not the user is changing 
        // their password. 
        $query = "UPDATE users SET rank = :rank";
        $query .= ", role = :role";


         // If the user is changing their password, then we extend the SQL query 
        // to include the password and salt columns and parameter tokens too. 
        if($password !== null) 
        { 
            $query .= " 
                , password = :password 
                , salt = :salt 
            "; 
        } 

        // Finally we finish the update query by specifying that we only wish 
        // to update the one record with for the current user. 
        $query .= " 
            WHERE 
                id = :user_id 
        "; 

        try 
        { 
            // Execute the query 
            $stmt = $db->prepare($query); 
            $result = $stmt->execute($query_params); 
        } 
        catch(PDOException $ex) 
        { 
            // Note: On a production website, you should not output $ex->getMessage(). 
            // It may provide an attacker with helpful information about your code.  
            die("Failed to run query: " . $ex->getMessage()); 
        } 

        // Now that the user's rank has changed, the data stored in the $_SESSION 
        // array is stale; we need to update it so that it is accurate. 
        $_SESSION['user']['rank'] = $_POST['rank'];  



        // This redirects the user back to the members-only page after they register 
        header("Location: private.php"); 


        die("Redirecting to private.php"); 
    } 

?> 
<h1>Edit Account</h1> 
<form action="edit_account.php" method="post"> 
    battletag:<br /> 
    <b><?php echo htmlentities($_SESSION['user']['battletag'], ENT_QUOTES, 'UTF-8'); ?></b> 
    <br /><br /> 
    Preferred Role:<br />
    <input type="radio" name="role" value="Assasin">Assasin 
    <input type="radio" name="role" value="Warrior">Warrior 
    <input type="radio" name="role" value="Specialist">Specialist
    <input type="radio" name="role" value="Support">Support
    <br /><br />
    Rank<br /> 
    <input type="text" name="rank" value="<?php echo htmlentities($_SESSION['user']['rank'], ENT_QUOTES, 'UTF-8'); ?>" /> 
    <br /><br /> 
    Password:<br /> 
    <input type="password" name="password" value="" /><br /> 
    <i>(leave blank if you do not want to change your password)</i> 
    <br /><br /> 
    <input type="submit" value="Update Account" /> 
</form>

Answer 1

如果您有多个单选按钮，则可以创建一个返回选中的函数。

function is_checked($db_value, $html_value){
  if($db_value == $html_value){
    return "checked";
  }
  else{
    return "";
  }
}

并使用如下函数：

<input type="radio" name="role" value="Assasin" <?php echo is_checked($db_value, "Assasin"); ?> >Assasin 
<input type="radio" name="role" value="Warrior" <?php echo is_checked($db_value, "Warrior"); ?> >Warrior 
<input type="radio" name="role" value="Specialist" <?php echo is_checked($db_value, "Specialist"); ?> >Specialist
<input type="radio" name="role" value="Support" <?php echo is_checked($db_value, "Support"); ?> >Support

设置＆＃39;已检查＆＃39;从数据库无线电输入中获取值

1 个答案: