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无需单击按钮即可运行的 PHP 代码

转载 作者：搜寻专家 更新时间：2023-10-30 20:35:44 25 4
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我在一个使用 PHP 的网站上工作，我想在单击按钮时更新数据库。但出于某种原因，无论何时加载页面，代码都会运行，我不希望这样，因为它真的会弄乱整个代码。如何停止脚本自动运行？

<?php
    ob_start();
    session_start();
    include_once 'dbconnect.php';


    // if session is not set this will redirect to login page
    if( !isset($_SESSION['user']) ) {
        header("Location: index.php");
        exit;
    }

    $res=mysql_query("SELECT * FROM users WHERE userId=".$_SESSION['user']);
    $userRow=mysql_fetch_array($res);
    //Here is where the script is
    if ( isset($_POST['send']) ) {
        if ( ! empty($_POST['sender'])){
            $name = $_POST['sender'];
        }
        if ( ! empty($_POST['reciever'])){
            $name = $_POST['reciever'];
        }

        $query = "UPDATE users SET userCoins = userCoins + 1  WHERE userName='Morgan'";
        $res = mysql_query($query);
        if ($res) {
            $error = "Success!";
        } else {
            $error = "Something Went Wrong!";
        }
    }
?>
<!DOCTYPE html>
<html>
    <?php header("Access-Control-Allow-Origin: http://www.py69.esy.es"); ?>
    <head>
        <title>ServiceCoin</title>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
        <link rel="stylesheet" href="assets/css/bootstrap.min.css" type="text/css"  />
        <link rel="stylesheet" href="scripts/home/index.css" />
    </head>
    <body>
        <ul>
            <li><a href="#" class="a">ServiceCoin.com(image)</a></li>
            <li><a href="logout.php?logout" class="a">Sign Out</a></li>
            <li><a href="#" class="a">Contact</a></li>
            <li><a href="#" class="a">Get Service Coins</a></li>
            <li><a href="#" class="a">News</a></li>
            <li><a href="settings.php" class="a">Settings</a></li>
            <li><a href="#" class="a">Referrals</a></li>
            <li><a href="service.php" class="a">Services</a></li>
            <li><a href="home.php" class="a">Home</a></li>
        </ul>
        <br /><br />
        <center>
        <h3>Welcome, <?php echo $userRow['userName']; ?>. You Currently Have <span id="services"><?php echo $userRow['userCoins']; ?></span> Service Coins</h3>
        <form method="post" action="<?php echo htmlspecialchars($_SERVER['PHP_SELF']); ?>" autocomplete="off">
            <div class="form-group">
                <div class="input-group">
                    <span class="input-group-addon"><span class="glyphicons glyphicons-lock"></span></span>
                    <input type="text" name="sender" class="form-control" placeholder="Enter Your Wallet Key" value="<?php echo $row['userCoins']; ?>" maxlength="15" />
                    <span class="text-danger"><?php echo $error; ?></span>
                </div>
                <div class="input-group">
                    <span class="input-group-addon"><span class="glyphicons glyphicons-lock"></span></span>
                    <input type="text" name="reciever" class="form-control" placeholder="Enter The Recievers Wallet Key" value="<?php echo $row['userCoins']; ?>" maxlength="15" />
                    <span class="text-danger"><?php echo $error; ?></span>
                </div>

            </div>
            <div class="form-group">
                <button type="submit" class="btn btn-block btn-primary" name="send">Sign Up</button>
            </div>
        </form>
        </center>
    </body>
</html>
<?php ob_end_flush(); ?>

更新

我的页面现在完全是白色的。

<?php
    ob_start();
    session_start();
    include_once 'dbconnect.php';

    if(!isset($_SESSION['user'])) {
        header("Location: index.php");
        exit;
    }

    $condition = empty($_POST['sender']) || empty($_POST['reciever']);
    if ($condition) {
        die; // if your post data is empty PHP will no longer be executed
    }

    $res= "SELECT * FROM users WHERE userId=".$_SESSION['user'];
    $mysqli->query($con, $res); // you are doing nothing with it in your code, why?
    $name = $_POST['sender'];       
    $name = $_POST['reciever'];

    $query = "UPDATE users SET userCoins = userCoins + 1  WHERE userName='Morgan'";
    $res = $mysqli->query($con, $query);
    if ($res) {
       $error = "Success!";
    } else {
       $error = "Something Went Wrong!";
    }
?>
<!DOCTYPE html>
<html>
    <?php header("Access-Control-Allow-Origin: http://www.py69.esy.es"); ?>
    <head>
        <title>ServiceCoin</title>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
        <link rel="stylesheet" href="assets/css/bootstrap.min.css" type="text/css"  />
        <link rel="stylesheet" href="scripts/home/index.css" />
    </head>
    <body>
        <ul>
            <li><a href="#" class="a">ServiceCoin.com(image)</a></li>
            <li><a href="logout.php?logout" class="a">Sign Out</a></li>
            <li><a href="#" class="a">Contact</a></li>
            <li><a href="#" class="a">Get Service Coins</a></li>
            <li><a href="#" class="a">News</a></li>
            <li><a href="settings.php" class="a">Settings</a></li>
            <li><a href="#" class="a">Referrals</a></li>
            <li><a href="service.php" class="a">Services</a></li>
            <li><a href="home.php" class="a">Home</a></li>
        </ul>
        <br /><br />
        <center>
        <h3>Welcome, <?php echo $userRow['userName']; ?>. You Currently Have <span id="services"><?php echo $userRow['userCoins']; ?></span> Service Coins</h3>
        <form method="post" action="<?php echo htmlspecialchars($_SERVER['PHP_SELF']); ?>" autocomplete="off">
            <div class="form-group">
                <div class="input-group">
                    <span class="input-group-addon"><span class="glyphicons glyphicons-lock"></span></span>
                    <input type="text" name="sender" class="form-control" placeholder="Enter Your Wallet Key" value="<?php echo $row['userCoins']; ?>" maxlength="15" />
                    <span class="text-danger"><?php echo $error; ?></span>
                </div>
                <div class="input-group">
                    <span class="input-group-addon"><span class="glyphicons glyphicons-lock"></span></span>
                    <input type="text" name="reciever" class="form-control" placeholder="Enter The Recievers Wallet Key" value="<?php echo $row['userCoins']; ?>" maxlength="15" />
                    <span class="text-danger"><?php echo $error; ?></span>
                </div>

            </div>
            <div class="form-group">
                <button type="submit" class="btn btn-block btn-primary" name="send">Sign Up</button>
            </div>
        </form>
        </center>
    </body>
</html>
<?php ob_end_flush(); ?>

最佳答案

你应该使用 MySQLi。关于why not mysql_* 你可以阅读here

解决方案

您的代码可能如下所示:

$mysqli = new mysqli("localhost", "my_user", "my_password", "table_name"); // here you will need your connection data, you can store it in dbconnect.php.

// if session is not set this will redirect to login page    
if(!isset($_SESSION['user'])) {
    header("Location: index.php");
    exit;
}

$condition = empty($_POST['sender']) || empty($_POST['reciever']);
if (!$condition) {
    $res= "SELECT * FROM users WHERE userId=".$_SESSION['user'];
    $mysqli->query($res); // you are doing nothing with it in your code, why?
    $name = $_POST['sender'];       
    $reciever = $_POST['reciever'];

    $query = "UPDATE users SET userCoins = userCoins + 1  WHERE userName='Morgan'";
    $res = $mysqli->query($query);
    if ($res) {
        $error = "Success!";
    } else {
        $error = "Something Went Wrong!";
        echo "Error: ".$mysqli->error; // here you can check your errors
    }
}

手动

关于 MySQLi 的更多信息可以在 PHP Manual 中找到

关于无需单击按钮即可运行的 PHP 代码，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/40595165/

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