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我正在尝试创建一个程序来创建随机注册密钥并将其存储在数据库中。如果用户/客户已经有一个注册码，它会在单击“其他”时在文本框中显示存储在数据库中的密钥，它会生成一个新的密钥并将其存储在数据库中。问题是我无法将密钥存储在数据库中。我的代码是：

<?php

if (isset($_POST['keygen'])){
$customer_no = $_POST['customer_no'];
$result = mysql_query("SELECT * FROM customer WHERE customer_no = '$customer_no'");
$row = mysql_fetch_array($result);
$keyString = $row['key'];
if($keyString == ""){
$keyString = generateRandomString();
$query = "UPDATE 'customer' SET key ='$keyString' WHERE customer_no = '$customer_no'";
mysql_query($query);
echo $keyString;
}

else{
echo $keyString;
}   

 }

function  generateRandomString($length = 8) {

$characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
$randomString = '';
for ($i = 0; $i < $length; $i++) {
    $randomString .= $characters[rand(0, strlen($characters) - 1)];
}
return $randomString;
}

?>

这是我的 HTML：

    <div id="content" class="box2">
        <div class="login">
        <form action="" method="post" style="margin:12px;">
        <table class="nostyle">
        <tr>
        <td align="center">
        <label style="font-size:16px;"><strong>Customer ID: </strong></label>
        <select name="customer_no">
    <?php $result_customer= mysql_query('SELECT customer_no FROM customer ORDER BY customer_no'); ?>
    <?php while($row_customer= mysql_fetch_assoc($result_customer)) { ?>
    <option <?php if ($row_customer['customer_no']=='') { ?> selected="selected"<?php } ?>> <?php echo htmlspecialchars($row_customer['customer_no']); ?> </option>
    <?php } ?>
  </select>
        </td>
        </tr>
        <tr>
        <td align="center"><label style="font-size:16px;"><br /><strong>Register Key: </strong></label>
        <input type="text" id="key" class="input-text" name="key" size="20" align="middle" value = " <?=$row["key"];?>"></td>
        </tr>
        <td align="center"><br /><input type="submit" id="keygen" class="input-submit" name="keygen" value="Generate" onclick=""/>
        </td>
        </tr>
        </table>
        </form>
        </div>
     </div>

我是新手，对代码不太确定。请帮忙！

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1 回答 1

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你首先要做mysqli_connect。查看http://php.net。您还应该使用 mysqli_ 函数，因为 mysql_ 函数已被新版本的 php 弃用。

于 2013-08-23T12:45:08.003 回答