Question

我正在为我的网站制作一个简单的注册表单。在MAMP上测试它。使用ajax将注册信息发送到执行此代码的php文件：

<?php

include("connection.php");

$username = "";
$pw = "";

$errorMsg = "";

function test_input($data) {
  $data = trim($data);
  $data = stripslashes($data);
  $data = htmlspecialchars($data);
  return $data;
}

if ($_POST["submit"] == "Sign Up!")
{
    if(!($_POST["username"]))
        $errorMsg .= "You must enter a user name. <br />";
    else if(strlen($_POST["username"]) < 3 OR strlen($_POST["username"]) > 8)
        $errorMsg .= "You user name must be between 3 and 8 characters long.<br />";
    else if(!ctype_alnum($_POST["username"]))
        $errorMsg .= "Your user name can contain only letters & numbers. <br />";
    else   
        $username = test_input($_POST["username"]);


    if(!($_POST["pw"]))
        $errorMsg .= "You must enter a password. <br />";
    else if(strlen($_POST["pw"]) < 8 OR strlen($_POST["pw"]) > 16)
        $errorMsg .= "Your password must be between 8 and 16 characters long.<br />";
    else if(!$_POST["confirmpw"])
        $errorMsg .= "You must confirm your password.<br />";
    else if($_POST["confirmpw"] != $_POST["pw"])
        $errorMsg .= "Your password confirmation doesn't match.<br />";
    else
        $pw = test_input($_POST["pw"]);

    if(!$errorMsg)
    {
        $query = "SELECT * FROM `userinfo` WHERE `username` ='".$username."'";
        $result = mysqli_query($connection001, $query);
        if (mysqli_num_rows($result) > 0)
            $errorMsg = "There is another account registered with this username. Do you want to log in?";
        else
        {
            $query = "INSERT INTO `userinfo` (`username`, `password`) VALUES ('".$username."', '".$pw."')";
            mysqli_query($connection001, $query);
        }                      
    }

    $data = array("username" => $username, "errorMsg" => $errorMsg);       
    echo json_encode($data); 

}

?>

它似乎工作原因到目前为止我设法添加条目到我的表，但每次我这样做我也得到这个错误返回：

TypeError：field_id.match（...）为null

似乎它与MAMP如何管理其数据库有关...这是我应该关注的事情吗？如果是这样，你能否指出我可能的解决方案？

与Mamp数据库相关的错误

0 个答案: