php - PDO异常 SQLSTATE[23000] :in php

Question

我使用 PDo 和 OOP 来使用 xampp 将数据插入到数据库 mysql 中，但插入空值时出现错误， 这段sql代码注意id自动递增，它工作正常

     CREATE TABLE `consumer` (

    `Consumer_ID` int(8) NOT NULL,

    `FName` varchar(20) NOT NULL,

    `LName` varchar(20) NOT NULL,

    `Email` varchar(35) NOT NULL,

    `Passwords` varchar(255) NOT NULL,

    `Gender` char(1) NOT NULL,

    `Birth_Year` int(4) DEFAULT NULL,

    `City` varchar(20) NOT NULL,

    `Neighborhood` varchar(20) NOT NULL,

    `Mobile_Number` int(11) NOT NULL,

    `Contact_Preference` varchar(15) NOT NULL,

    `Status` char(1) DEFAULT 'a',

    `Longitude` float(10,6) DEFAULT NULL,

     `Latitude` float(10,6) DEFAULT NULL,

     `Join_Date` timestamp NULL DEFAULT CURRENT_TIMESTAMP,

     `Last_Login_Date` timestamp NULL DEFAULT NULL

      ) ENGINE=MyISAM DEFAULT CHARSET=latin1;

     ALTER TABLE `consumer`
     ADD PRIMARY KEY (`Consumer_ID`),
     ADD UNIQUE KEY `Email` (`Email`);
     ALTER TABLE `consumer`
     MODIFY `Consumer_ID` int(8) NOT NULL AUTO_INCREMENT;

这段与数据库连接的代码工作正常

    <?php
    class  dbconnection{
    Private $server = "localhost";
    Private $database = "*****";
    Private $userName = "*****";
    Private $password = "*****";
    public function connect()   
    {
    try{
        $db = new PDO("mysql:host=$this->server;dbname=$this->database", 
        $this->userName, $this->password);
        $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
        return $db;
    }
    catch(PDOException $e){
        echo "Connection failed: " . $e->getMessage();
    }
    }
    public function disconnect(){
    $db = null;
    return $db;
    }
    }
    ?>

消费者类，出现异常错误

    <?php
    require 'dbconnection.class.php';
    class consumer
    {
    Public function register($FName,$LName,$Email,$Passwords,$Gender,$Birth_Year,$City,$Neighborhood,$Mobile_Number,$Contact_Preference,$Longitude,$Latitude)
    {
    try 
    {
    $connection = new dbconnection;
    $db = $connection->connect();
    $Query = $db->prepare("INSERT INTO consumer(FName,LName,Email,Passwords,Gender,Birth_Year,City,Neighborhood,Mobile_Number,Contact_Preference,Longitude,Latitude) 
        VALUES (?,?,?,?,?,?,?,?,?,?,?,?)");
        $Query->bindParam(1,$Fname);
        $Query->bindParam(2,$Lname);
        $Query->bindParam(3,$Email);
        $Query->bindParam(4,$Password);
        $Query->bindParam(5,$Gender);
        $Query->bindParam(6,$Birth_Year);
        $Query->bindParam(7,$City);
        $Query->bindParam(8,$Neighborhood);
        $Query->bindParam(9,$Mobile_Number);
        $Query->bindParam(10,$Contact_Preference);
        $Query->bindParam(11,$Longitude);
        $Query->bindParam(12,$Latitude);
        $Query->execute();
        return $db->lastInsertId();
        $db = $connection->disconnect();
    } catch (PDOException $e) {
        exit($e->getMessage());
     }
     }
     }
     $test = new consumer;
     $test->register('ahmed','ahmed','ahmed','ahmed','4','2018','cairo','naser',01121980528,'now',5,9);
     ?>

Answer 1

小心变量。您将函数参数定义为 $FName,$LName，但在查询绑定(bind)中使用 $Fname,$Lname。

变量名称区分大小写。

$Passwords 和 $Password 也不同。