Question

我的INSERT声明不起作用。受影响的行数受0影响。这是我的代码：

<?php

require_once('class.config.php');

class userActions{

    public $link;      

    function __construct(){
        $db_connection = new dbConnection();
        $this->link = $db_connection->connect();   
        return $this->link;
    }

    function registerUsers($username, $password, $ip_address){
        $query = $this->link->prepare("INSERT INTO users (user_name,password,ip_address) VALUES (?,?,?)");
        $values = array($username, $password, $ip_address);
        $query->execute($values);
        $counts = $query->rowCount();
        return $counts;
    }
}

$users = new userActions();
echo $users->registerUsers('bob', 'dave123','127.0.0.1');

?>

我做错了什么？

编辑：这是我的class.config.php：

class dbConnection{
protected $db_conn;
public $db_host = "localhost:8080";
public $db_user = "root";
public $db_pass = "";
public $db_name = "facebook";

function connect(){
    try{
    $this->db_conn = new PDO("mysql:host = $this->db_host; dbname = $this->db_name",
    $this->db_user, $this->db_pass);
    $this->db_conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    return $this->db_conn;    
    }

    catch(PDOException $e){
        return "MySQL error : " . $e->getMessage();
    }
}

}

Answer 1

将registerUsers功能代码更改为

如果您使用mysqli，请使用以下

function registerUsers($username, $password, $ip_address){
       $query = $this->link->prepare("INSERT INTO users (user_name,password,ip_address) VALUES (?,?,?)");
       $query->bind_param("sss", $username, $password, $ip_address);
       $query->execute();

}

修改

我看到你正在使用PDO。尝试像下面的任何人一样使用

function registerUsers($username, $password, $ip_address){ $query = $this->link->prepare("INSERT INTO users (user_name,password,ip_address) VALUES (:username,:password,:ip_address)"); $query->bindParam(':username', $username); $query->bindParam(':password', $password); $query->bindParam(':ip_address', $ip_address); $query->execute(); }

OR

function registerUsers($username, $password, $ip_address){ $query = $this->link->prepare("INSERT INTO users (user_name,password,ip_address) VALUES (:username,:password,:ip_address)"); $query->execute(array('username' => $username, 'password' => $password, 'ip_address' => $ip_address)); }

我更愿意使用bindParam，因为它是安全的，它取代了my_real_escape_string。

Answer 2

以下内容可以帮助您了解如何通过oop编程插入数据库

数据库类：

public static $con;

public static function connect($hostname , $username , $password , $database)
{
    self::$con = mysqli_connect($hostname , $username , $password , $database) or die('Error: '.mysqli_connect_error());
}
public static function disconnect()
{
    mysqli_close(self::$con);
}
public static function insert($sql , $values)
{
    $values = self::safeValues($values);
    $sql = self::$con->prepare($sql);
    mysqli_set_charset(self::$con , 'UTF8');
    self::bindValues($sql , $values);
    $save = $sql->execute();
    return $save;
}
public function safeValues($values = null)
{
    if($values != null)
    {
        for($i = 0 ; $i < count($values) ; $i++)
        {
            $values[$i] = trim($values[$i]);
            $values[$i] = strip_tags($values[$i]);
            mysqli_real_escape_string(self::$con , $values[$i]);
        }
    }
    return $values;
}
public function bindValues($sql, $values = null)
{
    if ($values != null)
    {
        // Generate the Type String (eg: 'issisd')
        $types = '';
        foreach($values as $value)
        {
            if(is_int($value))
                $types .= 'i';
            elseif (is_float($value))
                $types .= 'd';
            elseif (is_string($value))
                $types .= 's';
            else
                $types .= 'b';
        }
        // Add the Type String as the first Parameter
        $bind_names[] = $types;
        // Loop thru the given Parameters
        for ($i = 0 ; $i < count($values) ; $i++)
        {
            // Create a variable Name
            $bind_name = 'bind'.$i;
            // Add the Parameter to the variable Variable
            $$bind_name = $values[$i];
            // Associate the Variable as an Element in the Array
            $bind_names[] = &$$bind_name;
        }
        // Call the Function bind_param with dynamic Parameters
        call_user_func_array(array($sql,'bind_param') , $bind_names);
    }
    return $sql;
}

在您的家庭课程中，您可以像这样插入：

家庭班级：

DB::connect('localhost' , 'username' , 'password' , 'database');

DB::insert("INSERT INTO table(field1, field2) VALUES (? , ?)" , [ $val1 , $val2 ] );

我希望这对你有所帮助。

Answer 3

所以我通过在class.config.php中删除localhost:8080 127.0.0.1来解决我的代码。

如何使用面向对象的PHP将数据插入数据库

3 个答案: