Verbindung einzugehen Unten ist mein Beispielcode für mein PHP-Programm, und meine Datenbank wurde bereits erstellt.Versuchen, von iOS zu MySQL-Datenbank mit PHP (HTTP POST)
createteam.php:
<?php
$response = array();
if($_SERVER['REQUEST_METHOD']=='POST'){
//getting values
$teamName = $_POST['name'];
$memberCount = $_POST['member'];
//including the db operation file
require_once '../includes/DbOperation.php';
$db = new DbOperation();
//inserting values
if($db->createTeam($teamName,$memberCount)){
$response['error']=false;
$response['message']='Team added successfully';
}else{
$response['error']=true;
$response['message']='Could not add team';
}
}else{
$response['error']=true;
$response['message']='You are not authorized';
}
echo json_encode($response);
config.php:
<?php
define('DB_USERNAME', 'root');
define('DB_PASSWORD', '');
define('DB_HOST', 'localhost');
define('DB_NAME', 'iphone');
DbConnect.php:
<?php
class DbConnect
{
private $conn;
function __construct()
{
}
/**
* Establishing database connection
* @return database connection handler
*/
function connect()
{
require_once 'Config.php';
// Connecting to mysql database
$this->conn = new mysqli(DB_HOST, DB_USERNAME, DB_PASSWORD, DB_NAME);
// Check for database connection error
if (mysqli_connect_errno()) {
echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
// returing connection resource
return $this->conn;
}
}
DbOperation.php:
<?php
class DbOperation
{
private $conn;
function __construct()
{
require_once dirname(__FILE__) . '/Config.php';
require_once dirname(__FILE__) . '/DbConnect.php';
// opening db connection
$db = new DbConnect();
$this->conn = $db->connect();
}
//Function to create a new user
public function createTeam($name, $memberCount)
{
$stmt = $this->conn->prepare("INSERT INTO team(name, member) values(?, ?)");
$stmt->bind_param("si", $name, $memberCount);
$result = $stmt->execute();
$stmt->close();
if ($result) {
return true;
} else {
return false;
}
}
}
Jedoch, wenn ich HTTP-POST-Methode verwenden, mit Postman in Chrome heißt es, diese
Notice: Undefined index: name in D:\xampp\htdocs\TestServ\api\createteam.php on line 9
Notice: Undefined index: member in D:\xampp\htdocs\TestServ\api\createteam.php on line 10
Warning: mysqli::__construct(): (HY000/1049): Unknown database 'iphone' in D:\xampp\htdocs\TestServ\includes\DbConnect.php on line 20 Failed to connect to MySQL: Unknown database 'iphone' Warning: mysqli::prepare(): Couldn't fetch mysqli in D:\xampp\htdocs\TestServ\includes\DbOperation.php on line 20
Fatal error: Uncaught Error: Call to a member function bind_param() on null in D:\xampp\htdocs\TestServ\includes\DbOperation.php:21 Stack trace: #0 D:\xampp\htdocs\TestServ\api\createteam.php(18): DbOperation->createTeam(NULL, NULL) #1 {main} thrown in D:\xampp\htdocs\TestServ\includes\DbOperation.php on line 21
Was bedeutet das, und was soll ich ändern?
Mögliche Duplikate von [PHP: "Notice: Undefinierte Variable" und "Notice: Undefined Index"] (http://stackoverflow.com/questions/4261133/php-notice-undefined-variable-and-notice-undefined- Index) Beginnen Sie mit dieser Frage. – Ohgodwhy