我创建了一个小类来处理我的 MySql 查询。
但是,现在我正在尝试获取最后插入的 id 的值,但这对我来说并不适用
如果我在类中的 processQuery 方法使用任何查询(如插入/更新/删除)执行准备语句
我已经添加了这一行 $this->lastInsertId = $this->pdo->lastInsertId; 它应该给我最后插入的 Id 并将其存储在名为 $lastInsertId 的公共变量中,然后我可以从我的外部代码访问它。
如何获取最后插入的 ID 以使用此类?
谢谢
这是我的课
<?php
class connection {
private $connString;
private $userName;
private $passCode;
private $server;
private $pdo;
private $errorMessage;
public $lastInsertId;
private $pdo_opt = array (
PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC
);
function __construct($dbName, $serverName = 'localhost'){
//sets credentials
$this->setConnectionCredentials($dbName, $serverName);
//start the connect
$this->startConnection();
}
function startConnection(){
$this->pdo = new PDO($this->connString, $this->userName, $this->passCode, $this->pdo_opt);
if( ! $this->pdo){
$this->errorMessage = 'Failed to connect to database. Please try to refresh this page in 1 minute. ';
$this->errorMessage .= 'However, if you continue to see this message please contact your system administrator.';
}
}
//this will close the PDO connection
public function endConnection(){
$this->pdo = null;
}
//return a dataset with the results
public function getDataSet($query, $data = NULL)
{
$cmd = $this->pdo->prepare( $query );
$cmd->execute($data);
return $cmd->fetchAll();
}
//return a dataset with the results
public function processQuery($query, $data = NULL)
{
$cmd = $this->pdo->prepare( $query );
$this->lastInsertId = $this->pdo->lastInsertId;
return $cmd->execute($data);
}
//this where you need to set new server credentials with a new case statment
function setConnectionCredentials($dbName, $serv){
switch($serv){
case 'BLAH':
$this->connString = 'mysql:host='.$serv.';dbname='.$dbName.';charset=utf8';
$this->userName = 'BLAH';
$this->passCode = 'BLAH';
break;
default:
$this->connString = 'mysql:host='.$serv.';dbname='.$dbName.';charset=utf8';
$this->userName = 'BLAH2';
$this->passCode = 'BLAH2';
break;
}
}
}
?>