Php 注意:未定义变量:obj in
当我准备Php 注意:未定义变量:obj in,php,mysql,class,object,Php,Mysql,Class,Object,当我准备$sql时,出现错误“注意:未定义变量:obj in..” member.php <?php require_once('database.php'); $obj = new Database; $obj->getConnection(); class Member{ private $username; private $userpassword; public function regist(){ if(isset($_POST['action'])&
$sql
时,出现错误“注意:未定义变量:obj in..
”
member.php
<?php
require_once('database.php');
$obj = new Database;
$obj->getConnection();
class Member{
private $username;
private $userpassword;
public function regist(){
if(isset($_POST['action'])&&$_POST['action']=='insert'){
try{
$sql = "INSERT INTO userData(username,password)VALUES(:username,:password)";
$stmh = $obj->prepare($sql);//the error occour here
$stmh -> bindValue('username',$_POST['username'],PDO::PARAM_STR);
$stmh -> bindValue('password',password_hash($_POST['userpassword'],PASSWORD_DEFAULT),PDO::PARAM_STR);
$stmh -> execute();
echo "登録しました<br>";
}catch(PDOExcetion $e){
echo "error ".$e->getMessage();
}
}
}
public function login(){
$sql = "SELECT * FROM userData WHERE username=:usrname";
$stmh =$obj->prepare($sql);//the error occour here
$stmh ->bindValue(':usrname',$_POST['username'],PDO::PARAM_STR);
$stmh->execute();
$row = $stmh->fetch(PDO::FETCH_ASSOC);
if($row['username'] == false){
echo"login fail";
exit;
}
$hash = $row['password'];
if (false === password_verify($_POST['userpassword'],$hash)){
echo"login fail";
exit;
}
}
}
在函数中添加
global$obj
,然后再添加任何内容。那么该变量在方法中超出了范围。请参阅:在类中定义变量您确实应该发布完整的错误消息,但是由于变量范围的原因,您的成员类中的$obj
两种情况都未定义$obj
已在您的类之外声明,因此对于类中未声明的任何内容exist@Rizier123看起来像是个骗局。@Memor-x谢谢,现在我犯了这个错误,这意味着什么?分析错误:语法错误,意外的“$obj”(T_变量),在第8行的C:\xampp\New folder\htdocs\todo\member.php中需要函数(T_函数)
<?php
class Database{
protected $pdo;
public function __construct()
{
$this->db_connect();
}
private function db_connect()
{
$servername = "localhost";
$username = "abc";
$password = "abc";
$dbname = "mydb";
try
{
$this->pdo = new PDO("mysql:host=$servername;dbname=$dbname", $username, $password);
$this->pdo->setAttribute(PDO::ATTR_ERRMODE,PDO::ERRMODE_EXCEPTION);
$this->pdo->setAttribute(PDO::ATTR_EMULATE_PREPARES,false);
}catch(PDOException $e)
{
die("error connection ".$e->getMessage());
}
}
public function getConnection()
{
return $this->pdo;
}
}
?>