Question

我正在进行PHP身份验证，我想确保用户是否已连接如果用户没有连接到登录时出现的连接注册，否则名称将显示在首页几乎退出链接这是我的代码

    <div id="pl_header" class="container_24 NormalTopPadding">
            <ul class="acc_nav">
                        <div class="jaccess">
                            <?php if($_SESSION['niv'] != 0){?>
                                <li><a href="login.php"><span>Login</span></a></li>                     
                                <li><a href="" data-reveal-id="myModal_197"><span>Sign up</span></a></li>
                            <?php }  else {?>
                                <li><span class="user">Welcome <strong><? echo ($_GET['login']);?></strong></span></li>
                                <li id="un-login"><a href="#"><span>Logout</span></a></li>
                            <?php }?>    
                        </div>
            </ul>
    </div>

当我想访问此pags时，它会显示“Undefined variable：_SESSION”。我该怎么做才能解决这个问题？

Answer 1

最后我遇到了问题，下面的代码对你的pdo连接没有必要改变默认的pdo类

public function query($query) {
    $this->stmt = $this->dbh->prepare($query);
}

public function bind($param, $value, $type = null) {
    if (is_null($type)) {
        switch (true) {
            case is_int($value):
                $type = PDO::PARAM_INT;
                break;
            case is_bool($value):
                $type = PDO::PARAM_BOOL;
                break;
            case is_null($value):
                $type = PDO::PARAM_NULL;
                break;
            default:
                $type = PDO::PARAM_STR;
        }
    }
    $this->stmt->bindValue($param, $value, $type);
}

public function execute() {
    return $this->stmt->execute();
}

public function resultset() {
    $this->execute();
    return $this->stmt->fetchAll(PDO::FETCH_ASSOC);
}

public function single() {
    $this->execute();
    return $this->stmt->fetch(PDO::FETCH_ASSOC);
}

public function rowCount() {
    return $this->stmt->rowCount();
}

public function lastInsertId() {
    return $this->dbh->lastInsertId();
}

public function beginTransaction() {
    return $this->dbh->beginTransaction();
}

public function endTransaction() {
    return $this->dbh->commit();
}

public function cancelTransaction() {
    return $this->dbh->rollBack();
}

public function debugDumpParams() {
    return $this->stmt->debugDumpParams();
 }

使用以下代码，它将正常工作..

<?php

class Connexion {

private $host = "localhost";
private $user = "root";
private $pass = "";
private $dbname = "annonce";
public $dbh;
private $stmt;

public function __construct() {
        $dsn = 'mysql:host=' . $this->host . ';dbname=' . $this->dbname;
        // Set options
        $options = array(
            \PDO::ATTR_PERSISTENT => true,
            \PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION
        );
        // Create a new PDO instanace
        try {
            $this->dbh = new \PDO($dsn, $this->user, $this->pass, $options);

        }catch (\PDOException $e) {
            echo "Connexion Error: " . $e->getMessage();
            exit;
        }
}

public function Connecton(){
            return $this->dbh;  
}

}
?>

<?php

$c = new Connexion();
$c = $c->Connecton();
    $results = $c->query("select poste,client,type_contrat,desc_annonce from annonce ")->fetchAll();
    ?>
     <div class="Joblist">
      <?php foreach($results as $r) { ?>
            <p class="Title">
              <span class="Ref">xxxx</span>
              <a href="details.php"><?php echo($r['poste']); ?></a>
            </p>
            <p class="Date"><span class="Fright"><?php echo($r['type_contrat']); ?></span>
             <span><a href="sector.php" class="Sectorbtn"><?php echo($r['client']); ?></a>  </span></p>
            <p><?php echo($r['desc_annonce']); ?></p>
            <p class="More"><a href="details.php">Voir plus</a></p>
      <?php }?>
     </div>

Answer 2

使用fetchAll()向用户query()获取所需数据我使用以下代码编辑了您的代码。

$c = new Connexion();
    $results = $c->query("select poste,client,type_contrat,desc_annonce from annonce ")->fetchAll();
     <div class="Joblist">
      <?php foreach($results as $r) { ?>
            <p class="Title">
              <span class="Ref">xxxx</span>
              <a href="details.php"><?php echo($r['poste']); ?></a>
            </p>
            <p class="Date"><span class="Fright"><?php echo($r['type_contrat']); ?></span>
             <span><a href="sector.php" class="Sectorbtn"><?php echo($r['client']); ?></a>  </span></p>
            <p><?php echo($r['desc_annonce']); ?></p>
            <p class="More"><a href="details.php">Voir plus</a></p>
      <?php }?>
     </div>

我希望这会对你有所帮助。

感谢。

根据连接状态更改显示

2 个答案: