php類僅返回結果的第一行

Question

所以基本上我有一個數據庫表：

id，user_id，職業，年份，最高位置

我創建了一個類：

class WorkHistory {
    public $id;
    public $user_id;
    public $ocupation;
    public $years;
    public $highest_position;

    //construct work history based on user id
    public function __construct($id=null){
        $this->id = $id;
        WorkHistoryWrapper::getHistory($this);
    }

    //update user history
//    public function update(){
//        UserWrapper::updateHistory($this);
//    }
}


class WorkHistoryWrapper extends WorkHistory {
    //get user work history
    static public function getHistory($WorkHistory){
        global $mysqli;

        //get user info according to user id
        $WorkHistoryQuery = $mysqli->prepare("SELECT user_id, ocupation, years, highest_position
        FROM work_history
      WHERE user_id = ? LIMIT 200");

        $WorkHistoryQuery->bind_param('s', $WorkHistory->id);  // Bind "$id" to parameter.
        $WorkHistoryQuery->execute();    // Execute the prepared query.
        $WorkHistoryQuery->store_result();

        // get variables from result.
        $WorkHistoryQuery->bind_result($WorkHistory->user_id, $WorkHistory->ocupation, $WorkHistory->years, $WorkHistory->highest_position);
        $WorkHistoryQuery->fetch();
        return $WorkHistory;
    }
}

然后我通過執行以下操作來拉班：

$wh = new WorkHistory($logged_user);

當我做：

print_r($wh);

它返回：

WorkHistory對象（[id] => 3 [user_id] => 3 [職業] =>忍者[年] => 100 [最高位置] =>黑帶）

但是，這只是第一個結果，我如何獲得其他結果？

歡呼，丹

Answer 1

$WorkHistoryQuery->fetch(); 除非您使用while循環，否則只會返回一條記錄。

您需要嘗試使用fetch_all方法來執行此操作。

同時查看您的條件。 如果user_id是唯一的，則由於您的where條件，它將僅返回單個記錄。