PHP MySQL PDO TextArea具有条件检查的Where子句

我有一个页面,如下面的屏幕截图所示.我们的想法是输入公交车号码和特定路线上所有站点的列表,每行一个.

停靠点已存储在名为“stops”的数据库表中,我需要textarea中每个停靠点的ID.我当前的代码只获取textarea中最后一站的ID.我觉得我错过了什么. ‘busnumber’是我的文本域,’busroute’是我的textarea.如果有人能指出我需要更改的内容,以便将textarea中输入的每个停止点的ID作为数组,我将不胜感激.感谢您提前的时间.

try {
            $conn = new PDO("MysqL:host=$host;dbname=$dbname", $username, $password);
            if(isset($_POST["busnumber"]) && isset($_POST["busroute"])){

            $stops = explode(PHP_EOL, $_POST["busroute"]);
            $stopsArray = '"' . implode('","', $stops) . '"';
            $sql = "SELECT * FROM stops WHERE stop_name IN ($stopsArray)";
            echo $sql."</br>";
            $query = $conn->prepare($sql);
            $query->execute();
            $query->setFetchMode(PDO::FETCH_ASSOC);
            $results = $query->fetchAll();
            foreach($results as $result){
            echo $result['stop_id'].' '.$result['stop_name'].'</br>';
            }
            }

} catch (PDOException $pe) {
die("Could not connect to the database $dbname :" . $pe->getMessage());

}

更新1
我更改了代码如下

$conn = new PDO("MysqL:host=$host;dbname=$dbname", $username, $password);
        if(isset($_POST["busnumber"], $_POST["busroute"])){

    $stops = explode(PHP_EOL, $_POST["busroute"]);

    foreach($stops as $stop){
        $sql = "SELECT * FROM stops WHERE stop_name = '".$stop."'";
        $statement = $conn->query($sql);
        echo $sql.'</br>';
        $statement->setFetchMode(PDO::FETCH_ASSOC);
        $results = $statement->fetchAll();
        foreach($results as $result){
            echo $result['stop_id'].' '.$result['stop_name'];
        }
        $statement = null;

    }
        }

并且仍然得到相同的输出,它只给我textarea中最后一项的ID

解决方法:

我刚刚意识到你上面显示了工作代码.我很抱歉在上面已经有了答案(看看你想要的历史)(*哈哈).在这里,我更新了你的代码(第一个).我更改了显示结果的部分：

try {
        $conn = new PDO("MysqL:host=$host;dbname=$dbname", $username, $password);
        if(isset($_POST["busnumber"]) && isset($_POST["busroute"])){
            $stops = explode(PHP_EOL, $_POST["busroute"]);
            $stopsArray = '"' . implode('","', $stops) . '"';

            $sql = "SELECT * FROM stops WHERE stop_name IN ($stopsArray)";
            $query = $conn->prepare($sql);
            $query->execute();

            if ($query->rowCount() > 0){
                while ($row = $query->fetch(PDO::FETCH_ASSOC)){
                    echo '<br/>'.$row['stop_id'].' '.$row['stop_name'];
                }
            }else{
                echo "No records found...";
            }
        }
} catch (PDOException $pe) {
    die("Could not connect to the database $dbname :" . $pe->getMessage());
}

注意：正如我已经阅读了一些教程,使用while循环比fetchAll()更常规.