无法将$ _GET变量放入SQL语句

时间:2019-04-22 11:18:27

标签: php html

我尝试使用$ _GET变量制作SQL语句

这是我的handler.php:

if(array_key_exists("task", $_GET)){
  $task = $_GET['task'];
}

if(array_key_exists("id", $_GET)){
  $id_event = $_GET['id'];
}

if($task == "write"){
  postMessage();
} else {
  getMessages();
}

function getMessages(){
  global $pdo;
  global $id_event;

  $resultats = $pdo->prepare("SELECT * FROM messages WHERE id_messages_evenement = :id ORDER BY date DESC LIMIT 10");

  $resultats->execute([
      "id" => $id_event
  ]);

  $messages = $resultats->fetchAll();
  echo json_encode($messages);
}

还有我的表格:

        <form action="../src/App/handler.php?task=write&id=13" method="POST">
            <input type="hidden" name ="auteur" id="auteur" value="<?php echo $id_membre ?>">
            <input type="hidden" name ="id_event" id="id_event" value="<?php echo $id_event ?>">
            <input type="text" id="message" name="message">
            <button type="submit">Envoyer</button>
        </form>

但是SQL语句不起作用。

如果我尝试使用$id_event = 13;而不是

if(array_key_exists("id", $_GET)){
  $id_event = $_GET['id'];
}

该语句有效,所以您认为我的问题来自$ _GET ['id']。

例如,每当有人发布带有表单的消息时,例如,调用id为13的“ ../ src / App / handler.php?task = write&id = [...]”,那么我想做 SELECT * FROM messages WHERE id_messages_evenement = 13 ORDER BY date DESC LIMIT 10

编辑:这是我使用AJAX的chat.js:

function getMessages(){
    const requeteAjax = new XMLHttpRequest();
    requeteAjax.open("GET", "../src/App/handler.php");

    requeteAjax.onload = function(){
      const resultat = JSON.parse(requeteAjax.responseText);
      console.log(resultat);
      const html = resultat.reverse().map(function(mess){
        return `
          <div class="message">
            <span class="date">${mess.date.substring(11, 16)}</span>
            <span class="author">${mess.id_auteur}</span> : 
            <span class="content">${mess.message}</span>
          </div>
        `;
      }).join('');

      const messages = document.querySelector('.messages');

      messages.innerHTML = html;
      messages.scrollTop = messages.scrollHeight;
    }
    requeteAjax.send();
  }

  function postMessage(event){
    event.preventDefault();

    const auteur = document.querySelector('#auteur');
    const id_event = document.querySelector('#id_event');
    const message = document.querySelector('#message');

    const data = new FormData();
    data.append('message', message.value);
    data.append('auteur', auteur.value);
    data.append('id_event', id_event.value);

    const requeteAjax = new XMLHttpRequest();
    requeteAjax.open('POST', '../src/App/handler.php?task=write');

    requeteAjax.onload = function(){
      content.value = '';
      content.focus();
      getMessages();
    }
    requeteAjax.send(data);
  }

  document.querySelector('form').addEventListener('submit', postMessage);
  const interval = window.setInterval(getMessages, 1000);
  getMessages();

0 个答案:

没有答案