htmleditor.php

<?php
require ('core.inc.php');
if (loggedin()) {
  include ('headerlogin.php');
}else {
  include ('header.php');
}
$handle = fopen('run.html', 'w');

if(isset($_POST['code'])) {
  $code = $_POST['code'];

  if(fwrite($handle, $code)) {
    header('Location: run.html');
  }
}
 ?>
 <title>HTML environment | The Hub </title>
 <script type="text/javascript">
 function loadCode () {
   if (window.XMLHttpRequest) {
     xmlhttp = new XMLHttpRequest();
   }else {
     xmlhttp = new ActiveObject('Microsoft.XMLHTTP');
   }
   xmlhttp.onreadystatechange = function () {
     if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
       document.getElementById('code1').innerHTML = xmlhttp.responseText;
     }
   }
   para = 'code='+document.getElementById('code').value;
   xmlhttp.open('POST', 'htmleditor.php', true)
   xmlhttp.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
   xmlhttp.send (para);
 }
 </script>
 <div class="row">
 <div class="text-xs-center col-md-7" style="margin-top: 5px;">
   <div class="text-center" id="intro-section">
     <img src="img/thehub.ico.jpg" alt="website logo" width="60" height="60">
     <div class="col-md-6 container">
     <h2>Welcome to our <strong class="animated fadeIn" style="color: indigo; font-family: monospace;">HTML environment!</strong></h2>
     <p class="animated fadeIn">Test your HTML5 code in real time using this HTML environment. Enjoy!</p>
 <hr>
 <button class="btn-outline-success btn-block btn-rounded btn" onclick="loadCode()" name="submit">run code</button><br>
  <div class="input-group md-form">
 <textarea class="lg-textarea" id="code" name="code" placeholder="Your code here... Stretch the area if you prefer" style="height: 350px; background-color: black; color: white; border-radius: 20px;" required></textarea></div>
</div>
</div>
</div>
<div class="text-xs-center col-md-5 container">
<h2 style="margin-top: 5px; font-family: Georgia;">Results</h2><hr>
<div id="code1"></div>
</div>
</div>
<?php
 include 'footer.php';
 ?>