entries_add.php

<?php
if(getUserIdFromSession() != 0)
{
  if(!empty($_POST))
  {
    if(strlen(trim($_POST['title']))!=0 && strlen(trim($_POST['content']))!=0)
    {
      addEntry(getUserIdFromSession(), $_POST['title'], $_POST['content']);
      $url = $_SERVER['PHP_SELF']."?function=entries_member";
      echo "<script>window.location = '$url'</script>";
    } else
    {
      echo "<h1 style='color:red;'>Fehler!\n Titel und/oder Inhalt ist leer.</h1><br>";
    }
  }

echo "<div class='container'>";
  echo "<form action='" . $_SERVER['PHP_SELF']. "?function=entries_add' method='POST'>";

  echo "<div class='form-group'>
    <label for='exampleInputEmail1'>Titel</label>
    <input style='padding-top:0.01%;padding-bottom:0.01%;' name='title' type='text' class='form-control' id='title' placeholder='Name des Beitrags'>
    </div>
    ";

  echo " <div class='form-group'>
    <label for='exampleFormControlTextarea1'>Beitrag</label>
    <textarea class='form-control' id='exampleFormControlTextarea1' name='content' rows='3'></textarea>
  </div>";
  echo "<button type='submit' class='btn btn-primary'>Erstellen</button>";
  echo "</form>";
  echo "</div>";
}
?>