Blogger post using PHP API

<?php
error_reporting(E_ALL);
ini_set('display_errors',1);
session_start();
require_once dirname(__FILE__) . '/GoogleClientApi/src/Google/autoload.php';
require_once dirname(__FILE__).'/GoogleClientApi/src/Google/Client.php';
require_once dirname(__FILE__).'/GoogleClientApi/src/Google/Service.php';
require_once dirname(__FILE__).'/GoogleClientApi/src/Google/Model.php';
require_once dirname(__FILE__).'/GoogleClientApi/src/Google/Collection.php';
require_once dirname(__FILE__).'/GoogleClientApi/src/Google/Config.php';
require_once dirname(__FILE__).'/GoogleClientApi/src/Google/Service/Resource.php';
require_once dirname(__FILE__).'/GoogleClientApi/src/Google/Service/Blogger.php';
//echo '<pre>';
$scriptUri = "<redirect url>";

$client = new Google_Client();
$client->setAccessType('online'); // default: offline
$client->setApplicationName('<appName>'); //name of the application
$client->setClientId('<clientID>'); //insert your client id
$client->setClientSecret('<clientsecret>'); //insert your client secret
$client->setRedirectUri($scriptUri); //redirects to same url
$client->setDeveloperKey('<developerkey>'); // API key (at bottom of page)
$client->setScopes(array('https://www.googleapis.com/auth/blogger')); //since we are going to use blogger services


if (isset($_GET['logout'])) { // logout: destroy token
    unset($_SESSION['token']);
header("Location: ".$scriptUri);
}

if (isset($_GET['code'])) { // we received the positive auth callback, get the token and store it in session
    $client->authenticate($_GET['code']);
    $_SESSION['token'] = $client->getAccessToken();
header("Location: bloglist.php");
}

if (isset($_SESSION['token'])) { // extract token from session and configure client
    $token = $_SESSION['token'];
    $client->setAccessToken($token);
}

if (!$client->getAccessToken()) { // auth call to google
    $authUrl = $client->createAuthUrl();
    header("Location: ".$authUrl);
    //die;
}
if(isset($_POST['submit'])){
$blogger = new Google_Service_Blogger($client);
//you can get the data about the blog by getByUrl
$blog = $blogger->blogs->getByUrl(array('url'=>'<blogurl>'));

//creates a post object
  $mypost = new Google_Service_Blogger_Post();
  $mypost->setTitle($_POST['title']);
  $mypost->setContent($_POST['desc']);
  //echo $blog->getId();
$data = $blogger->posts->insert($blog->getId(), $mypost);
header("Location: bloglist.php");
}else if(isset($_GET['delete']) && isset($_GET['postid'])){
$blogger = new Google_Service_Blogger($client);
$blog = $blogger->blogs->getByUrl(array('url'=>'<blogurl>'));
$data = $blogger->posts->delete($blog->getId(), $_GET['postid']);
header("Location: bloglist.php");

}else if(isset($_POST['update'])){
$blogger = new Google_Service_Blogger($client);
$blog = $blogger->blogs->getByUrl(array('url'=>'<blogurl>'));
$mypost = new Google_Service_Blogger_Post();
$mypost->setTitle($_POST['title']);
$mypost->setContent($_POST['desc']);
$blogger->posts->update($blog->getId(), $_GET['postid'], $mypost);
header("Location: bloglist.php");

}else if(isset($_GET['edit']) && isset($_GET['postid'])){
$blogger = new Google_Service_Blogger($client);
$blog = $blogger->blogs->getByUrl(array('url'=>'<blogurl>'));
$singlepost = $blogger->posts->get($blog->getId(), $_GET['postid']);
}

?>
<form method="post">
<table>

<tr>
<td>Title</td>
<td>
<input type="text" name="title" value="<?php echo isset($singlepost->title) ? $singlepost->title : '';  ?>">
<?php if(isset($singlepost->id)){ ?>
<input type="hidden" name="postid" value="<?php echo $singlepost->id; ?>">
<?php } ?>
</td>
</tr>
<tr>
<td>Description</td>
<td><textarea name="desc"><?php echo isset($singlepost->content) ? $singlepost->content : '';  ?></textarea></td>
</tr>
<tr>
<td></td>
<td><input type="submit" name="<?php $val = isset($singlepost->id) ? 'update' : 'submit' ; echo $val; ?>" value="<?php echo $val ; ?>"></td>
</tr>

</table>
</form>