imgur upload from php

PHP

// upload an image to imgur
  // return an array with all data.
  // store image to imgur classs and return imgur link.
  public function imgur_upload($image_location) {
    global $global_vars;
    $out = "";
    $imgur_clientid = $global_vars["imgur_clientid"];

    //$image = file_get_contents($_FILES['image_file']['tmp_name']);
    $image = file_get_contents($image_location);
    $file_name = basename($image_location);

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, 'https://api.imgur.com/3/image.json');
    curl_setopt($ch, CURLOPT_POST, TRUE);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
    curl_setopt($ch, CURLOPT_HTTPHEADER, array( 'Authorization: Client-ID ' . $imgur_clientid ));
    curl_setopt($ch, CURLOPT_POSTFIELDS, array( 'image' => base64_encode($image) ));

    $reply = curl_exec($ch);

    curl_close($ch);

    $reply = json_decode($reply);

    $image_link = $reply->data->link;

    //$out .= "<h3>Image</h3>";
    //$out .= "<img src='$image_link' >";

    // add new image

    $class = new imgur;
    $class->start();

    $class->imgur_id = $reply->data->id;
    //$class->title = $_FILES['image_file']['name'];
    $class->title = $file_name;
    $class->image_type = $reply->data->type;
    $class->image_width = $reply->data->width;
    $class->image_height = $reply->data->height;
    $class->image_size = $reply->data->size;
    $class->deletehash = $reply->data->deletehash;
    $class->image_link = $reply->data->link;
    if($class->add()) {
      return $image_link;
      /*
      $out .= "<div class='alert alert-primary'>
      New image Added. <a href='$class->image_link' target='_blank'>$class->image_link</a>
      </div>";
      */
    } else {
      return false;
      /*
      $out .= "<div class='alert alert-warning'>
        Error adding image.
      </div>";
      */
    }

  }