I am creating WordPress plugin to display Total Twitter counter & Feed Subscriber. You can manage it via widget.
I am getting this error.
The plugin generated 123 characters of unexpected output during activation. If you notice âheaders already sentâ messages, problems with syndication feeds or other issues, try deactivating or removing this plugin.
<?php
/*
* Plugin Name: Twitter & RSS Stats
* Version: 1.0
* Plugin URI: http://sss.com/
* Description: Facebook, Twitter & RSS Social Stats widget <a href="http://jessealtman.com/2009/06/08/tutorial-wordpress-28-widget-api/">tutorial</a>.
* Author: Ajay Patel
* Author URI: http://sss.com/
*/
addHeaderCode();
function addHeaderCode() {
echo '<link type="text/css" rel="stylesheet" href="' . get_bloginfo('wpurl') . '/wp-content/plugins/TRR_Stats/css/style.css" />' . "n";
}
/*******************************/
/* Create table */
/********************************/
function my_plugin_create_table()
{
// do NOT forget this global
global $wpdb;
// this if statement makes sure that the table doe not exist already
if($wpdb->get_var("show tables like TRR_Stats") != 'TRR_Stats')
{
$sql = "CREATE TABLE TRR_Stats (
id mediumint(9) NOT NULL,
rss_email tinytext NOT NULL,
twitter tinytext NOT NULL,
rss tinytext NOT NULL,
UNIQUE KEY id (id)
);";
require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
dbDelta($sql);
}
}
// this hook will cause our creation function to run when the plugin is activated
register_activation_hook( __FILE__, 'my_plugin_create_table' );
class FTRWidget extends WP_Widget
{
/**
* Declares the FTRWidget class.
*
*/
function FTRWidget(){
$widget_ops = array('classname' => 'widget_hello_world', 'description' => __( "Example widget demoing WordPress 2.8 widget API") );
$control_ops = array('width' => 300, 'height' => 300);
$this->WP_Widget('helloworld', __('Twitter & RSS Social Stats'), $widget_ops, $control_ops);
}
/**
* Displays the Widget
*
*/
function widget($args, $instance){
extract($args);
$rss_email = empty($instance['rss_email']) ? 'webdesignergeeks' : $instance['rss_email'];
$twitter = empty($instance['twitter']) ? 'webdesignergeek' : $instance['twitter'];
$rss = empty($instance['rss']) ? 'webdesignergeeks' : $instance['rss'];
# Featch Data from table
global $wpdb;
$item_info = $wpdb->get_row("SELECT * FROM TRR_Stats WHERE id=1;");
$rss_email_f = $item_info->rss_email;
$url = file_get_contents('https://feedburner.google.com/api/awareness/1.0/GetFeedData?uri=24thfloor');
preg_match( '/circulation="(d+)"/', $url, $matches );
if ( $matches[1] )
$rss_f = $matches[1] . " Subscribers";
else
echo "0";
$twit = file_get_contents('http://twitter.com/users/show/'.$twitter.'.xml');
preg_match( '/<followers_count>(d+)</followers_count>/', $twit, $matches );
if ( $matches[1] )
$twitter_f = $matches[1] . " Followers";
else
$twitter_f = "0";
echo '
<div class="sidebarContainer" id="sidebarSubscribe">
<a target="_blank" href="http://twitter.com/'.$twitter.'" class="subscribeSidebarBox" id="followTwitter">
<span class="icon"><img src="'.get_bloginfo('url').'/wp-content/plugins/TRR_Stats/img/twitter.png" alt="Twitter" /></span>
<span class="title">Follow Us on Twitter</span>
<span class="count">'.$twitter_f.'+</span>
</a>
<a target="_blank" href="http://feeds.feedburner.com/'.$rss.'" class="subscribeSidebarBox" id="subscribeRSS">
<span class="icon"><img src="'.get_bloginfo('url').'/wp-content/plugins/TRR_Stats/img/rss_feed.png" alt="RSS"/></span>
<span class="title">Subscribe to our RSS feed</span>
<span class="count">'.$rss_f.'+</span>
</a>
<a target="_blank" href="http://feedburner.google.com/fb/a/mailverify?uri='.$rss_email_f.'" class="subscribeSidebarBox" id="subscribeEmail">
<span class="icon"><img src="'.get_bloginfo('url').'/wp-content/plugins/TRR_Stats/img/rss_email.png" alt="rss_email" /></span>
<span class="title">Subscribe for updates via</span>
<span class="count">EMAIL</span>
</a>
</div>';
# After the widget
echo $after_widget;
}
/**
* Saves the widgets settings.
*
*/
function update($new_instance, $old_instance){
$instance = $old_instance;
$instance['rss_email'] = strip_tags(stripslashes($new_instance['rss_email']));
$instance['twitter'] = strip_tags(stripslashes($new_instance['twitter']));
$instance['rss'] = strip_tags(stripslashes($new_instance['rss']));
global $wpdb;
//Insert First time
$wpdb->insert( 'TRR_Stats', array(
'id' => 1,
'rss_email' => $instance['rss_email'],
'twitter' => $instance['twitter'],
'rss' => $instance['rss']
)
);
//Rest Update Data
global $wpdb;
$wpdb->update( 'TRR_Stats',
array(
'rss_email' => $instance['rss_email'],
'twitter' => $instance['twitter'],
'rss' => $instance['rss']
),
array(
'id' => 1
)
);
return $instance;
}
/**
* Creates the edit form for the widget.
*
*/
function form($instance){
//Defaults
$instance = wp_parse_args( (array) $instance, array('rss_email'=>'', 'twitter'=>'engiguide', 'rss'=>'www.rss_email.com/engiguide') );
$rss_email = htmlspecialchars($instance['rss_email']);
$twitter = htmlspecialchars($instance['twitter']);
$rss = htmlspecialchars($instance['rss']);
# Output the options
# Twitter
echo '<p style="text-align:right;"><label for="' . $this->get_field_name('twitter') . '">' . ('Twitter:') . ' <input style="width: 200px;" id="' . $this->get_field_id('twitter') . '" name="' . $this->get_field_name('twitter') . '" type="text" value="' . $twitter . '" /></label></p>';
echo '<p style="padding-left: 110;">i.e: webdesignergeeks</p>';
# Rss
echo '<p style="text-align:right;"><label for="' . $this->get_field_name('rss') . '">' . __('Rss:') . ' <input style="width: 200px;" id="' . $this->get_field_id('rss') . '" name="' . $this->get_field_name('rss') . '" type="text" value="' . $rss . '" /></label></p>';
echo '<p style="padding-left: 110;">i.e: webdesignergeeks</p>';
# Rss Email
echo '<p style="text-align:right;"><label for="' . $this->get_field_name('rss_email') . '">' . ('Rss Email:') . ' <input style="width: 200px;" id="' . $this->get_field_id('rss_email') . '" name="' . $this->get_field_name('rss_email') . '" type="text" value="' . $rss_email . '" /></label></p>';
echo '<p style="padding-left: 110;">i.e: webdesignergeeks</p>';
}
}// END class
/**
*
* Calls 'widgets_init' action after the Hello World widget has been registered.
*/
function TTRInit() {
register_widget('FTRWidget');
}
add_action('widgets_init', 'TTRInit');
?>
I got extra “xxx” white spaces after the final php closing tag. Removed it and the warning is gone. Those white spaces were the “unexpected output”.
Remove space from start of tags. remove addHeaderCode(); from top and add this code add_action(‘wp_head’, ‘addHeaderCode’); to your file after addHeaderCode() function. its definitely resolve your problem.
it was a UTF8 related issue. I converted it with Notepad++ in UTF8 but I had to conert it in “UTF8 (without BOM)”.
Now I don’t have any notice.
You should try this:
plugin_error()wp_config.phpfile setwp_DEBUG true, that will help you to see errorsThis might help you.
I don’t think you should be sending any output in
addHeaderCode(), this occurs far too early. See Actions Run During a Typical Request.Instead, try hooking to wp_head to add your stylesheet, which should be triggered between
<head>...</head>.Try wrapping the message with
__()like__("Hello, world!")did the trick for me.You can remove update() function without this function it will work fine and will do same thing you are doing.
I had the same issue with WooCommerce Smart Coupons plugin. I removed all extra new lines from plugin php files and saved them in “UTF8 (without BOM)” (as @Umaie Hamid mentioned). This fixed the issue.
I’ve fixed this by removing the spaces in the code using the “edit plugin” in the WP admin. I think when WP save the changes it also does all the necessary settings like saving the file as UTF-8.
I Was getting same error just remove white spacing in your code.