我正在创建 WordPress 插件，用于显示 Twitter 总计数器和 Feed 订阅者。您可以通过小部件进行管理。
我遇到了这个错误。 插件在激活期间生成了123个意外输出字符。如果您注意到“头已发送”消息、syndication feeds 或其他问题，请尝试停用或删除此插件。
我遇到了这个错误。 插件在激活期间生成了123个意外输出字符。如果您注意到“头已发送”消息、syndication feeds 或其他问题，请尝试停用或删除此插件。
<?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');
?>
<php?标签应该从开头开始，?>应该在结尾处结束。我的两个字符意外输入只是因为在<php?前面有一个新行。 - Ehsan88