File: /www/wwwroot/shenzhouhuazhang.com/wp-content/plugins/wp-zan/class.wpzan.php
<?php
class wpzan {
private $ip;
public $post_id;
public $user_id;
public $zan_count;
public $is_loggedin;
public function __construct($post_id, $user_id){
$this->ip = $_SERVER['REMOTE_ADDR'];
$this->post_id = $post_id;
$this->user_id = $user_id;
if( $user_id && $user_id > 0 ){
$this->is_loggedin = true;
}
$this->zan_count();
}
public function zan_count(){
global $wpdb, $wpzan_table_name;
// check in the db for zan
$zan_count = $wpdb->get_var($wpdb->prepare("SELECT COUNT(post_id) FROM $wpzan_table_name WHERE post_id = %d", $this->post_id));
// returns zan, return 0 if no zan were found
$this->zan_count = $zan_count;
}
public function is_zan(){
if( isset($_COOKIE['wp_zan_'.$this->post_id]) ){
return true;
}
global $wpdb, $wpzan_table_name;
if($this->is_loggedin){
// user is logged in
$zan_check = $wpdb->get_var($wpdb->prepare("SELECT COUNT(post_id) FROM $wpzan_table_name
WHERE post_id = %d
AND user_id = %d", $this->post_id, $this->user_id));
} else{
// user not logged in, check by ip address
$zan_check = $wpdb->get_var($wpdb->prepare("SELECT COUNT(post_id) FROM $wpzan_table_name
WHERE post_id = %d
AND ip_address = %s
AND user_id = %d", $this->post_id, $this->ip, 0));
}
$zan_check = intval($zan_check);
return $zan_check && $zan_check > 0;
}
public function add_zan(){
global $wpdb, $wpzan_table_name;
if( !$this->is_zan() ){
$wpdb->insert($wpzan_table_name, array('post_id' => $this->post_id,
'user_id' => $this->user_id,
'ip_address' => $this->ip), array('%d', '%d', '%s'));
$expire = time() + 365*24*60*60;
setcookie('wp_zan_'.$this->post_id, $this->post_id, $expire, '/', $_SERVER['HTTP_HOST'], false);
}
$this->zan_count();
}
public function zan_button($odc){
$class = $this->is_zan() ? 'wp-zan zaned' : 'wp-zan';
$userId = $this->is_loggedin ? $this->user_id : 0;
$postId = $this->post_id;
$action = "wpzan($postId, $userId)";
$btn_html = $odc ? '<a id="wp-zan-%d" class="%s" onclick="%s" href="javascript:;"><span>%d</span></a>' : '<a id="wp-zan-%d" class="%s" onclick="%s" href="javascript:;"><i class="iconpage"></i><p>点赞 (<span>%d</span>)</p></a>';
$button = sprintf($btn_html, $postId, $class, $action, $this->zan_count);
return $button;
}
}