Dashboard

Editing: dash_widget.php

<?php
if( !class_exists('RegisterPlusWidget') ){
	class RegisterPlusWidget{
		function RegisterPlusWidget() { //contructor
			// Add the widget to the dashboard
			add_action( 'wp_dashboard_setup', array($this, 'register_widget') );
			add_filter( 'wp_dashboard_widgets', array($this, 'add_widget') );		
		}
		function register_widget() {
			wp_register_sidebar_widget( 'regplus_invite_tracking', __( 'Invitation Code Tracking', 'regplus' ), array($this, 'widget'), array( 'settings' => 'options-general.php?page=register-plus' ) );
		}
		// Modifies the array of dashboard widgets and adds this plugin's
		function add_widget( $widgets ) {
			global $wp_registered_widgets;
	
			if ( !isset($wp_registered_widgets['regplus_invite_tracking']) ) return $widgets;
	
			array_splice( $widgets, 2, 0, 'regplus_invite_tracking' );
	
			return $widgets;
		}
		// Output the widget contents
		function widget( $args ) {
			extract( $args, EXTR_SKIP );
	
			echo $before_widget;
	
			echo $before_title;
			echo $widget_name;
			echo $after_title;
	
			global $wpdb;
			$regplus = get_option( 'register_plus' );
			$codes = $regplus['codepass'];
			$usercodes = array();
			foreach($codes as $code){
				$users = $wpdb->get_results( "SELECT user_id FROM $wpdb->usermeta WHERE meta_key='invite_code' AND meta_value='$code'" );
				echo '<h3>' . $code . ': <small style="font-weight:normal">' . count($users) . ' Users Registered.</small></h3>';
			}		
			echo $after_widget;
		}
	}
} # End Class RegisterPlusWidget

// Start this plugin once all other plugins are fully loaded
add_action( 'plugins_loaded', create_function( '', 'global $regplus_widget; $regplus_widget = new RegisterPlusWidget();' ) );
?>

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