wordpress 邮箱验证前禁止注册用户登陆

wp-members-core.php

<?php
/**
 * 需求：User can register using email and user name, then log in later after receiving the validation email. All the users share the same avatar.   
 * 即 邮箱验证前禁止注册用户登陆
 * 本需求可以使用Pie Register的验证link 并参照 http://wordpress.org/plugins/wp-members/ 的 wp-members-core.php 代码 进行实现
 * Step 1: Enable plugin  Pie Register http://wordpress.org/plugins/pie-register/
 * Step 2: Go Pie Register  -> General Settings (wp-admin/admin.php?page=pie-general-settings)  set User Verification => Email Verification.
 * Step 3: Add flow code in your theme functions.php 
 */
/** initialize **/
add_action( 'after_setup_theme', 'dale_wp_user_login_after_email_validation', 10 );
function dale_wp_user_login_after_email_validation()
{
	add_filter( 'authenticate', 'dale_wp_user_login_check_activated', 99, 3 ); 
}

if( ! function_exists( 'dale_wp_user_login_check_activated' ) ):
/**
 * Checks if a user is activated
 *
 * @since 2.7.1
 *
 * @param  int $user
 * @param  string $username
 * @param  string $password
 * @uses   wp_check_password
 * @return int $user
 */ 
function dale_wp_user_login_check_activated( $user, $username, $password ) 
{
	// password must be validated
	$pass = ( ( ! is_wp_error( $user ) ) && $password ) ? wp_check_password( $password, $user->user_pass, $user->ID ) : false;
	
	if( ! $pass ) { 
		return $user; 
	}

	// activation flag must be validated
	$active = get_user_meta( $user->ID, 'active', 1 );
	if( $active != 1 ) {
		return new WP_Error( 'authentication_failed', __( '<strong>ERROR</strong>: User has not been activated.', 'your_theme_translate_domain' ) );
	}

	// if the user is validated, return the $user object
	return $user;
}
endif;