隐藏内容现在很流行。无论是收费还是单独为了隐藏内容给会员等等，都是增加用户粘性的一种方法。我们这里介绍下一种简易的隐藏方法。它方便快捷。当然你也可以根据这个思路增加自己的特殊功能。但原理是一样的。那就是短码。不多说话。你只需要把下面的代码放在您的主题的function.php文件里就成了。然后在编辑文章时使用相关的短码即可。
具体代码如下：
1、只限游客访问的内容
短码[ie_guest] 这里是隐藏内容[/ie_guest]
add_shortcode( 'ie_guest', 'ie_guest_sc' );
function ie_guest_sc( $atts, $content = null ) {
extract( shortcode_atts( array(
'in' => '',
'admin' => '',
), $atts ) );
$in = str_replace(' ', '', $in);
$includeds = explode(",", $in);
$user_id = get_current_user_id();
//check if user is logged in
if ( is_user_logged_in() ) {
//check if admin is allowed
if ($admin === '1') {
//loop through included user ids
foreach ($includeds as $included) {
//check if user is included
if ($user_id == $included) {
return do_shortcode($content);
}
}
//check if user is admin
if ( current_user_can('administrator') ) {
return do_shortcode($content);
} else {
return '';
}
} else {
//loop though included user ids
foreach ($includeds as $included) {
//check if user is included
if ($user_id == $included) {
return do_shortcode($content);
}
}
return '';
}
//show content to guests
} else {
return do_shortcode($content);
}
}2、只限登录用户访问的内容
短码[ie_loggedin] 这里是隐藏内容[/ie_loggedin]
add_shortcode( 'ie_loggedin', 'ie_loggedin_sc' );
function ie_loggedin_sc( $atts, $content = null ) {
extract( shortcode_atts( array(
'ex' => '',
), $atts ) );
$ex = str_replace(' ', '', $ex);
$excludeds = explode(",", $ex);
$user_id = get_current_user_id();
//check if user is logged in
if ( is_user_logged_in() ) {
//loop through excluded user ids
foreach ($excludeds as $excluded) {
//check if user is excluded
if ($user_id == $excluded) {
//show nothing
return '';
}
}
//show content to logged in users
return do_shortcode($content);
//hide content to guests
} else {
return '';
}
}3、只限特定用户组用户访问
短码[ie_role roles="administrator, editor"] 这里是隐藏内容[/ie_role]，这里的roles指的是您的用户组。
add_shortcode( 'ie_role', 'ie_role_sc' );
function ie_role_sc( $atts, $content = null ) {
extract( shortcode_atts( array(
'roles' => '',
'inverse' => '',
), $atts ) );
if (!is_user_logged_in()) { return; }
$roles = str_replace(' ', '', $roles);
$role_array = explode(",", $roles);
$user = wp_get_current_user();
$user_roles = ( array ) $user->roles;
//loop through allowed roles
if ($inverse !== '1') {
foreach($user_roles as $user_role) {
foreach ($role_array as $allowed_role) {
//check if user has allowed role
if ($user_role == $allowed_role) {
//show nothing
return do_shortcode($content);
}
}
}
} else {
$role_found = 0;
foreach($user_roles as $user_role) {
foreach ($role_array as $allowed_role) {
//check if user has allowed role
if ($user_role == $allowed_role) {
//show nothing
$role_found = 1;
}
}
}
if (!$role_found) {
return do_shortcode($content);
}
}
return;
}
本文已在Ie主题由99839发布
文章来源：https://ietheme.com/restrict-content.html
