上一篇文章，我们在wordpress后台文章编辑页面添加了自定义面板，并且在自定义面板中可以输入关键词和描述信息，但是我们仅仅使用了一个textarea文本域表单，这在实际应用中是远远不够的，实际应用我们可能需要文本框、文本域、单选框、复选框、下拉选择框、图片上传、甚至是wordpress自带的文本编辑器或者自己配置的文本编辑器以及各种带js特效的应用。
今天我们给自定义面板添加简单的表单：文本框、文本域、单选框、复选框、下拉选择框。
我们继续使用昨天的文件，改进昨天的代码。
首先准备工作：
先将昨天新建的metabox.php文件中的代码清楚，准备字段数组：我们可以参考前面后台教程中配置选项数组的方法来配置数据项：设置选项类文件使用方法：
$new_meta_boxes =
array(
"title" => array(
"name" => "_meta_title",
"std" => "",
"title" => "标题",
"type"=>"title"),
"keywords" => array(
"name" => "_meta_keywords",
"std" => "",
"title" => "关键字",
"type"=>"text"),
"description" => array(
"name" => "_meta_description",
"std" => "",
"title" => "描述",
"type"=>"textarea"),
"category" => array(
"name" => "_meta_cate",
"std" => "",
"title" => "选择分类",
"subtype"=> "cat",
"type"=>"dropdown"),
"radio" => array(
"name" => "_meta_radio",
"std" => 1,
"title" => "单选框",
"buttons" => array('Yes','No'),
"type"=>"radio"),
"checkbox" => array(
"name" => "_meta_checkbox",
"std" => 1,
"title" => "复选框",
"type"=>"checkbox"),
); function new_meta_boxes() {
global $post, $new_meta_boxes;
foreach($new_meta_boxes as $meta_box) {
//获取保存的是
$meta_box_value = get_post_meta($post->ID, $meta_box['name'].'_value', true);
if($meta_box_value != "")
$meta_box['std'] = $meta_box_value;//将默认值替换为以保存的值
echo'';
//通过选择类型输出不同的html代码
switch ( $meta_box['type'] ){
case 'title':
echo'
'.$meta_box['title'].'
';
break;
case 'text':
echo'
'.$meta_box['title'].'
';
echo '
';
break;
case 'textarea':
echo'
'.$meta_box['title'].'
';
echo '
';
break;
case 'dropdown':
echo'
'.$meta_box['title'].'
';
if($meta_box['subtype'] == 'cat'){
$select = 'Select category';
$entries = get_categories('title_li=&orderby=name&hide_empty=0');//获取分类
}
echo '
';
echo ''.$select .' ';
foreach ($entries as $key => $entry){
$id = $entry->term_id;
$title = $entry->name;
if ( $meta_box['std'] == $id ){
$selected = "selected='selected'";
}else{
$selected = "";
}
echo "". $title."";
}
echo '
';
break;
case 'radio':
echo'
'.$meta_box['title'].'
';
$counter = 1;
foreach( $meta_box['buttons'] as $radiobutton ) {
$checked ="";
if(isset($meta_box['std']) && $meta_box['std'] == $counter) {
$checked = 'checked = "checked"';
}
echo ''.$radiobutton;
$counter++;
}
break;
case 'checkbox':
echo'
'.$meta_box['title'].'
';
if( isset($meta_box['std']) && $meta_box['std'] == 'true' )
$checked = 'checked = "checked"';
else
$checked = '';
echo '';
break;
}
}
}
function create_meta_box() {
global $theme_name;
if ( function_exists('add_meta_box') ) {
add_meta_box( 'new-meta-boxes', '自定义模块', 'new_meta_boxes', 'post', 'normal', 'high' );
}
}
function save_postdata( $post_id ) {
global $post, $new_meta_boxes;
foreach($new_meta_boxes as $meta_box) {
if ( !wp_verify_nonce( $_POST[$meta_box['name'].'_noncename'], plugin_basename(__FILE__) )) {
return $post_id;
}
if ( 'page' == $_POST['post_type'] ) {
if ( !current_user_can( 'edit_page', $post_id ))
return $post_id;
}
else {
if ( !current_user_can( 'edit_post', $post_id ))
return $post_id;
}
$data = $_POST[$meta_box['name'].'_value'];
if(get_post_meta($post_id, $meta_box['name'].'_value') == "")
add_post_meta($post_id, $meta_box['name'].'_value', $data, true);
elseif($data != get_post_meta($post_id, $meta_box['name'].'_value', true))
update_post_meta($post_id, $meta_box['name'].'_value', $data);
elseif($data == "")
delete_post_meta($post_id, $meta_box['name'].'_value', get_post_meta($post_id, $meta_box['name'].'_value', true));
}
}
add_action('admin_menu', 'create_meta_box');
add_action('save_post', 'save_postdata');
$ashu_eitor = get_post_meta($post->ID, "_meta_keywords_value", true);
二、创建(显示)面板内容的函数
$new_meta_boxes =
array(
"title" => array(
"name" => "_meta_title",
"std" => "",
"title" => "标题",
"type"=>"title"),
"keywords" => array(
"name" => "_meta_keywords",
"std" => "",
"title" => "关键字",
"type"=>"text"),
"description" => array(
"name" => "_meta_description",
"std" => "",
"title" => "描述",
"type"=>"textarea"),
"category" => array(
"name" => "_meta_cate",
"std" => "",
"title" => "选择分类",
"subtype"=> "cat",
"type"=>"dropdown"),
"radio" => array(
"name" => "_meta_radio",
"std" => 1,
"title" => "单选框",
"buttons" => array('Yes','No'),
"type"=>"radio"),
"checkbox" => array(
"name" => "_meta_checkbox",
"std" => 1,
"title" => "复选框",
"type"=>"checkbox"),
); function new_meta_boxes() {
global $post, $new_meta_boxes;
foreach($new_meta_boxes as $meta_box) {
//获取保存的是
$meta_box_value = get_post_meta($post->ID, $meta_box['name'].'_value', true);
if($meta_box_value != "")
$meta_box['std'] = $meta_box_value;//将默认值替换为以保存的值
echo'';
//通过选择类型输出不同的html代码
switch ( $meta_box['type'] ){
case 'title':
echo'
'.$meta_box['title'].'
';
break;
case 'text':
echo'
'.$meta_box['title'].'
';
echo '
';
break;
case 'textarea':
echo'
'.$meta_box['title'].'
';
echo '
';
break;
case 'dropdown':
echo'
'.$meta_box['title'].'
';
if($meta_box['subtype'] == 'cat'){
$select = 'Select category';
$entries = get_categories('title_li=&orderby=name&hide_empty=0');//获取分类
}
echo '
';
echo ''.$select .' ';
foreach ($entries as $key => $entry){
$id = $entry->term_id;
$title = $entry->name;
if ( $meta_box['std'] == $id ){
$selected = "selected='selected'";
}else{
$selected = "";
}
echo "". $title."";
}
echo '
';
break;
case 'radio':
echo'
'.$meta_box['title'].'
';
$counter = 1;
foreach( $meta_box['buttons'] as $radiobutton ) {
$checked ="";
if(isset($meta_box['std']) && $meta_box['std'] == $counter) {
$checked = 'checked = "checked"';
}
echo ''.$radiobutton;
$counter++;
}
break;
case 'checkbox':
echo'
'.$meta_box['title'].'
';
if( isset($meta_box['std']) && $meta_box['std'] == 'true' )
$checked = 'checked = "checked"';
else
$checked = '';
echo '';
break;
}
}
}
function create_meta_box() {
global $theme_name;
if ( function_exists('add_meta_box') ) {
add_meta_box( 'new-meta-boxes', '自定义模块', 'new_meta_boxes', 'post', 'normal', 'high' );
}
}
function save_postdata( $post_id ) {
global $post, $new_meta_boxes;
foreach($new_meta_boxes as $meta_box) {
if ( !wp_verify_nonce( $_POST[$meta_box['name'].'_noncename'], plugin_basename(__FILE__) )) {
return $post_id;
}
if ( 'page' == $_POST['post_type'] ) {
if ( !current_user_can( 'edit_page', $post_id ))
return $post_id;
}
else {
if ( !current_user_can( 'edit_post', $post_id ))
return $post_id;
}
$data = $_POST[$meta_box['name'].'_value'];
if(get_post_meta($post_id, $meta_box['name'].'_value') == "")
add_post_meta($post_id, $meta_box['name'].'_value', $data, true);
elseif($data != get_post_meta($post_id, $meta_box['name'].'_value', true))
update_post_meta($post_id, $meta_box['name'].'_value', $data);
elseif($data == "")
delete_post_meta($post_id, $meta_box['name'].'_value', get_post_meta($post_id, $meta_box['name'].'_value', true));
}
}
add_action('admin_menu', 'create_meta_box');
add_action('save_post', 'save_postdata');
$ashu_eitor = get_post_meta($post->ID, "_meta_keywords_value", true);
三、创建面板
$new_meta_boxes =
array(
"title" => array(
"name" => "_meta_title",
"std" => "",
"title" => "标题",
"type"=>"title"),
"keywords" => array(
"name" => "_meta_keywords",
"std" => "",
"title" => "关键字",
"type"=>"text"),
"description" => array(
"name" => "_meta_description",
"std" => "",
"title" => "描述",
"type"=>"textarea"),
"category" => array(
"name" => "_meta_cate",
"std" => "",
"title" => "选择分类",
"subtype"=> "cat",
"type"=>"dropdown"),
"radio" => array(
"name" => "_meta_radio",
"std" => 1,
"title" => "单选框",
"buttons" => array('Yes','No'),
"type"=>"radio"),
"checkbox" => array(
"name" => "_meta_checkbox",
"std" => 1,
"title" => "复选框",
"type"=>"checkbox"),
); function new_meta_boxes() {
global $post, $new_meta_boxes;
foreach($new_meta_boxes as $meta_box) {
//获取保存的是
$meta_box_value = get_post_meta($post->ID, $meta_box['name'].'_value', true);
if($meta_box_value != "")
$meta_box['std'] = $meta_box_value;//将默认值替换为以保存的值
echo'';
//通过选择类型输出不同的html代码
switch ( $meta_box['type'] ){
case 'title':
echo'
'.$meta_box['title'].'
';
break;
case 'text':
echo'
'.$meta_box['title'].'
';
echo '
';
break;
case 'textarea':
echo'
'.$meta_box['title'].'
';
echo '
';
break;
case 'dropdown':
echo'
'.$meta_box['title'].'
';
if($meta_box['subtype'] == 'cat'){
$select = 'Select category';
$entries = get_categories('title_li=&orderby=name&hide_empty=0');//获取分类
}
echo '
';
echo ''.$select .' ';
foreach ($entries as $key => $entry){
$id = $entry->term_id;
$title = $entry->name;
if ( $meta_box['std'] == $id ){
$selected = "selected='selected'";
}else{
$selected = "";
}
echo "". $title."";
}
echo '
';
break;
case 'radio':
echo'
'.$meta_box['title'].'
';
$counter = 1;
foreach( $meta_box['buttons'] as $radiobutton ) {
$checked ="";
if(isset($meta_box['std']) && $meta_box['std'] == $counter) {
$checked = 'checked = "checked"';
}
echo ''.$radiobutton;
$counter++;
}
break;
case 'checkbox':
echo'
'.$meta_box['title'].'
';
if( isset($meta_box['std']) && $meta_box['std'] == 'true' )
$checked = 'checked = "checked"';
else
$checked = '';
echo '';
break;
}
}
}
function create_meta_box() {
global $theme_name;
if ( function_exists('add_meta_box') ) {
add_meta_box( 'new-meta-boxes', '自定义模块', 'new_meta_boxes', 'post', 'normal', 'high' );
}
}
function save_postdata( $post_id ) {
global $post, $new_meta_boxes;
foreach($new_meta_boxes as $meta_box) {
if ( !wp_verify_nonce( $_POST[$meta_box['name'].'_noncename'], plugin_basename(__FILE__) )) {
return $post_id;
}
if ( 'page' == $_POST['post_type'] ) {
if ( !current_user_can( 'edit_page', $post_id ))
return $post_id;
}
else {
if ( !current_user_can( 'edit_post', $post_id ))
return $post_id;
}
$data = $_POST[$meta_box['name'].'_value'];
if(get_post_meta($post_id, $meta_box['name'].'_value') == "")
add_post_meta($post_id, $meta_box['name'].'_value', $data, true);
elseif($data != get_post_meta($post_id, $meta_box['name'].'_value', true))
update_post_meta($post_id, $meta_box['name'].'_value', $data);
elseif($data == "")
delete_post_meta($post_id, $meta_box['name'].'_value', get_post_meta($post_id, $meta_box['name'].'_value', true));
}
}
add_action('admin_menu', 'create_meta_box');
add_action('save_post', 'save_postdata');
$ashu_eitor = get_post_meta($post->ID, "_meta_keywords_value", true);
四、保存更新数据
$new_meta_boxes =
array(
"title" => array(
"name" => "_meta_title",
"std" => "",
"title" => "标题",
"type"=>"title"),
"keywords" => array(
"name" => "_meta_keywords",
"std" => "",
"title" => "关键字",
"type"=>"text"),
"description" => array(
"name" => "_meta_description",
"std" => "",
"title" => "描述",
"type"=>"textarea"),
"category" => array(
"name" => "_meta_cate",
"std" => "",
"title" => "选择分类",
"subtype"=> "cat",
"type"=>"dropdown"),
"radio" => array(
"name" => "_meta_radio",
"std" => 1,
"title" => "单选框",
"buttons" => array('Yes','No'),
"type"=>"radio"),
"checkbox" => array(
"name" => "_meta_checkbox",
"std" => 1,
"title" => "复选框",
"type"=>"checkbox"),
); function new_meta_boxes() {
global $post, $new_meta_boxes;
foreach($new_meta_boxes as $meta_box) {
//获取保存的是
$meta_box_value = get_post_meta($post->ID, $meta_box['name'].'_value', true);
if($meta_box_value != "")
$meta_box['std'] = $meta_box_value;//将默认值替换为以保存的值
echo'';
//通过选择类型输出不同的html代码
switch ( $meta_box['type'] ){
case 'title':
echo'
'.$meta_box['title'].'
';
break;
case 'text':
echo'
'.$meta_box['title'].'
';
echo '
';
break;
case 'textarea':
echo'
'.$meta_box['title'].'
';
echo '
';
break;
case 'dropdown':
echo'
'.$meta_box['title'].'
';
if($meta_box['subtype'] == 'cat'){
$select = 'Select category';
$entries = get_categories('title_li=&orderby=name&hide_empty=0');//获取分类
}
echo '
';
echo ''.$select .' ';
foreach ($entries as $key => $entry){
$id = $entry->term_id;
$title = $entry->name;
if ( $meta_box['std'] == $id ){
$selected = "selected='selected'";
}else{
$selected = "";
}
echo "". $title."";
}
echo '
';
break;
case 'radio':
echo'
'.$meta_box['title'].'
';
$counter = 1;
foreach( $meta_box['buttons'] as $radiobutton ) {
$checked ="";
if(isset($meta_box['std']) && $meta_box['std'] == $counter) {
$checked = 'checked = "checked"';
}
echo ''.$radiobutton;
$counter++;
}
break;
case 'checkbox':
echo'
'.$meta_box['title'].'
';
if( isset($meta_box['std']) && $meta_box['std'] == 'true' )
$checked = 'checked = "checked"';
else
$checked = '';
echo '';
break;
}
}
}
function create_meta_box() {
global $theme_name;
if ( function_exists('add_meta_box') ) {
add_meta_box( 'new-meta-boxes', '自定义模块', 'new_meta_boxes', 'post', 'normal', 'high' );
}
}
function save_postdata( $post_id ) {
global $post, $new_meta_boxes;
foreach($new_meta_boxes as $meta_box) {
if ( !wp_verify_nonce( $_POST[$meta_box['name'].'_noncename'], plugin_basename(__FILE__) )) {
return $post_id;
}
if ( 'page' == $_POST['post_type'] ) {
if ( !current_user_can( 'edit_page', $post_id ))
return $post_id;
}
else {
if ( !current_user_can( 'edit_post', $post_id ))
return $post_id;
}
$data = $_POST[$meta_box['name'].'_value'];
if(get_post_meta($post_id, $meta_box['name'].'_value') == "")
add_post_meta($post_id, $meta_box['name'].'_value', $data, true);
elseif($data != get_post_meta($post_id, $meta_box['name'].'_value', true))
update_post_meta($post_id, $meta_box['name'].'_value', $data);
elseif($data == "")
delete_post_meta($post_id, $meta_box['name'].'_value', get_post_meta($post_id, $meta_box['name'].'_value', true));
}
}
add_action('admin_menu', 'create_meta_box');
add_action('save_post', 'save_postdata');
$ashu_eitor = get_post_meta($post->ID, "_meta_keywords_value", true);
五、触发函数
$new_meta_boxes =
array(
"title" => array(
"name" => "_meta_title",
"std" => "",
"title" => "标题",
"type"=>"title"),
"keywords" => array(
"name" => "_meta_keywords",
"std" => "",
"title" => "关键字",
"type"=>"text"),
"description" => array(
"name" => "_meta_description",
"std" => "",
"title" => "描述",
"type"=>"textarea"),
"category" => array(
"name" => "_meta_cate",
"std" => "",
"title" => "选择分类",
"subtype"=> "cat",
"type"=>"dropdown"),
"radio" => array(
"name" => "_meta_radio",
"std" => 1,
"title" => "单选框",
"buttons" => array('Yes','No'),
"type"=>"radio"),
"checkbox" => array(
"name" => "_meta_checkbox",
"std" => 1,
"title" => "复选框",
"type"=>"checkbox"),
); function new_meta_boxes() {
global $post, $new_meta_boxes;
foreach($new_meta_boxes as $meta_box) {
//获取保存的是
$meta_box_value = get_post_meta($post->ID, $meta_box['name'].'_value', true);
if($meta_box_value != "")
$meta_box['std'] = $meta_box_value;//将默认值替换为以保存的值
echo'';
//通过选择类型输出不同的html代码
switch ( $meta_box['type'] ){
case 'title':
echo'
'.$meta_box['title'].'
';
break;
case 'text':
echo'
'.$meta_box['title'].'
';
echo '
';
break;
case 'textarea':
echo'
'.$meta_box['title'].'
';
echo '
';
break;
case 'dropdown':
echo'
'.$meta_box['title'].'
';
if($meta_box['subtype'] == 'cat'){
$select = 'Select category';
$entries = get_categories('title_li=&orderby=name&hide_empty=0');//获取分类
}
echo '
';
echo ''.$select .' ';
foreach ($entries as $key => $entry){
$id = $entry->term_id;
$title = $entry->name;
if ( $meta_box['std'] == $id ){
$selected = "selected='selected'";
}else{
$selected = "";
}
echo "". $title."";
}
echo '
';
break;
case 'radio':
echo'
'.$meta_box['title'].'
';
$counter = 1;
foreach( $meta_box['buttons'] as $radiobutton ) {
$checked ="";
if(isset($meta_box['std']) && $meta_box['std'] == $counter) {
$checked = 'checked = "checked"';
}
echo ''.$radiobutton;
$counter++;
}
break;
case 'checkbox':
echo'
'.$meta_box['title'].'
';
if( isset($meta_box['std']) && $meta_box['std'] == 'true' )
$checked = 'checked = "checked"';
else
$checked = '';
echo '';
break;
}
}
}
function create_meta_box() {
global $theme_name;
if ( function_exists('add_meta_box') ) {
add_meta_box( 'new-meta-boxes', '自定义模块', 'new_meta_boxes', 'post', 'normal', 'high' );
}
}
function save_postdata( $post_id ) {
global $post, $new_meta_boxes;
foreach($new_meta_boxes as $meta_box) {
if ( !wp_verify_nonce( $_POST[$meta_box['name'].'_noncename'], plugin_basename(__FILE__) )) {
return $post_id;
}
if ( 'page' == $_POST['post_type'] ) {
if ( !current_user_can( 'edit_page', $post_id ))
return $post_id;
}
else {
if ( !current_user_can( 'edit_post', $post_id ))
return $post_id;
}
$data = $_POST[$meta_box['name'].'_value'];
if(get_post_meta($post_id, $meta_box['name'].'_value') == "")
add_post_meta($post_id, $meta_box['name'].'_value', $data, true);
elseif($data != get_post_meta($post_id, $meta_box['name'].'_value', true))
update_post_meta($post_id, $meta_box['name'].'_value', $data);
elseif($data == "")
delete_post_meta($post_id, $meta_box['name'].'_value', get_post_meta($post_id, $meta_box['name'].'_value', true));
}
}
add_action('admin_menu', 'create_meta_box');
add_action('save_post', 'save_postdata');
$ashu_eitor = get_post_meta($post->ID, "_meta_keywords_value", true);
效果：
调用的时候使用get_post_meta函数获取即可，不过主要我们保存的字段名称，虽然我们的配置数组中配置了name，但是保存自定义字段的时候我们在字段名称后面加了_value，以我们的关键字_meta_keywords为例，获取应该是：
$new_meta_boxes =
array(
"title" => array(
"name" => "_meta_title",
"std" => "",
"title" => "标题",
"type"=>"title"),
"keywords" => array(
"name" => "_meta_keywords",
"std" => "",
"title" => "关键字",
"type"=>"text"),
"description" => array(
"name" => "_meta_description",
"std" => "",
"title" => "描述",
"type"=>"textarea"),
"category" => array(
"name" => "_meta_cate",
"std" => "",
"title" => "选择分类",
"subtype"=> "cat",
"type"=>"dropdown"),
"radio" => array(
"name" => "_meta_radio",
"std" => 1,
"title" => "单选框",
"buttons" => array('Yes','No'),
"type"=>"radio"),
"checkbox" => array(
"name" => "_meta_checkbox",
"std" => 1,
"title" => "复选框",
"type"=>"checkbox"),
); function new_meta_boxes() {
global $post, $new_meta_boxes;
foreach($new_meta_boxes as $meta_box) {
//获取保存的是
$meta_box_value = get_post_meta($post->ID, $meta_box['name'].'_value', true);
if($meta_box_value != "")
$meta_box['std'] = $meta_box_value;//将默认值替换为以保存的值
echo'';
//通过选择类型输出不同的html代码
switch ( $meta_box['type'] ){
case 'title':
echo'
'.$meta_box['title'].'
';
break;
case 'text':
echo'
'.$meta_box['title'].'
';
echo '
';
break;
case 'textarea':
echo'
'.$meta_box['title'].'
';
echo '
';
break;
case 'dropdown':
echo'
'.$meta_box['title'].'
';
if($meta_box['subtype'] == 'cat'){
$select = 'Select category';
$entries = get_categories('title_li=&orderby=name&hide_empty=0');//获取分类
}
echo '
';
echo ''.$select .' ';
foreach ($entries as $key => $entry){
$id = $entry->term_id;
$title = $entry->name;
if ( $meta_box['std'] == $id ){
$selected = "selected='selected'";
}else{
$selected = "";
}
echo "". $title."";
}
echo '
';
break;
case 'radio':
echo'
'.$meta_box['title'].'
';
$counter = 1;
foreach( $meta_box['buttons'] as $radiobutton ) {
$checked ="";
if(isset($meta_box['std']) && $meta_box['std'] == $counter) {
$checked = 'checked = "checked"';
}
echo ''.$radiobutton;
$counter++;
}
break;
case 'checkbox':
echo'
'.$meta_box['title'].'
';
if( isset($meta_box['std']) && $meta_box['std'] == 'true' )
$checked = 'checked = "checked"';
else
$checked = '';
echo '';
break;
}
}
}
function create_meta_box() {
global $theme_name;
if ( function_exists('add_meta_box') ) {
add_meta_box( 'new-meta-boxes', '自定义模块', 'new_meta_boxes', 'post', 'normal', 'high' );
}
}
function save_postdata( $post_id ) {
global $post, $new_meta_boxes;
foreach($new_meta_boxes as $meta_box) {
if ( !wp_verify_nonce( $_POST[$meta_box['name'].'_noncename'], plugin_basename(__FILE__) )) {
return $post_id;
}
if ( 'page' == $_POST['post_type'] ) {
if ( !current_user_can( 'edit_page', $post_id ))
return $post_id;
}
else {
if ( !current_user_can( 'edit_post', $post_id ))
return $post_id;
}
$data = $_POST[$meta_box['name'].'_value'];
if(get_post_meta($post_id, $meta_box['name'].'_value') == "")
add_post_meta($post_id, $meta_box['name'].'_value', $data, true);
elseif($data != get_post_meta($post_id, $meta_box['name'].'_value', true))
update_post_meta($post_id, $meta_box['name'].'_value', $data);
elseif($data == "")
delete_post_meta($post_id, $meta_box['name'].'_value', get_post_meta($post_id, $meta_box['name'].'_value', true));
}
}
add_action('admin_menu', 'create_meta_box');
add_action('save_post', 'save_postdata');
$ashu_eitor = get_post_meta($post->ID, "_meta_keywords_value", true);
其实本教程的代码很多和前面的相同，只不过给准备的数据加了个类型判断，通过判断类型来输出不同的html代码。。
