wp字段数组报警，Notice: Undefined index如何处理

[一点优化]

<?php
// 文章SEO
$seo_post_meta_boxes =
array(
“custom_title” => array(
“name” => “custom_title”,
“std” => “”,
“title” => “SEO自定义文章标题”,
“type”=>”text”),

“description” => array(
“name” => “description”,
“std” => “”,
“title” => “SEO文章描述，留空则自动截取首段一定字数作为文章描述”,
“type”=>”textarea”),

“keywords” => array(
“name” => “keywords”,
“std” => “”,
“title” => “SEO文章关键词，多个关键词用半角逗号隔开”,
“type”=>”text”),
);

// 面板内容
function seo_post_meta_boxes() {
global $post, $seo_post_meta_boxes;
//获取保存
foreach ($seo_post_meta_boxes as $meta_box) {
$meta_box_value = get_post_meta($post->ID, $meta_box[‘name’] . ”, true);
if ($meta_box_value != “”)
//将默认值替换为已保存的值
$meta_box[‘std’] = $meta_box_value;
echo ‘<input type=”hidden” name=”‘ . $meta_box[‘name’] . ‘_noncename” id=”‘ . $meta_box[‘name’] . ‘_noncename” value=”‘ . wp_create_nonce(plugin_basename(__FILE__)) . ‘” />’;
//选择类型输出不同的html代码
switch ($meta_box[‘type’]) {
case ‘title’:
echo ‘<h4>’ . $meta_box[‘title’] . ‘</h4>’;
break;
case ‘text’:
echo ‘<h4>’ . $meta_box[‘title’] . ‘</h4>’;
echo ‘<span class=”form-field”><input type=”text” size=”40″ name=”‘ . $meta_box[‘name’] . ‘” value=”‘ . $meta_box[‘std’] . ‘” /></span><br />’;
break;
case ‘textarea’:
echo ‘<h4>’ . $meta_box[‘title’] . ‘</h4>’;
echo ‘<textarea id=”seo-excerpt” cols=”40″ rows=”2″ name=”‘ . $meta_box[‘name’] . ‘”>’ . $meta_box[‘std’] . ‘</textarea><br />’;
break;
}
}
}

// 创建面板
function seo_post_meta_box() {
global $theme_name;
if (function_exists(‘add_meta_box’)) {
add_meta_box(‘seo_post_meta_box’, ‘SEO设置’, ‘seo_post_meta_boxes’, ‘post’, ‘normal’, ‘high’);
}
}
// 保存数据
function save_seo_post_postdata($post_id) {
global $post, $seo_post_meta_boxes;
foreach ($seo_post_meta_boxes as $meta_box) {
if (!wp_verify_nonce($_POST[$meta_box[‘name’] . ‘_noncename’], plugin_basename(__FILE__))) {  ///报错位置
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’] . ”];
if (get_post_meta($post_id, $meta_box[‘name’] . ”) == “”) add_post_meta($post_id, $meta_box[‘name’] . ”, $data, true);
elseif ($data != get_post_meta($post_id, $meta_box[‘name’] . ”, true)) update_post_meta($post_id, $meta_box[‘name’] . ”, $data);
elseif ($data == “”) delete_post_meta($post_id, $meta_box[‘name’] . ”, get_post_meta($post_id, $meta_box[‘name’] . ”, true));
}
}
// 触发
add_action(‘admin_menu’, ‘seo_post_meta_box’);
add_action(‘save_post’, ‘save_seo_post_postdata’);

// 页面相关自定义栏目
$new_meta_page_boxes =
array(
"custom_title" => array(
"name" => "custom_title",
"std" => "",
"title" => "SEO自定义页面标题",
"type"=>"text"),

"description" => array(
"name" => "description",
"std" => "",
"title" => "文章描述，留空则自动截取首段一定字数作为文章描述",
"type"=>"textarea"),

"keywords" => array(
"name" => "keywords",
"std" => "",
"title" => "文章关键词，多个关键词用半角逗号隔开",
"type"=>"text"),
);

// 面板内容
function new_meta_page_boxes() {
global $post, $new_meta_page_boxes;
//获取保存
foreach ($new_meta_page_boxes as $meta_box) {
$meta_box_value = get_post_meta($post->ID, $meta_box['name'] . '', true);
if ($meta_box_value != "")
//将默认值替换为已保存的值
$meta_box['std'] = $meta_box_value;
echo '<input type="hidden" name="' . $meta_box['name'] . '_noncename" id="' . $meta_box['name'] . '_noncename" value="' . wp_create_nonce(plugin_basename(__FILE__)) . '" />';
//选择类型输出不同的html代码
switch ($meta_box['type']) {
case 'title':
echo '<h4>' . $meta_box['title'] . '</h4>';
break;
case 'text':
echo '<h4>' . $meta_box['title'] . '</h4>';
echo '<span class="form-field"><input type="text" size="40" name="' . $meta_box['name'] . '" value="' . $meta_box['std'] . '" /></span><br />';
break;
case 'textarea':
echo '<h4>' . $meta_box['title'] . '</h4>';
echo '<textarea id="seo-excerpt" cols="40" rows="2" name="' . $meta_box['name'] . '">' . $meta_box['std'] . '</textarea><br />';
break;
}
}
}

function create_meta_page_box() {
global $theme_name;
if (function_exists('add_meta_box')) {
add_meta_box('new-meta-boxes', '页面SEO设置', 'new_meta_page_boxes', 'page', 'normal', 'high');
}
}
function save_page_postdata($post_id) {
global $post, $new_meta_page_boxes;
foreach ($new_meta_page_boxes as $meta_box) {
if (!wp_verify_nonce($_POST[$meta_box['name'] . '_noncename'], plugin_basename(__FILE__))) { //这里报错
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'] . ''];
if (get_post_meta($post_id, $meta_box['name'] . '') == "") add_post_meta($post_id, $meta_box['name'] . '', $data, true);
elseif ($data != get_post_meta($post_id, $meta_box['name'] . '', true)) update_post_meta($post_id, $meta_box['name'] . '', $data);
elseif ($data == "") delete_post_meta($post_id, $meta_box['name'] . '', get_post_meta($post_id, $meta_box['name'] . '', true));
}
}
add_action('admin_menu', 'create_meta_page_box');
add_action('save_post', 'save_page_postdata');

[一点优化]

上传图片

[一点优化]

[一点优化]

请问这个怎么处理啊
Notice: Undefined index: custom_title_noncename in /www/wwwroot/seoyh.net/wp-content/themes/bit/inc/gn/seo/admin-meta.php on line 62

[孙锡源]

数组判空，或者用三目运算在未定义时返回空字符串，例如：$_POST[$meta_box[‘name’] . ‘_noncename’] ?? ”

[一点优化]

不行！后台直接挂了

[孙锡源]

贴代码看看你咋写的。另外建议百度搜一下双问号的 php 语法，这是非常常用的语法糖，不过只支持 php 7.4 以上。如果你的代码运行在旧版 PHP 上的话，还是按常规的 if 判断或者全写形式的三目运算来吧

[作者]

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