【梅开二度】解决WordPress修改固定链接后页面404问题
技术宅之前的网址固定链接样式是/%postname%.html，后来因为其他原因，技术宅将固定链接样式换成了/%post_id%，但是因为技术宅站点被搜索引擎收录了，新建的文章没问题，但是用户从搜索引擎收录的旧链接访问就会场产生404，这样不利于站点优化。有修改网站固定链接后已收录页面404的站长可以使用以下代码：$rewrite_config = array();$rewrite_config['highpriority'] = true ;
$rewrite_config['rewrite'] = array();
$rewrite_config['oldstructure'] = "/%postname%.html";
function wpdaxue_pm_the_posts($post) {
global $wp;
global $wp_rewrite;
global $rewrite_config;
$rewrite_config['rewrite'] = $wp_rewrite->generate_rewrite_rule($rewrite_config['oldstructure'], false, true, true, true);
if ($post != NULL && is_single() && $rewrite_config['oldstructure'] != $wp_rewrite->permalink_structure) {
if (array_key_exists($wp->matched_rule, $rewrite_config['rewrite'])) {
// ok, we need to generate a 301 Permanent redirect here.
header("HTTP/1.1 301 Moved Permanently", TRUE, 301);
header('Status: 301 Moved Permanently');
$permalink = get_permalink($post->ID);
if (is_feed()) {
$permalink = trailingslashit($permalink) . 'feed/';
}
header("Location: ". $permalink);
exit();
}
}
return $post;
}
function wpdaxue_pm_post_rewrite_rules($rules) {
global $wp_rewrite;
global $rewrite_config;
$oldstruct = $rewrite_config['oldstructure'];
if ($oldstruct != NULL && $oldstruct != $wp_rewrite->permalink_structure) {
$rewrite_config['rewrite'] = $wp_rewrite->generate_rewrite_rule($oldstruct, false, true, true, true);
if ($rewrite_config ['highpriority'] == true) {
return array_merge($rewrite_config['rewrite'], $rules);
} else {
return array_merge($rules, $rewrite_config['rewrite']);
}
}
return $rules;
}
add_filter('the_posts', 'wpdaxue_pm_the_posts', 20);
add_filter('post_rewrite_rules', 'wpdaxue_pm_post_rewrite_rules');
http://cdn.u1.huluxia.com/g4/M02/FF/E6/rBAAdl80edmAdi-zAAAF3LZejt8220.png
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