WordPress开启HTTPS后正文图片改为HTTPS两种方法

方法一：通过主题的 functions.php 文件来批量替换

在主题文件的 functions.php（WP后台“外观”-“编辑”右侧可以找到）里加入如下代码（注意域名需要做相应修改）

/* 替换图片链接为 https */
/* 来源半夏小栈（https://www.banxia.me/995.html）： */
function https_image_replacer($content){
if( is_ssl() ){
/*已经验证使用 $_SERVER['SERVER_NAME']也可以获取到数据，但是貌似$_SERVER['HTTP_HOST']更好一点*/
$host_name = $_SERVER['HTTP_HOST'];
$http_host_name='http://'.$host_name.'/wp-content/uploads';
$https_host_name='https://'.$host_name.'/wp-content/uploads';
$content = str_replace($http_host_name, $https_host_name, $content);
}
return $content;
}
add_filter('the_content', 'https_image_replacer');

function replacehttp($content){
if( is_ssl() ){
$content = str_replace('http://域名/wp-content/uploads', 'https://域名/wp-content/uploads', $content);
}
return $content;
}
add_filter('the_content', 'replacehttp');

方法二：通过 SQL 语句进行正文的批量替换

UPDATE wp_posts SET post_content = replace(post_content, 'http://域名/wp-content/uploads','https://域名/wp-content/uploads');