首先，创建一个使用get_shortcode_regex 获取替换了短代码的帖子的帖子内容。

请注意，任何其他shoertcode都将保持不变

function get_replaced_sourcecode_sc( $post ) {
  if ( empty($post) ) global $post;
  if ( empty($post) || ! isset($post->post_content) ) return false;
  $content = $post->post_content;
  if (
    preg_match_all( \'/\'. get_shortcode_regex() .\'/s\', $post->post_content, $matches )
    && array_key_exists( 2, $matches ) && in_array( \'sourcecode\', $matches[2] )
  ) {
    foreach ( $matches[2] as $i => $sc ) {
      if ( $sc == \'sourcecode\' )
        $now = $matches[0][$i];
        $replace = do_shortcode($now);
        $content = str_replace( $now, $replace, $content );
    }
  }
  return $content;
}

现在在您的functions.php 您还可以添加以下代码：

function replaced_sourcecode_sc_all() {

   $already = get_transient(\'replaced_sourcecode\') ? : array();

   $all = get_posts(\'nopaging=1post_type=post\');

    if ( ! empty($all) ) {

      if ( count($all) == count($already) ) {
         error_log(\'replaced_sourcecode_sc_all already done its work\');
         return;
      }

      $done = array();

      foreach ( $all as $one ) {

        if ( in_array($one->ID, $already) ) continue;

        $content = get_replaced_sourcecode_sc( $post );

        $post = array(\'ID\' => $one->ID, \'post_content\' => $content);

        $do = wp_update_post( $post );
        if ( $do ) $done[] = $do;

      }

      set_transient(\'replaced_sourcecode\', $done);

    }
}

add_action(\'shutdown\', \'replaced_sourcecode_sc_all\');

现在，启用WP日志记录，然后访问您的站点2到3次。检查错误日志，如果您发现字符串“replaced\\u sourcecode\\u sc\\u all have done it works”，您可以删除该函数（或者简单地注释掉“add\\u action”行）。