将此筛选器添加到functions.php 文件根据需要进行更改。

function display_my_content( $content ) {
    if ( is_single() ) {
        $the_content = \'Before your content\';
        $the_content .= $content;
        $the_content .= \'After your content\';
        return $the_content;
    } else {
        return $content;
    }
}
add_filter( \'the_content\', \'display_my_content\' );