do_shortcode([espro-slider id=21]) 将处理短代码并返回结果。The Codex describes exactly this example:
// Use shortcode in a PHP file (outside the post editor).
echo do_shortcode( \'[gallery]\' );
您通常也可以直接调用回调：
function generic_shortcode_callback($atts,$content) {
return "Yay! ".$content;
}
echo generic_shortcode_callback(\'\',\' Me!\');
VS：
function generic_shortcode_callback($atts,$content) {
return "Yay! ".$content;
}
add_shortcode(\'yay\',\'generic_shortcode_callback\');
$sc = do_shortcode(\'[yay]Me[/yay]\');
echo $sc;
