在echo PHP中使用echo

Question

在PHP中，可以在已经包含文本的echo语句中使用site_url吗？例如，我是否可以更改：

$data['following'] = 'You are not following ' . $name . ' <a href="http://raptor.kent.ac.uk/proj/co539/microblog/jlo21/index.php/user/follow/' . $name . ' ">Follow this user</a>';

至

$data['following'] = 'You are not following ' . $name . ' <a href="<?php echo site_url("user/follow"); ?>">Follow this user</a>

Answer 1

没有，但是为什么不直接连接返回值而不是尝试echo它呢？

$data['following'] = 'You are not following ' . $name . ' <a href="' . site_url("user/follow") . '">Follow this user</a>

Answer 2

$data['following'] = 'You are not following ' . $name . ' <a href="' . site_url("user/follow") . '">Follow this user</a>;

Answer 3

您可以在字符串连接中使用函数调用：

$data['following'] = 'You are not following ' . $name . ' <a href="'. site_url("user/follow") . '">Follow this user</a>';

该函数将返回字符串，并且它将像变量一样连接在一起。