php - 在回声 PHP 中使用回声

Question

在 PHP 中是否可以在已经包含文本的 echo 语句中使用 site_url？例如我可以改变：

$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

不，但为什么不只是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，并将像变量一样连接起来。