在echo PHP中使用echo

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>';

$data['following']='youarnotfollowing'$名字；

到

$data['following']='youarnotfollowing'$名字。”

$data['following']='younotfollowing'$姓名；

否，但为什么不将返回值串联起来，而不是尝试

回显它呢

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

$data['following']='youarnotfollowing'$名字。”
您可以在字符串串联中使用函数调用：

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

$data['following']='youarnotfollowing'$名字；

函数将返回字符串，它将像变量一样进行连接。
否。但是您可以像使用
$name
一样使用字符串连接。啊，我明白了，谢谢您的简单解释
$data['following'] = 'You are not following ' . $name . ' <a href="' . site_url("user/follow") . '">Follow this user</a>

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