如何从变量生成数组并与另一个字符串连接 - PHP

所以我有一个变量$family.

$family = "mom dad sister brother";

我必须$f从变量中创建一个数组$family.像这样的东西

$f = array("mom", "dad", "sister", "brother");

我接下来的事情是$nice_family = "is nice";

期望的结果:妈妈很好,爸爸很好,妹妹很好,兄弟很好.

提前致谢!

$family = "mom dad sister brother";
$f = explode(' ', $family);
$nice = ' is nice';
echo $nice_family = implode($nice.', ' ,$f).$nice;