如何多次回显一个字母，为每个新打印更改多个变量？

大家好！这是我在 stackoverflow 中的第一个问题，所以我希望我能很好地遵守规则。:)

对于我的 PHP 类，我有一个让我感到困难的练习：其中包含大约 4 个变量的文本，所有变量都存储在数组中（每个变量一个数组，每个变量 3 个值）。每个数组的位置 [0] 在第一个回显文本中，每个数组的位置 [1] 在第二个文本中，依此类推。
如何使用存储在数组中的所有值回显文本 3 次？在代码中，我必须只使用正文 1 次。

$u_name = array('student' => 'Joe','lecturer' => 'Kate', 'assistant' => 'Martin');
$course_name = array('PHP', 'CSS', 'HTML');
$role = array('student', 'lecturer', 'assistant');

echo "Hi," . $u_name['student'] . "! You've been approved to take part in course " . $course_name[0] . " as a " . $role[0] . ". The course " .  $course_name[0] . " will last for two days.";
echo "<br>";
echo "Hi," . $u_name['lecturer'] . "! You've been approved to take part in course " . $course_name[1] . " as a " . $role[1] . ". The course " .  $course_name[1] . " will last for two days.";
echo "<br>";    
echo "Hi," . $u_name['assistant'] . "! You've been approved to take part in course " . $course_name[2] . " as a " . $role[2] . ". The course " .  $course_name[2] . " will last for two days.";

这是我自己做的，但正如你在代码中看到的，我有 3 倍的正文。
先感谢您。

回答

$counter = 0;
foreach($u_name as $key=>$value){
    echo "Hi, " . $value . "! You've been approved to take part in course " . $course_name[$counter] . " as a " . $role[$counter] . ". The course " .  $course_name[$counter] . " will last for two days.";
    echo "<br>";
    $counter++;
}