Php 在一页中显示特定年份的记录

我希望检索不同年份的记录，并在一个页面中显示特定年份的结果

因此，将$year变量作为年份数组是错误的？在没有任何聚合函数的情况下，GROUP BY子句永远都不是一个明智的选择。看你有没有遵循任何教程？

<?php
$hostname = "localhost";
$user     = "root";
$password = "";
$dbname = "abcd";

$conn = new mysqli($hostname, $user, $password, $dbname);   
$sql="SELECT YEAR(date) as year from events GROUP BY year";
        $row2 = mysqli_fetch_array(mysqli_query($conn,$sql));
        $result2 = $conn->query($sql);         
$eyear=$row2['year'];

$year="2017";

for ($counter = 1; $counter <=5; $counter++){
    echo'<p><a href="'.$eyear.'">'.$year.'</a></p>';
    $year--;
}

?>