Remove db $conn from MYSQLI query

Question

I'm currently learning mysqli and systematically replacing all of my deprecated queries throughout my script.

I have this query:

<?php
$link = mysqli_connect("host", "user", "pass", "name");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
$query = "SELECT * FROM pins WHERE id='$pinDetails->id'";
$result = mysqli_query($link, $query);
/* associative array */
$row = mysqli_fetch_array($result, MYSQLI_ASSOC);
$feature = $row['featured'];
/* free result set */
mysqli_free_result($result);
/* close connection */
mysqli_close($link);
?>

Which I can echo throughout the page as <?php echo $row['date_featured']; ?> <?php echo $row['date_featured']; ?>

My question is how do I rework the code to remove the connection? I don't want to keep connecting to the db in every query when I have a general connection include at the top of the page.

Answer 1

实际上，此页面需要连接才能基于SQL数据库进行操作，您能否进一步解释一下，删除连接意味着什么，您可以使用INCLUDE（）;