MySQL日期时间在PHP上回显

Question

I want to show in my page that the database they were looking at was last modified on a certain date & time. I have the following code for that:

 $lastUpdate = $pdo->prepare("SELECT lastUpdate FROM bng WHERE lastUpdate IN 
                            (SELECT max(lastUpdate) FROM bng)");
$lastUpdate->execute();

As I mentioned in the title, I want to echo the result on my page, I tried:

<?php
echo '<p>Database Last Modified  on '.date("l, d F Y - h:i:s A",strtotime($lastUpdate)).'</p>';
?>

but it gives me the wrong data and an error message

Warning: strtotime() expects parameter 1 to be string,

Hope this question makes sense. Thanks in advance.

Answer 1

$lastUpdate is a PDO statement, not the value from the database. You need to call fetch() and then extract the value from the row.

$lastUpdate = $pdo->prepare("SELECT max(lastUpdate) AS lastUpdate FROM bng");
$lastUpdate->execute();
$row = $lastUpdate->fetch(PDO::FETCH_ASSOC);
echo '<p>Database Last Modified  on '.date("l, d F Y - h:i:s A",strtotime($row['lastUpdate'])).'</p>';