Question

这似乎是一个简单的问题，但我似乎无法解决这个问题。下面，我有一个从表单返回的结果集。在大多数情况下，一切都按预期工作。最后一步是我想通过变量$ gbl_timestamp对结果进行排序，以便最新的条目是第一个。思考？

    <?php 
    include($_SERVER["DOCUMENT_ROOT"]."/wrappers/code-s.wrp.php"); 
    include($_SERVER["DOCUMENT_ROOT"]."/php/mobile-switch.php"); 
    require_once("../tim/includes/db_connection.php"); ?>
    <?php
    // 2. Perform database query
    $query  = "SELECT * ";
    $query .= "FROM assessment_info ";
    $result = mysqli_query($connection, $query);
    // Test if there was a query error
    if (!$result) {
        die("Database query failed.");
    }
    ?>

    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">

    <html lang="en">
    <head>
        <title>Results</title>
    </head>
    <body>

        <ol>
        <?php
            // 3. Use returned data (if any)
            while($results = mysqli_fetch_assoc($result)) {
                // output data from each row
        ?>
                <li><?php print "<strong>Timestamp:</strong>" . $gbl_timestamp?>        
                <br />
                <?php print "<strong>Department:</strong> ".       $results["department"] . "
                 <br /><strong>Participant</strong>: " . $results["participant"] . " <br /> <strong>Activity Performed:</strong> " . $results["activity"] . "
                 <br /><strong>Location:</strong> " . $results["location"] . " <br /><strong>Average number of Injuries:</strong> " . $results["recordable_injuries"] . " in the " . $results["recordable_injuries_timeframe"] . ""; ?></li>
      <?php
            }
        ?>
        </ol>

        <?php
          // 4. Release returned data
          mysqli_free_result($result);
        ?>
    </body>
</html>

<?php
  // 5. Close database connection
  mysqli_close($connection);
?>

Answer 1

一种解决方案是对变量使用order by子句（如果它存在于表中。

）

另一个解决方案是将每个{"num_pages": 13196, "num_results": 13196, "results": [{"is_automated": false, "name": "ubuntu", "is_trusted": false, "is_official": true, "star_count": 4681, "description": "Ubuntu is a Debian-based Linux operating system based on free software."}], "page_size": 1, "query": "ubuntu", "page": 1}放在一个数组中，并将变量作为索引并对数组进行排序。

Answer 2

这是解决方案。我在数据库中添加了一个新列，并使用phpMyAdmin中的内置时间戳字段。所以现在我需要添加到我的查询中：

$query  = "SELECT * FROM assessment_info ORDER BY timestamp desc limit 0,1";

通过变量

2 个答案: