Question

我正在设计一个简单的博客，首先我读了6条记录（图片+标题），其余的我想读7到10。首先我使用此代码：

$sql = "SELECT * FROM blogcontents ORDER BY bid DESC";
$result = mysql_query($sql) or die("Error Query [" . $sql . "]");
$num_rows = mysql_num_rows($result);

for ($i = 0; $i < 6; $i++)
    {
    $row = mysql_fetch_array($result);
    echo '<li class="navblog"><a href="blogpage.php?id= ' . $row['bid'] . '"><div class="blogwrap"><img class="img-thumbnail img-responsive bphoto" src="images/blog/' . $row['btimg'] . '" alt="Smiley face" height="200" width="300"><span class="sizeoftitle">' . $row['btitle'] . '</span></div></a></li>';
    }

但我不知道如何从7到10阅读。

Answer 1

您可以使用limit和offset（而不是循环限制）来检索所需的行有6行的第一次选择

"SELECT * FROM blogcontents ORDER BY bid DESC limit 6 ";

和第二个选择，其他4行从5开始（offeset为0）

"SELECT * FROM blogcontents ORDER BY bid DESC limit 5,4 ";

或在你的第一次循环后，其他人

 while (  $row = mysql_fetch_array($result))
  {
   echo '<li class="navblog"><a href="blogpage.php?id= ' . $row['bid'] . '"><div class="blogwrap"><img class="img-thumbnail img-responsive bphoto" src="images/blog/' . $row['btimg'] . '" alt="Smiley face" height="200" width="300"><span class="sizeoftitle">' . $row['btitle'] . '</span></div></a></li>';
 }

根据您在评论中的代码，这应该有效

$sql2 = "SELECT * 
          FROM blogcontents
           LIMIT  5, 4"; 
           $result2 = mysql_query($sql2) or die("Error Query [" . $sql2 . "]");

你不需要循环..你可以使用

while (  $row = mysql_fetch_array($result2)) { 
          echo '<p><a href="blogpage.php?id= ' . $row['bid'] . '">' . $row['btitle'] . '</a></p>'; 
 } ?>

Answer 2

Explain By Image

请查看我在那里解释我的问题的图片......

Answer 3

result_array（）函数将mysql结果格式化为php数组。

    function result_array($sql)
    {
        $result = array();
        $query = mysql_query($sql) or die("Error: " . mysql_error());
        while ($data = mysql_fetch_array($query)) {
            $result[] = $data;
        }
        $rows = count($result);
        if ($rows) {
            $total_global_rows = count($result);
            $total_inner_rows = count($result[0]);
            $count_total_inner_rows = $total_inner_rows / 2;

            for ($i = 0; $i < $total_global_rows; $i++) {
                for ($j = 0; $j < $count_total_inner_rows; $j++) {
                    unset($result[$i][$j]);
                }
            }
        }
        return $result;
    }

    $sql = "SELECT * FROM blogcontents ORDER BY bid DESC LIMIT 10";

    $blogPosts = result_array($sql);

    //print till 6th and break the loop
    foreach ($blogPosts as $key => $row) {
        echo '<li class="navblog"><a href="blogpage.php?id= ' . $row['bid'] . '"><div class="blogwrap"><img class="img-thumbnail img-responsive bphoto" src="images/blog/' . $row['btimg'] . '" alt="Smiley face" height="200" width="300"><span class="sizeoftitle">' . $row['btitle'] . '</span></div></a></li>';
        if ($key > 5) {
            break;
        }
    }

    //print from 7th to the end
    foreach ($blogPosts as $key => $row) {
        if ($key > 5) {
            echo $row['btitle'];
        }
    }

MySQL选择区域

3 个答案: