mysql - while 循环运行两次？

Question

为什么这个 while 循环在移动到下一个条目之前显示内容两次？我有复视了!双重条目，而不仅仅是单个条目的列表。顺便说一下，我在 Wordpress 中使用 transient 数据。

输出显示如下:

name1
name1
name2
name2
name3
name3

我试图让它像这样渲染:

name1
name2
name3

<?php

$result = mysql_query("SELECT * FROM wp_options WHERE option_name LIKE '%fparent_name_%' ORDER BY option_id DESC");

while ($row = mysql_fetch_array($result))
{
   $op_name =  $row['option_name']; // get the value of the option
   $op_time = substr($op_name, -10); // trim the option to the epoch time
   $the_name = get_transient('fparent_name_'.$op_time);  // get the name with epoch added

   $phptime = new DateTime("@$op_time");  // convert UNIX timestamp to PHP DateTime
   echo $the_name." - Submitted: ".$phptime->format('n/j/Y - g:ia'); // print the good stuff
?>
   <form name="more" action="" method="post" id="more">
      <input type="hidden" value="<?=$op_time;?>" name="timestamp" id="timestamp">
      <input type="submit" value="See Details" name="details" id="details">
   </form>
   <br>
<?php 
}
?>

Answer 1

mysql_fetch_array() 返回 MySQL 结果的关联数组和基于数字的数组。使用mysql_fetch_assoc()相反。

Please, don't use mysql_* functions in new code 。它们不再维护and are officially deprecated 。请参阅red box ？了解 prepared statements相反，并使用 PDO或MySQLi -this article将帮助您决定哪个。如果您选择 PDO，here is a good tutorial .