UNIX_TIMESTAMP结果不正确

Question

我需要在DB中检查日期+ 1个月的正确日期。我试试：

$todayDate = date("Y-m-d");
$dateOneMonthAdded = strtotime(date("Y-m-d", strtotime($todayDate)) . "+1 month");

$result = mysql_query('SELECT UNIX_TIMESTAMP("date") AS date FROM followform WHERE id = "28"') or die(mysql_error());  
$date = mysql_fetch_assoc($result);

if ($dateOneMonthAdded == $date['date']) echo 'nice';

但是$ date ['date'] == 0

如果我使用 - mysql_query('SELECT date FROM followform WHERE id = "28"')

$date['date'] == 2012-08-13

我的错误在哪里？

Answer 1

UNIX_TIMESTAMP("date")应为UNIX_TIMESTAMP(date)。在那里有引号，它试图将文字字符串“date”转换为时间戳。

Answer 2

从查询中的"函数中删除双引号unix_timestamp。它应该是：

SELECT UNIX_TIMESTAMP(date) AS date FROM followform WHERE id = "28"