Question

我在这里有一个过滤器：

$today = time() - (3600*24);
$Yday = time() - (3600*48);


$getMsgsToday = mysql_query("SELECT * FROM users_msgs WHERE uID = '$USER' AND date > $today ORDER by date DESC LIMIT 10");


$getMsgsYday = mysql_query("SELECT * FROM users_msgs WHERE uID = '$USER' AND date BETWEEN $Yday AND $today ORDER by date DESC LIMIT 10");

哪个不能正常工作。如果时间是01:00，它将在昨天的“今天”日期显示，例如23：00,22：00,21：00，并且在第一天的01:00之后将首先显示在“昨天”之下

我如何解决这个问题呢？因此00:01是今天，23：59是昨天..我认为我做错了只做时间（） - （3600 * 24）..我该怎么办？

Answer 1

没有必要在PHP中计算这些东西，在SQL本身中进行。

-- Today's messages: round the "date" field to be only a date, not a timestamp, then compare
$getMsgsToday = mysql_query("SELECT * FROM users_msgs WHERE uID = '$USER' AND cast(`date` as date) = cast(now() as date) ORDER by date DESC LIMIT 10");

-- Yesterday's messages: round the "date" field to be only a date, then compare to today - 1 day
$getMsgsYday = mysql_query("SELECT * FROM users_msgs WHERE uID = '$USER' AND cast(`date` as date) = date_sub(cast(now() as date), interval 1 day) ORDER by date DESC LIMIT 10");

大多数数据库中的日期操作功能都比PHP更容易使用，因此您不必为生活带来困难：）

Answer 2

你可能会收到错误，因为我们昨天有DST。使用下面的代码，这被考虑在内。你永远不应该自己计算时间戳。这很容易出错。

$now       = time();                 // gives timestamp of right now
$today     = strtotime('today')      // gives timestamp of today 00:00
$yesterday = strtotime('yesterday'); // gives timestamp for yesterday 00:00
$ts24hago  = strtotime('-24 hours'); // gives timestamp 24 hours ago

我同意El Yobo的说法，从MySql中更容易做到这一点。

Answer 3

time（）将基于当前到第二个时间戳，您需要当前/前几天的开头。我建议使用mktime代替，php网站上有很多例子。

Answer 4

$today = date('Y-m-d',time());
$yesterday = date('Y-m-d',time() - 3600);

Answer 5

我想你想要这个。希望我能帮到你......

//Date format(YYYY-MM-DD) change to timestamp 
function getTS($date){
    if (false ===preg_match('/\d{4}-\d{2}-\d{2}/i', $date))
        return 0;
    list($year,$month,$day) = explode('-',$date);
    return mktime(0,0,0,$month,$day,$year);
}
//Get Today and Yesterday Timestamp.
$today = getTS(date('Y-m-d'));
$Yday = getTS(date('Y-m-d',strtotime('yesterday')));

应用sql脚本。

$getMsgsToday = mysql_query("SELECT * FROM users_msgs WHERE uID = '{$USER}' AND date > {$today} ORDER by date DESC LIMIT 10");

$getMsgsYday = mysql_query("SELECT * FROM users_msgs WHERE uID = '{$USER}' AND date BETWEEN {$Yday} AND {$today} ORDER by date DESC LIMIT 10");

Answer 6

$today_start = strtotime(date('Y-m-d 00:00:00'));
$today_end = strtotime(date('Y-m-d 23:23:59'));
$yesterday_end = $today_start - 1;
$yesterday_start = $yesterday_end - 86399;

PHP：今天/昨天制作过滤器

6 个答案: