如何从 PHP 和 Cakephp 中的日期获取小时数？

How to get Hours from Date in PHP & Cakephp?

提问by chetanspeed511987

I want to get Only Hours From date by using PHP & Cakephp function.

我想通过使用 PHP 和 Cakephp 函数从日期中获取仅小时数。

$date = "2011-07-26 20:05:00";

$hours = ?

回答by Clement Herreman

Use the Datetimeclass (PHP 5.3 or higher).

使用Datetime类（PHP 5.3 或更高版本）。

$dt = DateTime::createFromFormat("Y-m-d H:i:s", "2011-07-26 20:05:00");
$hours = $dt->format('H'); // '20'

回答by ShoeLace1291

By hours I'm assuming you mean if the time is 8PM or 20:00 hours like it is in your time string then...

我假设你的意思是如果时间是晚上 8 点或 20:00 小时，就像它在你的时间字符串中那样......

$date = "2011-07-26 20:05:00";
$date = strtotime($date);
echo date('H', $date);

I'm not that familiar with PHP's date formats so you'll have to reference PHP.net for the correct formatting character for that.

我不太熟悉 PHP 的日期格式，因此您必须参考 PHP.net 以获得正确的格式字符。

回答by krishna Prasad

For 24-hour and 12-hour format, please check below code:

对于 24 小时和 12 小时格式，请检查以下代码：

    $date = "2011-07-26 20:05:00";
    echo $hours = date('G', strtotime($date)); // In 24-hour format of an hour without leading zeros
    echo '<br>';
    echo $hours = date('g', strtotime($date)); // 12-hour format of an hour without leading zeros
    // For current timestamp
    echo $hours = date('G'); // In 24-hour format of an hour without leading zeros
    echo '<br>';
    echo $hours = date('g'); //12-hour format of an hour without leading zeros

For reference please check: http://php.net/manual/en/function.date.php

供参考，请检查：http: //php.net/manual/en/function.date.php

回答by Affan

At php side you use date('H',strtotime($date));

在 php 端你使用 date('H',strtotime($date));

and at mysql side you can use DATE_FORMATE(NOW(),'%H')to get only hour

在 mysql 方面，您只能使用DATE_FORMATE(NOW(),'%H')一个小时

$datecontains date like '2014/08/14' format

$date包含类似“2014/08/14”格式的日期

To convert date like '2014/08/14' to '14-08-2014' you have to use

要将“2014/08/14”之类的日期转换为“14-08-2014”，您必须使用

date('d-m-Y',strtotime($date));

OR use

或使用

date('d-m-Y',strtotime(str_replace('/','-',$date)))

回答by Gvidon Shmavonyan

Best way to use DateTimeclass

使用DateTime类的最佳方法

$my_sql_date = "2011-07-26 20:05:00";
$date_time_obj = new DateTime($my_sql_date);
echo $date_time_obj->format('H');

回答by Jose Luis

$pattern = '[0-9]{2}:[0-9]{2}'; preg_match('/'.$pattern.'/', '2011-07-26 20:05:00', $matches); echo $matches[0];

$pattern = '[0-9]{2}:[0-9]{2}'; preg_match('/'.$pattern.'/', '2011-07-26 20:05:00', $matches); echo $matches[0];