如何使用preg_replace将一小时添加到时间值? [英] How to use preg_replace to add one hour to a time value?

查看:119
本文介绍了如何使用preg_replace将一小时添加到时间值?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我有一个页面显示时间如下: 10:00 am 。我需要花些时间,给他们增加一个小时。我提出了一个正则表达式来处理自己找到时间,我只是不知道下一步该怎么做。这是我的正则表达式: ^(1 [012] | [1-9]):([0-5] [0-9])(?i)(am | pm)^

任何帮助将不胜感激。 -Austin

解决方案

你可以这样做,不需要任何正则表达式:

  $ time = '10:00am'; 
list($ hour,$ min)= explode(':',$ time);
echo date('h:ia',mktime((int)$ hour + 1,(int)$ min));

转换为 int am ,以便分钟部分可用于 mktime



如果您需要使用正则表达式(例如,您正在搜索更大字符串内的时间),则可以使用以下代码:

 的preg_match('〜^(1 [012] | [1-9]):([0-5] [0-9])(ⅰ)(AM | PM) ^〜',$ str,$ matches); 
echo date('h:ia',mktime($ match [1] + 1,$ match [2]));

而且,如果您需要在原始字符串内替换那些时间,您可以使用 preg_replace_callback

  $ time = preg_replace_callback('〜( 1 [012] | [1-9]):([0-5] [0-9])(?i)(am | pm)〜',
function($ matches){
返回日期('h:ia',mktime($ matches [1] + 1,$ matches [2]));
},
$ time);

适用于PHP 5.2及更高版本的版本:

<$ ([0-5] [0-9])(?i)(am | pm(p))。 )〜',
create_function(
'$ matches',
'return date(\'h:ia\',mktime($ matches [1] + 1,$ matches [ 2]));'
},
$ time);


I have a page that shows times on it like this: 10:00am. I need to take those times, and add one hour to them. I have come up with a regular expression to deal with finding the times themselves, I just don't know what to do next. This is the regex I have: ^(1[012]|[1-9]):([0-5][0-9])(?i)(am|pm)^.
Any help would be greatly appreciated. -Austin

解决方案

You can do something like this, don't need any regexes:

$time = '10:00am';
list($hour, $min) = explode(':', $time);
echo date('h:ia', mktime((int)$hour + 1, (int)$min));

Casting to int gets rid of the trailing am so that the minutes part can be used in mktime.

If you need to use the regex (for example, you are searching for times inside a larger string), you can use this:

preg_match('~^(1[012]|[1-9]):([0-5][0-9])(?i)(am|pm)^~', $str, $matches);
echo date('h:ia', mktime($match[1] + 1, $match[2]));

And, if you need to replace those times inside the original string, you can use preg_replace_callback:

$time = preg_replace_callback('~(1[012]|[1-9]):([0-5][0-9])(?i)(am|pm)~', 
            function($matches) {
                return date('h:ia', mktime($matches[1] + 1, $matches[2]));
            },
        $time);

Version for PHP 5.2 and older:

$time = preg_replace_callback('~(1[012]|[1-9]):([0-5][0-9])(?i)(am|pm)~', 
            create_function(
                '$matches',
                'return date(\'h:ia\', mktime($matches[1] + 1, $matches[2]));'
            },
        $time);

这篇关于如何使用preg_replace将一小时添加到时间值?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

查看全文
登录 关闭
扫码关注1秒登录
发送“验证码”获取 | 15天全站免登陆