PHP实现时间轴函数代码_PHP
本文将介绍如何实现基于时间轴的时间的转换。
首先我们要明白时间的几个函数:
time():返回当前的 Unix 时间戳
date():格式化一个本地时间/日期。
应用举例:
复制代码 代码如下:
date("Y-m-d H:i:s",time()); //格式化当前时间,输出:2011-9-24 07:27:35
strtotime():将任何英文文本的日期时间描述解析为 Unix 时间戳。
应用举例:
复制代码 代码如下:
echo strtotime("+1 day"), "\n"; //输出1天前的时间戳:1316932222
date_default_timezone_set():设定要用的默认时区。
一般我们设置北京时间:date_default_timezone_set("PRC");
理解上面几个函数后我们来写时间轴函数:
该函数的原理就是将系统当前时间与目标时间比较,得到一个差值,再将差值与时间范围(转换成秒)比较,根据其处在时间轴的范围输出不同的结果(如:5分钟前)。为了便于计算,我们将时间都转换成Unix时间戳。
复制代码 代码如下:
function tranTime($time) {
$rtime = date("m-d H:i",$time);
$htime = date("H:i",$time);
$time = time() - $time;
if ($time $str = '刚刚';
}
elseif ($time $min = floor($time/60);
$str = $min.'分钟前';
}
elseif ($time $h = floor($time/(60*60));
$str = $h.'小时前 '.$htime;
}
elseif ($time $d = floor($time/(60*60*24));
if($d==1)
$str = '昨天 '.$rtime;
else
$str = '前天 '.$rtime;
}
else {
$str = $rtime;
}
return $str;
}
函数tranTime()中的参数$time必须为Unix时间戳,如果不是请先用strtotime()将其转换成Unix时间戳。上面的代码一看就明白了,不用再多述。
调用函数,直接输出:
复制代码 代码如下:
$times="1316932222";
echo tranTime($times);

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

Alipay PHP...

JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,

Session hijacking can be achieved through the following steps: 1. Obtain the session ID, 2. Use the session ID, 3. Keep the session active. The methods to prevent session hijacking in PHP include: 1. Use the session_regenerate_id() function to regenerate the session ID, 2. Store session data through the database, 3. Ensure that all session data is transmitted through HTTPS.

The application of SOLID principle in PHP development includes: 1. Single responsibility principle (SRP): Each class is responsible for only one function. 2. Open and close principle (OCP): Changes are achieved through extension rather than modification. 3. Lisch's Substitution Principle (LSP): Subclasses can replace base classes without affecting program accuracy. 4. Interface isolation principle (ISP): Use fine-grained interfaces to avoid dependencies and unused methods. 5. Dependency inversion principle (DIP): High and low-level modules rely on abstraction and are implemented through dependency injection.

How to debug CLI mode in PHPStorm? When developing with PHPStorm, sometimes we need to debug PHP in command line interface (CLI) mode...

How to automatically set the permissions of unixsocket after the system restarts. Every time the system restarts, we need to execute the following command to modify the permissions of unixsocket: sudo...

Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.

Sending JSON data using PHP's cURL library In PHP development, it is often necessary to interact with external APIs. One of the common ways is to use cURL library to send POST�...
