


PHP date and time application 10: Convert seconds into the format 'day, hour, minute and second'
In the previous article "PHP date and time application nine: Get the start and end dates of a certain week in a certain year", I introduced you how to get the start and end dates of a certain week in a certain year. This article continues Let me introduce to you how to convert a number of seconds into a specific format of days, hours, minutes and seconds.
For example, how to convert 200000 seconds into a specific format of days, hours, minutes and seconds?
Do you have any ideas for implementation?
The following is an implementation method I gave for your reference:
The PHP code is as follows:
<?php function convert_seconds($seconds) { $dt1 = new DateTime("@0"); $dt2 = new DateTime("@$seconds"); return $dt1->diff($dt2)->format('%a 天, %h 时, %i 分 %s 秒'); } echo convert_seconds(200000)."<br>";
The output result is:
There is a class that everyone needs to understand here, which is the DateTime class. (Recommended article: "How to use the datetime class in php? Introduction to the usage of datetime in php")
DateTime update log is as follows:
PHP7.2.0版本:DateTime 的类常量现在定义在 DateTimeInterface 上。 PHP7.0.0版本:新增常量:DATE_RFC3339_EXTENDED 和 DateTime::RFC3339_EXTENDED。 PHP5.5.0版本:实现 DateTimeInterface 接口。 PHP5.4.24版本:COOKIE 格式从 2 位数字表示年份(RFC 850) 修改为 4 位数字表示年份(RFC 1036)。 PHP5.2.2版本:DateTime 对象进行比较操作(comparison operators)的时候 可以正常工作了。 在之前的版本中,当使用 == 进行相等比较的时候, 所有的 DateTime 对象都会被视为是相等的。
Related introduction :
DateTime::add — 给一个 DateTime 对象增加一定量的天,月,年,小时,分钟 以及秒。 DateTime::__construct — 返回一个新的 DateTime 对象 DateTime::createFromFormat — 根据给定的格式解析日期时间字符串 DateTime::createFromImmutable — Returns new DateTime object encapsulating the given DateTimeImmutable object DateTime::createFromInterface — Returns new DateTime object encapsulating the given DateTimeInterface object DateTime::getLastErrors — 获取警告和错误信息 DateTime::modify — 修改日期时间对象的值 DateTime::__set_state — __set_state 魔术方法处理函数 DateTime::setDate — 设置 DateTime 对象的日期 DateTime::setISODate — 设置 ISO 日期 DateTime::setTime — 设置 DateTime 对象的时间 DateTime::setTimestamp — 以 Unix 时间戳的方式设置 DateTime 对象 DateTime::setTimezone — 设置 DateTime 对象的时区 DateTime::sub — 对一个 DateTime 对象减去一定量的 日、月、年、小时、分钟和秒。
Finally, I would like to recommend the latest and most comprehensive "PHP Video Tutorial"~ Come and learn!
The above is the detailed content of PHP date and time application 10: Convert seconds into the format 'day, hour, minute and second'. For more information, please follow other related articles on the PHP Chinese website!

PHPsessionstrackuserdataacrossmultiplepagerequestsusingauniqueIDstoredinacookie.Here'showtomanagethemeffectively:1)Startasessionwithsession_start()andstoredatain$_SESSION.2)RegeneratethesessionIDafterloginwithsession_regenerate_id(true)topreventsessi

In PHP, iterating through session data can be achieved through the following steps: 1. Start the session using session_start(). 2. Iterate through foreach loop through all key-value pairs in the $_SESSION array. 3. When processing complex data structures, use is_array() or is_object() functions and use print_r() to output detailed information. 4. When optimizing traversal, paging can be used to avoid processing large amounts of data at one time. This will help you manage and use PHP session data more efficiently in your actual project.

The session realizes user authentication through the server-side state management mechanism. 1) Session creation and generation of unique IDs, 2) IDs are passed through cookies, 3) Server stores and accesses session data through IDs, 4) User authentication and status management are realized, improving application security and user experience.

Tostoreauser'snameinaPHPsession,startthesessionwithsession_start(),thenassignthenameto$_SESSION['username'].1)Usesession_start()toinitializethesession.2)Assigntheuser'snameto$_SESSION['username'].Thisallowsyoutoaccessthenameacrossmultiplepages,enhanc

Reasons for PHPSession failure include configuration errors, cookie issues, and session expiration. 1. Configuration error: Check and set the correct session.save_path. 2.Cookie problem: Make sure the cookie is set correctly. 3.Session expires: Adjust session.gc_maxlifetime value to extend session time.

Methods to debug session problems in PHP include: 1. Check whether the session is started correctly; 2. Verify the delivery of the session ID; 3. Check the storage and reading of session data; 4. Check the server configuration. By outputting session ID and data, viewing session file content, etc., you can effectively diagnose and solve session-related problems.

Multiple calls to session_start() will result in warning messages and possible data overwrites. 1) PHP will issue a warning, prompting that the session has been started. 2) It may cause unexpected overwriting of session data. 3) Use session_status() to check the session status to avoid repeated calls.

Configuring the session lifecycle in PHP can be achieved by setting session.gc_maxlifetime and session.cookie_lifetime. 1) session.gc_maxlifetime controls the survival time of server-side session data, 2) session.cookie_lifetime controls the life cycle of client cookies. When set to 0, the cookie expires when the browser is closed.


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

WebStorm Mac version
Useful JavaScript development tools

mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function

DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software

SublimeText3 English version
Recommended: Win version, supports code prompts!
