search
HomeBackend DevelopmentPHP TutorialPHP date format a local time/date_PHP tutorial

date

(PHP 4, PHP 5)

date — Format a local time/date

Description

string date ( string $format [, int $timestamp ] )

Returns a string generated by integer timestamp according to the given format string. If no timestamp is given, the local current time is used. In other words, timestamp is optional and the default value is time().

Tip

Since PHP 5.1.1 there are several useful constants for specifying the format parameter in standard date/time formats.

Tip

Since PHP 5.1, the timestamp of the time when the request was initiated is saved in $_SERVER['REQUEST_TIME'].

Note:

The typical range of valid timestamps is December 13, 1901 20:45:54 GMT to January 19, 2038 03:14:07 GMT. (This range conforms to the minimum and maximum values ​​of 32-bit signed integers). However, prior to PHP 5.1 this range was limited to January 1, 1970 to January 19, 2038 on some systems such as Windows.

Note:

To convert the time represented by a string into a timestamp, strtotime() should be used. In addition, some databases have functions to convert their time format into timestamps (such as MySQL's » UNIX_TIMESTAMP function).

The format string can recognize the following format parameter string
format character Description Return value example
--- ---
d The day of the month, a 2-digit number with leading zeros 01 to 31
D Day of the week, text representation, 3 letters Mon to Sun
j The day of the month, without leading zeros 1 to 31
l (lower case letter of “L”) Day of the week, complete text format Sunday to Saturday
N The day of the week represented by numbers in ISO-8601 format (newly added in PHP 5.1.0) 1 (meaning Monday) to 7 (meaning Sunday)
S The English suffix after the day of the month, 2 characters st, nd, rd or th. Can be used with j
w The day of the week, represented by numbers 0 (meaning Sunday) to 6 (meaning Saturday)
z Day of the year 0 to 366
Week --- ---
W The week number of the year in ISO-8601 format, each week starts on Monday (new in PHP 4.1.0) Example: 42 (the 42nd week of the year)
Month --- ---
F Month, complete text format, such as January or March January to December
m The month represented by the number, with leading zeros 01 to 12
M Month represented by three-letter abbreviation Jan to Dec
n Numeric month, without leading zeros 1 to 12
t The number of days in a given month 28 to 31
Year --- ---
L Whether it is a leap year If it is a leap year, it is 1, otherwise it is 0
o ISO-8601 format year number. This is the same value as Y , except that if the ISO week number (W) belongs to the previous or next year, that year is used. (New in PHP 5.1.0) Examples: 1999 or 2003
Y Full 4-digit year For example: 1999 or 2003
y 2-digit year For example: 99 or 03
Time --- ---
a Lowercase AM and PM values am or pm
A Capital AM and PM values AM or PM
B Swatch Internet Standard Time 000 to 999
g Hour, 12-hour format, no leading zeros 1 to 12
G Hour, 24-hour format, no leading zeros 0 to 23
h Hour, 12 hour format, with leading zeros 01 to 12
H Hour, 24-hour format, with leading zeros 00 to 23
i Minutes with leading zeros 00 to 59>
s Seconds, with leading zeros 00 to 59>
Time Zone --- ---
e Time zone identifier (new in PHP 5.1.0) Example: UTC, GMT, Atlantic/Azores
I Whether it is daylight saving time 1 if it is daylight saving time, 0 otherwise
O Hours from Greenwich Mean Time Example: +0200
P The difference from Greenwich Mean Time (GMT), there is a colon separating hours and minutes (newly added in PHP 5.1.3) Example: +02:00
T The time zone where this machine is located For example: EST, MDT ([Translator's Note] In complete text format under Windows, such as "Eastern Standard Time", the Chinese version will display "China Standard Time").
Z Time difference offset in seconds. Time zone offsets west of UTC are always negative, and time zone offsets east of UTC are always positive. -43200 to 43200
Full date/time --- ---
c Date in ISO 8601 format (new in PHP 5) 2004-02-12T15:19:21+00:00
r Date in RFC 822 format Example: Thu, 21 Dec 2000 16:01:07 +0200
U Number of seconds since the Unix epoch (January 1 1970 00:00:00 GMT) See time()

Unrecognized characters in the format string will be displayed unchanged. The Z format always returns 0 when using gmdate().


www.bkjia.comtruehttp: //www.bkjia.com/PHPjc/447017.htmlTechArticledate (PHP 4, PHP 5) date formats a local time/date description stringdate(string$format[, int$timestamp] ) returns a string generated by converting the integer timestamp according to the given format string...
Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Explain how load balancing affects session management and how to address it.Explain how load balancing affects session management and how to address it.Apr 29, 2025 am 12:42 AM

Load balancing affects session management, but can be resolved with session replication, session stickiness, and centralized session storage. 1. Session Replication Copy session data between servers. 2. Session stickiness directs user requests to the same server. 3. Centralized session storage uses independent servers such as Redis to store session data to ensure data sharing.

Explain the concept of session locking.Explain the concept of session locking.Apr 29, 2025 am 12:39 AM

Sessionlockingisatechniqueusedtoensureauser'ssessionremainsexclusivetooneuseratatime.Itiscrucialforpreventingdatacorruptionandsecuritybreachesinmulti-userapplications.Sessionlockingisimplementedusingserver-sidelockingmechanisms,suchasReentrantLockinJ

Are there any alternatives to PHP sessions?Are there any alternatives to PHP sessions?Apr 29, 2025 am 12:36 AM

Alternatives to PHP sessions include Cookies, Token-based Authentication, Database-based Sessions, and Redis/Memcached. 1.Cookies manage sessions by storing data on the client, which is simple but low in security. 2.Token-based Authentication uses tokens to verify users, which is highly secure but requires additional logic. 3.Database-basedSessions stores data in the database, which has good scalability but may affect performance. 4. Redis/Memcached uses distributed cache to improve performance and scalability, but requires additional matching

Define the term 'session hijacking' in the context of PHP.Define the term 'session hijacking' in the context of PHP.Apr 29, 2025 am 12:33 AM

Sessionhijacking refers to an attacker impersonating a user by obtaining the user's sessionID. Prevention methods include: 1) encrypting communication using HTTPS; 2) verifying the source of the sessionID; 3) using a secure sessionID generation algorithm; 4) regularly updating the sessionID.

What is the full form of PHP?What is the full form of PHP?Apr 28, 2025 pm 04:58 PM

The article discusses PHP, detailing its full form, main uses in web development, comparison with Python and Java, and its ease of learning for beginners.

How does PHP handle form data?How does PHP handle form data?Apr 28, 2025 pm 04:57 PM

PHP handles form data using $\_POST and $\_GET superglobals, with security ensured through validation, sanitization, and secure database interactions.

What is the difference between PHP and ASP.NET?What is the difference between PHP and ASP.NET?Apr 28, 2025 pm 04:56 PM

The article compares PHP and ASP.NET, focusing on their suitability for large-scale web applications, performance differences, and security features. Both are viable for large projects, but PHP is open-source and platform-independent, while ASP.NET,

Is PHP a case-sensitive language?Is PHP a case-sensitive language?Apr 28, 2025 pm 04:55 PM

PHP's case sensitivity varies: functions are insensitive, while variables and classes are sensitive. Best practices include consistent naming and using case-insensitive functions for comparisons.

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

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

Hot Tools

Atom editor mac version download

Atom editor mac version download

The most popular open source editor

DVWA

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

VSCode Windows 64-bit Download

VSCode Windows 64-bit Download

A free and powerful IDE editor launched by Microsoft

MantisBT

MantisBT

Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment