How to convert time() value to year, month and day in php

In PHP, you can use the date() function to convert, the syntax is "date("Y-m-d",time())". The time() function can return a timestamp of the current time, and the date() function can format the timestamp through the format character (the value of the first parameter) and convert it into a date in the specified format.

The operating environment of this tutorial: windows7 system, PHP version 8.1, DELL G3 computer

In php, the time() function is used Gets the current time in seconds since the Unix epoch (January 1 1970 00:00:00 GMT).

• Returns an integer containing the Unix timestamp of the current time.

So how to convert the timestamp of the current time obtained by the time() function into a date in the format of year, month and day?

In PHP, you can use date() for conversion.

date() can format the timestamp and convert it into a date in the specified format through the format character (first parameter).

If you want to convert the time() timestamp to year, month and day format, the first parameter of date() needs to be controlled by the following characters:

DescriptionReturn value example------The day of the month, a 2-digit number with leading zeros##j1 monthFJanuarym01##M to n to 年- --YFor example: or yFor example: or Common character combinations for year, month and day are: Y-m-d

Format word The string can recognize the following format parameter string

format Character
日
d		01 to31
Day of the month, no leading zero		To 31
---	---
Month, complete text format, such as January or March		to December
The month represented by numbers, with leading zeros		To 12
The three-letter month	Jan	Dec
numeric month, without leading zeros	1	12
---
4-digit complete year	1999	2003
2-digit year	99	03

, and the output format is: 2022-05 -20

Example:

<?php
header(&#39;content-type:text/html;charset=utf-8&#39;);   
$t=time();
echo "当前时间戳为：".$t . "<br>";
echo "时间戳转为年月日格式：".date("Y-m-d",$t);
?>

Year, month, and day characters can be freely combined as needed:

<?php
header(&#39;content-type:text/html;charset=utf-8&#39;);   
$t=time();
echo "当前时间戳为：".$t . "<br>";
echo "时间戳转为年月日格式：".date("Y-m-d",$t). "<br>";
echo "时间戳转为年月日格式：".date("Y-m-j",$t). "<br>";
echo "时间戳转为年月日格式：".date("Y-n-d",$t). "<br>";
echo "时间戳转为年月日格式：".date("Y F d",$t). "<br>";
echo "时间戳转为年月日格式：".date("Y M d",$t). "<br>";
?>

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