How to use date in php to get the day

php date() function can obtain the year, month or day of the week by passing in different formatting characters: 1. When the character is "z", you can obtain the day of the year Day; 2. When the character is "d" or "j", the day of the month can be obtained; 3. When the character is "D", "N" or "w", the day of the week can be obtained.

The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

In PHP, date() The function can format a timestamp and obtain the day of the week, month, or year.

Syntax:

date("格式化字符"[,时间戳])

The second parameter can be omitted, then it is the current date and time.

There are three formatting characters for getting the day of the year:

• The day of the year

  • z: Range 0 to 365

• The day of the month

  • d: With leading 2 digits of zero, range 01 to 31

  • j: no leading zero, range 1 to 31

• Day of the week

  • D: text representation, 3 letters, range Mon to Sun

  • N: ISO-8601 format number Indicates the day of the week (newly added in PHP 5.1.0), ranging from 1 (indicating Monday) to 7 (indicating Sunday)

  • w: numerical representation, range 0 ( Indicates Sunday) to 6 (indicates Saturday)

Example 1:

<?php
header(&#39;content-type:text/html;charset=utf-8&#39;);   
echo "今天是一年的第 ".date("z"). " 天<br>";
?>

##Example 2:

<?php
header(&#39;content-type:text/html;charset=utf-8&#39;);   
echo "今天是5月的第 ".date("d"). " 天<br>";
echo "今天是5月的第 ".date("j"). " 天<br>";
?>

##Example 3:

<?php
header(&#39;content-type:text/html;charset=utf-8&#39;);   
echo "今天是一周的第 ".date("D"). " 天<br>";
echo "今天是一周的第 ".date("N"). " 天<br>";
echo "今天是一周的第 ".date("w"). " 天<br>";
?>

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