Correct use of easter_days() function in PHP

    PHP There are many functions related to date. Some of them are special functions that are not commonly used, but they need to be used in some special cases, such as You need to specify the number of days between March 21st and Easter of the year. In this case, you need the easter_days() function. This article will take you to take a look.

First let’s take a look at the syntax of the easter_days() function

easter_days ( int $year = ? , int $method = CAL_EASTER_DEFAULT )

• $year: year in positive form, if no year is specified , the default is the current year.

• $method: When set to CAL_EASTER_ROMAN, the Gregorian calendar can be used to calculate the Easter date between 1582-1752

• Return value: Returns the number of days from March 21st to Easter based on the given parameter year.

Code example:

1. Parameterless form

<?php
echo easter_days();       
echo "<br>";

输出：14

2. Parameterized form

<?php
echo easter_days(2022);       
echo "<br>";
echo easter_days(2021);       
echo "<br>";
echo easter_days(1999);       
echo "<br>";
echo easter_days(1492);        
echo "<br>";
echo easter_days(1913);        
?>

输出：27
      14
      14
      32
       2

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