php gets how many days in a year

php gets how many days in a year

php has no built-in function method for us to use, so we can write A function method to get the number of days in a year and distinguish between leap years and flat years. PHP has a built-in number of days in the month. We can get the number of days in a year by adding the number of days in the month.

The code is as follows:

<?php
function cal_days_in_year($year){
    $days = 0;
    for($month=1;$month<=12;$month++){
        $days = $days + cal_days_in_month(CAL_GREGORIAN,$month,$year);
     }
return $days;
}
 
//闰年
echo "这是闰年一年有：".cal_days_in_year(2000)."天";
echo "<br>;
//平年
echo "这是平年一年有：".cal_days_in_year(1999)."天";
echo "<br>;
//2019年
echo "今年2019年有：".cal_days_in_year(date(&#39;Y&#39;,time()))."天";
 
echo "<br>;

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