mcal_is_leap

(PHP 3 >= 3.0.13, PHP 4, PECL)

mcal_is_leap_year -- Returns if the given year is a leap year or not

Description

bool mcal_is_leap_year ( int year )

mcal_is_leap_year() returns 1 if the given year is a leap year, 0 if not.

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wixson at umr dot edu
04-Jun-2003 03:35


Leap Year Check



// pass a 4digit year

// works for me 1969-2037, will need fix out of that range



// The Gregorian Leap Year Rule

function Gr_IsLeapYr ($yr) {

$isleap=0;

if ($yr % 4 == 0) {

// Years evenly divisible by 4 are leap years.

    $isleap=1;

// Exception: Centurial years that are not evenly divisible by 400.

    if ( $yr % 100 == 0 && $yr % 400 != 0) {

        // not a leap year

        $isleap=0;        

    }            

}

return $isleap;    

} // end Gr_IsLeapYear

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