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mcal_date_compare — Compares two dates


int mcal_date_compare(ayear, amonth, aday, byear, bmonth, bday);
int ayear: The year of the first date
int amonth: The month of the first date
int aday: The day of the first date
int byear: The year of the second date
int bmonth: The month of the second date
int bday: The day of the second date


Returns 1 if the first date is after the the second date, 0 if the two dates are the same, and -1 if the first date is before the second date.


mcal_date_compare() lets you determine the chronological order of two dates. Note that this function only compares dates; if you need to know the order of events on the same day, you will have to write your own logic to handle times as well.


PHP 3 since 3.0.13, PHP 4 since 4.0b4


Example 698. Comparing two dates

$ayear = 2000;
$amonth = MCAL_JULY;
$aday = 30;
$byear = 2000;
$bmonth = MCAL_JUNE;
$bday = 30;

$result = mcal_date_compare($ayear, $amonth, $aday, $byear, $bmonth, $bday);
if ($result < 0) {
    echo "Date 1 is before Date 2";
} elseif ($result == 0) {
    echo "Date 1 and Date 2 are the same";
} else {
    echo "Date 1 is after Date 2";

PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing (Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch). This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at The authors of this book have elected not to choose any options under the OPL. This online book was obtained from and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4 for the most part. The information is provided on an as-is basis, and no warranty or fitness is implied. All persons and entities shall have neither liability nor responsibility to any person or entity with respect to any loss or damage arising from the information contained in this book.

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