今日から特定日付までのカウントダウン

PHPでレポート集計する場合に、今日から特定日付までをカウントダウンするアルゴリズム。

<?php
$yyyyOrigin = 2007;
$mmOrigin = 5;
$ddOrigin = 1;
$yyyyToday = date("Y");
$mmToday = date("m");
$ddToday = date("d");

for ($i = 0; ; $i++) {
        $dateTarget = mktime(0,0,0,$mmToday,($ddToday - $i),$yyyyToday);
        $yyyyTarget = date("Y", $dateTarget);
        $mmTarget = date("m", $dateTarget);
        $ddTarget = date("d", $dateTarget);
        $dateTarget = sprintf("%04d/%02d/%02d", $yyyyTarget, $mmTarget, $ddTarget);
        $dateOrigin = sprintf("%04d/%02d/%02d", $yyyyOrigin, $mmOrigin, $ddOrigin);
        echo $dateTarget . "&lt;br&gt;";
        if ( $dateTarget == $dateOrigin ) {
                break;
        }
}
?>

<?php

$yyyyOrigin = 2007;

$mmOrigin = 5;

$ddOrigin = 1;

$yyyyToday = date("Y");

$mmToday = date("m");

$ddToday = date("d");

for ($i = 0; ; $i++) {

$dateTarget = mktime(0,0,0,$mmToday,($ddToday - $i),$yyyyToday);

$yyyyTarget = date("Y", $dateTarget);

$mmTarget = date("m", $dateTarget);

$ddTarget = date("d", $dateTarget);

$dateTarget = sprintf("%04d/%02d/%02d", $yyyyTarget, $mmTarget, $ddTarget);

$dateOrigin = sprintf("%04d/%02d/%02d", $yyyyOrigin, $mmOrigin, $ddOrigin);

echo $dateTarget . "<br>";

if ( $dateTarget == $dateOrigin ) {

break;

}

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今日から特定日付までのカウントダウン

Written by makoto

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