日付のイテレーション的なもの

gistfile1.aw

<?php
	//PHP5.3以前
	$begin = strtotime('2012-01-05');
	$end = strtotime('2012-02-15') + 1;
	while($begin < $end){
		echo date('Y-m-d', $begin) . "\n";
		$begin = strtotime("+1 day", $begin);
	}
	
	//PHP5.3以上
	$period = new DatePeriod(
		new DateTime('2011-01-05'),
		new DateInterval('P1D'),
		new DateTime('2011-02-15 +1 second')
	);
	foreach ($period as $day) {
		echo $day->format('Y-m-d') . "\n";
	}