PHP function `normalizeDateKeys` wich convert a php array with date keys in a pĥp array with date keys wich are following itself day by day

normalizeDateKeys.php

<?php
	/**
	 * Convert a php array with date in a pĥp array with date wich are following itself day by day
	 *
	 * @param array $date containing the date
	 * @param bool $dateInKey must be set to true if the dates are in the array's keys
	 * @param string $fDate relative to the date format relative to php date's function
	 * @return array with every one key for every day
	 */
	function normalizeDateArray(array $dates, $dateInKey = false, $fDate = 'Y-m-d') {
		$sort = $dateInKey === true ? 'ksort' : 'sort';
		$sort($dates);
		foreach($dates as $k => $v) {
			$date = date('Ymd', strtotime($dateInKey === true ? $k : $v));
			if(!isset($prev_date)) {
				$prev_date = strtotime($date);
				continue;
			}

			while($date > date('Ymd', strtotime('+1 day',  $prev_date))) {
				$prev_date = strtotime('+1 day', $prev_date);
				if($dateInKey===true) {
					$dates[date($fDate, $prev_date)] = 0;
				} else {
					$dates[] = date($fDate, $prev_date);
				}
			}
			$prev_date = strtotime($date);
		}
		$sort($dates);
		return $dates;
	}

var_dump(normalizeDateArray(array('2014-09-01' => 13, '2014-08-02' =>12), true));

/**
 * Will return :
array(31) {
  ["2014-08-02"]=>
  int(12)
  ["2014-08-03"]=>
  int(0)
  ["2014-08-04"]=>
  int(0)
  ["2014-08-05"]=>
  int(0)
  ["2014-08-06"]=>
  int(0)
  ["2014-08-07"]=>
  int(0)
  ["2014-08-08"]=>
  int(0)
  ["2014-08-09"]=>
  int(0)
  ["2014-08-10"]=>
  int(0)
  ["2014-08-11"]=>
  int(0)
  ["2014-08-12"]=>
  int(0)
  ["2014-08-13"]=>
  int(0)
  ["2014-08-14"]=>
  int(0)
  ["2014-08-15"]=>
  int(0)
  ["2014-08-16"]=>
  int(0)
  ["2014-08-17"]=>
  int(0)
  ["2014-08-18"]=>
  int(0)
  ["2014-08-19"]=>
  int(0)
  ["2014-08-20"]=>
  int(0)
  ["2014-08-21"]=>
  int(0)
  ["2014-08-22"]=>
  int(0)
  ["2014-08-23"]=>
  int(0)
  ["2014-08-24"]=>
  int(0)
  ["2014-08-25"]=>
  int(0)
  ["2014-08-26"]=>
  int(0)
  ["2014-08-27"]=>
  int(0)
  ["2014-08-28"]=>
  int(0)
  ["2014-08-29"]=>
  int(0)
  ["2014-08-30"]=>
  int(0)
  ["2014-08-31"]=>
  int(0)
  ["2014-09-01"]=>
  int(0)
}
*/