Get an array of dates with Y-m-d format in between 2 input dates - PHP

functions-date.php

<?php 
/*
|- Returns an array of dates with Y-m-d format in between 2 input dates
|- 
|- @params string $strDateFrom as date("Y-m-d") = "2014-01-01"
|- @params string $strDateTo as date("Y-m-d") = "2014-01-31"
|- @return array() of dates
|-
|- @author: Jewel Ahmed
|- @last modified: 18th Aug, 2015
*/
function getDateListsBetWeen2Dates($strDateFrom, $strDateTo)
{
    $listOfDays = array();
    $iDateFrom = mktime( 1, 0, 0, substr( $strDateFrom, 5, 2 ), substr( $strDateFrom, 8, 2 ), substr( $strDateFrom, 0, 4 ) );
    $iDateTo = mktime( 1, 0, 0, substr( $strDateTo, 5, 2 ), substr( $strDateTo, 8, 2 ), substr( $strDateTo, 0, 4 ) );
    if ( $iDateTo >= $iDateFrom )
    {
        $listOfDays[] = date( 'Y-m-d', $iDateFrom );
        while ( $iDateFrom < $iDateTo )
        {
            $iDateFrom+= 86400; // add 24 hours
            $listOfDays[] = date( 'Y-m-d', $iDateFrom ); 
        }
    }
    return $listOfDays;
}