Find out what days there are in between two time points, such as 2013.03.29―2013.04.01 between 20130330,20130331 for two days

Ask what days there are between two points, such as 2013.03.29―2013.04.01 between 20130330,20130331 for two days
PHP asks two points of time between the days, such as 2013.03.29―2013.04.01 between 20130330,20130331 two days.

The user selected two time points, I will be his selected data into a report guide.
Because some of the data in some days there is no value, so, according to the selected time to traverse, put some values inserted, no value is 0, so there is this demand, thank you for help!

------Solution--------------------
The correct answer on Baidu
$j = 0;
for ($i = strtotime (' 2010-01-01 '); $i < Strtotime (' 2010-03-15
'); $i + = 86400) {

$y =mktime (0,0,0,01,01,2010);
$t =date ("y-m-d", $y + $j *24*3600);
Print $t. '
';
$j + +;
}

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