How to convert date and time into unix timestamp in php?

Question

echo $_POST['time']."<br/>";
echo $_POST['day']."<br/>";
echo $_POST['year']."<br/>";
echo $_POST['month']."<br/>";

I have value store like this now I want to create a timestamp from these value. How to do that in PHP? Thanks in advance

Answer 1

You can use mktime(). Depending on the format of $_POST['time'], you split it into hour/min/sec and then use

$timestamp = mktime($hour, $min, $sec, $month, $day, $year)

Answer 2

Use a DateTime object. The parsing is done for you and you can control for TimeZone differences so that daylight savings time doesn't cause issues.

$datetimestring="{$_POST['year']}-{$_POST['month']}-{$_POST['day']} {$_POST['time]}";
$dt= date_create($datetimestring);//optional 2nd argument is TimeZone, so DST won't bite you
echo $dt->format('U');

Answer 3

echo mktime(0,0,0,$_POST['month'],$_POST['day'],$_POST['year']);

I don't know in what format your time is, so, you probably need to explode() it and then put the values into the three first parameters of mktime() like:

$_POST['time'] = '8:56';
$time = explode(':',$_POST['time']);
echo mktime($time[0],$time[1],0,$_POST['month'],$_POST['day'],$_POST['year']);

Answer 4

Another option is strtotime:

$time = "{$_POST['time']} {$_POST['month']}/{$_POST['day']}/{$_POST['year']}";
$timestamp = strtotime($time);

If $_POST['time'] is already in hours and minutes (HH:MM format), then this saves you the step of exploding and parsing it. strtotime can parse a dizzying number of strings into valid times.