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<a href="http://php.net/manual/en/function.date-add.php" rel="ugc">http://php.net/manual/en/function.date-add.php</a>
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http://php.net/manual/en/function.date-add.php [http://php.net/manual/en/function.date-add.php]

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date_sub — Subtracts an amount of days, months, years, hours, minutes and seconds from a DateTime object<br />
<br />
<br />
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<a href="http://php.net/manual/en/datetime.sub.php" rel="ugc">http://php.net/manual/en/datetime.sub.php</a>
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date_sub — Subtracts an amount of days, months, years, hours, minutes and seconds from a DateTime object



http://php.net/manual/en/datetime.sub.php [http://php.net/manual/en/datetime.sub.php]

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I have two different dates and different times, I would like to know how to do the calculation to get the difference in hours between these two dates example:<br />
<br />
$Date1 = &quot;2012-01-01&quot;;<br />
$Date2 = &quot;2012-01-02&quot;;<br />
<br />
$hora1 = &quot;20:00:00&quot;;<br />
$hora2 = &quot;21:00:00&quot;;<br />
<br />
How to calculate the difference between days and hours?
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I have two different dates and different times, I would like to know how to do the calculation to get the difference in hours between these two dates example:

$Date1 = "2012-01-01";
$Date2 = "2012-01-02";

$hora1 = "20:00:00";
$hora2 = "21:00:00";

How to calculate the difference between days and hours?

Difference in hours between dates

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