PHP Calculate Dates

With the PHP date function it is very easy to format dates however you like. If you are running PHP5 with E_STRICT error_reporting, be sure to set your timezone before using the PHP date function:

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PHP:

//PHP5 E_STRICT COMPLIANCE
date_default_timezone_set('America/Los_Angeles');

Here is the classic super simple example of how to format a date for a MySQL datetime field:

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PHP:

$date = date('Y-m-d H:i:s');

This is how I calculate dates/times in the future or past:

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PHP:

//NEXT MONTH :: MONTH, YEAR
$date = date('F, Y',mktime(date('H'), date('i'), date('s'), date('m')+1 , date('d'), date('Y')));
//YESTERDAY :: MONTH DAY, YEAR
$date = date('F m, Y',mktime(date('H'), date('i'), date('s'), date('m') , date('d')-1, date('Y')));