How to convert a date YYYY-MM-DD to epoch in PHP [duplicate]

Perhaps this answers your question

http://www.epochconverter.com/programming/functions-php.php

Here is the content of the link:

There are many options:

1. Using 'strtotime':

strtotime parses most English language date texts to epoch/Unix Time.

echo strtotime("15 November 2012");// ... or ...echo strtotime("2012/11/15");// ... or ...echo strtotime("+10 days"); // 10 days from now

It's important to check if the conversion was successful:

// PHP 5.1.0 or higher, earlier versions check: strtotime($string)) === -1if ((strtotime("this is no date")) === false) {   echo 'failed'; }

2. Using the DateTime class:

The PHP 5 DateTime class is nicer to use:

// object oriented$date = new DateTime('01/15/2010'); // format: MM/DD/YYYYecho $date->format('U'); // or procedural$date = date_create('01/15/2010'); echo date_format($date, 'U');

The date format 'U' converts the date to a UNIX timestamp.

3. Using 'mktime':

This version is more of a hassle but works on any PHP version.

// PHP 5.1+ date_default_timezone_set('UTC');  // optional mktime ( $hour, $minute, $second, $month, $day, $year );// before PHP 5.1mktime ( $hour, $minute, $second, $month, $day, $year, $is_dst );// $is_dst : 1 = daylight savings time (DST), 0 = no DST ,  -1 (default) = auto// example: generate epoch for Jan 1, 2000 (all PHP versions)echo mktime(0, 0, 0, 1, 1, 2000); 

Try this :

$date  = '2013-03-13';$dt   = new DateTime($date);echo $dt->getTimestamp();

Ref: http://www.php.net/manual/en/datetime.gettimestamp.php

use strtotime() it provides you Unix time stamp starting from 01-01-1970