Could you point the way to convert a date from 'DD/MM/YYYY HH:mm:SS' to 'YYYY-DD-MM HH:mm:SS' ?

Hi Experts

Could you point the way to convert a date from 'DD/MM/YYYY HH:mm:SS'  to  'YYYY-DD-MM HH:mm:SS'  ?

Thanks in advance.
Eduardo FuerteAsked:
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Ray PaseurConnect With a Mentor Commented:
Yes, there is different meaning in the slash and the dash.  The slash assumes the American way of writing dates.  The dash is what you want with your date format.

Best regards, ~Ray
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Ray PaseurCommented:
Here's an example.
<?php // demo/temp_efuerte.php
/**
 * https://www.experts-exchange.com/questions/28977419/Could-you-point-the-way-to-convert-a-date-from-'DD-MM-YYYY-HH-mm-SS'-to-'YYYY-DD-MM-HH-mm-SS'.html
 *
 * https://www.experts-exchange.com/questions/28977154/Function-to-convert-string-date-into-a-sql-format-date-string.html
 * https://www.experts-exchange.com/articles/201/Handling-Date-and-Time-in-PHP-and-MySQL-Procedural-Version.html
 */
error_reporting(E_ALL);

function DateThing($s, $p='c')
{
    $ts = strtotime($s);
    if (!$ts)
    {
        trigger_error("Date $s is not valid", E_USER_WARNING);
        return 'INVALID';
    }
    return date($p, $ts);
}

// SHOW THAT THE ORIGINAL DOES NOT WORK
$old = '19/10/2016 09:36:00';
$pat = 'Y-m-d H:i:s';
$new = datething($old, $pat);
echo PHP_EOL . "$old => $new";

echo '<br>' . PHP_EOL;

// MODIFY THE ORIGINAL TO MAKE IT WORK
$old = str_replace('/', '-', $old);
$new = datething($old, $pat);
echo PHP_EOL . "$old => $new";

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Eduardo FuerteAuthor Commented:
Unfortunatelly I don't have too much time just now and the problem I have is:

case 'DD/MM/YYYY HH:mm:SS':
	switch ($to) {
		case 'YYYY-DD-MM HH:mm:SS':
			
			var_dump($value);
		
			$var1 = strtotime($value);
			var_dump($var1);
		   
			$aux = date('Y-m-d H:i:s', strtotime($value));
			var_dump($aux);
			die;			

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Produces:

img001
Could you point  a workaround?
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Eduardo FuerteAuthor Commented:
Ray

Sorry, our message crossed.

By using your example, just do:

$value = str_replace('/', '-', $value);

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It looks ok!
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Chris StanyonConnect With a Mentor Commented:
You can use the createFromTime method of the DateTime object. Basically, you tell the function what your format is and it will create a date based on that. You can then output the result using the format method to get your new format:

$date = "19/10/2016 14:48:21";
$origFormat = "d/m/Y H:i:s"; // DD/MM/YYYY HH:MM:SS
$newFormat = "Y-d-m H:i:s"; // YYYY-DD-MM HH:MM:SS

$newDate = DateTime::createFromFormat($origFormat, $date);
echo $date->format($newFormat);

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3
 
Eduardo FuerteAuthor Commented:
Thanks for help
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