I have a form within which a date is input in UK format, and I need to convert it to 

yyyy-mm-dd

e.g. a date entered is: 31/03/2013 which I want to convert to '2013-03-31' for database insert.

I'm using the following which bizarrely works only sometimes:

$dateInput = $mysqli->real_escape_string($_POST['date']);
$show_date = date('Y-m-d', strtotime($dateInput));

Is there a better way to do this?

php date
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