phpself

<?php

define('DT', '2017-02-01 17:25:43');

$self = file_get_contents(__FILE__);

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

echo "Current date: " . DT . ", updating to {$date}\n";

$self = preg_replace('/define\(\'DT\', \'.*?\'\)/', 'define(\'DT\', \'' . $date . '\')', $self);

#echo $self;

file_put_contents(__FILE__, $self);