- array_sum: documentation ( source)
- print_r: documentation ( source)
<?php
$format = 'd/m/Y';
//$data = DateTime::createFromFormat($format, time());
$data = new DateTime();
echo $data->format($format); echo "\n";
$data->sub(new DateInterval('P1M'));
echo $data->format($format);
$dataErr = DateTime::createFromFormat($format, '23/13/2013');
$last = $dataErr->getLastErrors();
echo "print_r lasterrors: "; print_r($last); echo "\n";
echo "\narray_sum: ";
print_r(array_sum($last)); echo "\n";
print_r($dataErr->format($format));