- substr: documentation ( source)
- str_replace: documentation ( source)
<?php
//echo date('d-M-y');
//echo date('d-m-y H:i:s A' , strtotime( '29-APR-13 09.28.12.505032 pm'));
$date = '29-APR-13 09.28.12.505032 PM';
$newDate = str_replace(substr($date, 20, 25), "", $date);
echo $newDate;