Вот пошаговый процедурный php-скрипт:
<code>// Declare the string
$DateTime_String = "Apr 3, 2015 16:58:46.461897000";
// Convert the string into an array
$DateTime_Array = explode(' ', $DateTime_String);
// Create a new $Time_Array containing one element each for hours, minutes and seconds
$Time_Array = explode(':', $DateTime_Array[3]);
// Remove Hours:Minutes:Seconds element from $DateTime_Array
array_splice($DateTime_Array, 3, 1);
// Concatenate the two arrays
$DateTime_Array = array_merge($DateTime_Array, $Time_Array);
// Convert Simple Ordinal Array into Associative Array
$DateTime_Units = array('Month', 'Day', 'Year', 'Hour', 'Minute', 'Second');
$DateTime_Array = array_combine($DateTime_Units, $DateTime_Array);
// Lose the trailing comma on $DateTime_Array['Day']
$DateTime_Array['Day'] = str_replace(',', '', $DateTime_Array['Day']);
// Add a leading 0 to $DateTime_Array['Day'] (if necessary)
$DateTime_Array['Day'] = '0'.$DateTime_Array['Day'];
$DateTime_Array['Day'] = substr($DateTime_Array['Day'], -2, 2);
// Convert Month Shortname into two digit integer
$DateTime_Array['Month'] = date('m', strtotime($DateTime_Array['Month']));
// Build $New_DateTime_String
$New_DateTime_String;
$New_DateTime_String .= $DateTime_Array['Year'].'-';
$New_DateTime_String .= $DateTime_Array['Month'].'-';
$New_DateTime_String .= $DateTime_Array['Day'].' ';
$New_DateTime_String .= $DateTime_Array['Hour'].':';
$New_DateTime_String .= $DateTime_Array['Minute'].':';
$New_DateTime_String .= $DateTime_Array['Second'];
echo '<pre>';
echo '<p>'.$DateTime_String.'<p>';
print_r($DateTime_Array);
echo '<p>'.$New_DateTime_String.'<p>';
echo '
';