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<?php
/**
* Copyright 2012-2014 Horde LLC (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you
* did not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @category Horde
* @copyright 2012-2014 Horde LLC
* @license http://www.horde.org/licenses/lgpl21 LGPL 2.1
* @package Imap_Client
*/
/**
* A wrapper around PHP's native DateTime class that handles improperly
* formatted dates and adds a few features missing from the base object
* (string representation; doesn't fail on bad date input).
*
* @author Michael Slusarz <slusarz@horde.org>
* @category Horde
* @copyright 2012-2014 Horde LLC
* @license http://www.horde.org/licenses/lgpl21 LGPL 2.1
* @package Imap_Client
*/
class Horde_Imap_Client_DateTime extends DateTime
{
/**
*/
public function __construct($time = null, $tz = null)
{
/* See https://bugs.php.net/bug.php?id=67118 */
$bug_67118 = (PHP_MINOR_VERSION >= 6) ||
in_array(PHP_VERSION, array('5.4.29', '5.5.13'));
$tz = new DateTimeZone('UTC');
try {
if ($bug_67118) {
new DateTime($time, $tz);
}
parent::__construct($time, $tz);
return;
} catch (Exception $e) {}
/* Bug #5717 - Check for UT vs. UTC. */
if (substr(rtrim($time), -3) === ' UT') {
try {
if ($bug_67118) {
new DateTime($time . 'C', $tz);
}
parent::__construct($time . 'C', $tz);
return;
} catch (Exception $e) {}
}
/* Bug #9847 - Catch paranthesized timezone information at end of date
* string. */
$date = preg_replace("/\s*\([^\)]+\)\s*$/", '', $time, -1, $i);
if ($i) {
try {
if ($bug_67118) {
new DateTime($date, $tz);
}
parent::__construct($date, $tz);
return;
} catch (Exception $e) {}
}
parent::__construct('@-1', $tz);
}
/**
* String representation: UNIX timestamp.
*/
public function __toString()
{
return $this->error()
? '0'
: strval($this->getTimestamp());
}
/**
* Was this an unparseable date?
*
* @return boolean True if unparseable.
*/
public function error()
{
return ($this->getTimestamp() === -1);
}
}
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