8 * Copyright (c) 2009-2013 Nicholas J Humfrey. All rights reserved.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright notice,
15 * this list of conditions and the following disclaimer in the documentation
16 * and/or other materials provided with the distribution.
17 * 3. The name of the author 'Nicholas J Humfrey" may be used to endorse or
18 * promote products derived from this software without specific prior
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
22 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
25 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
34 * @copyright Copyright (c) 2009-2013 Nicholas J Humfrey
35 * @license http://www.opensource.org/licenses/bsd-license.php
39 * Class that represents an RDF Literal of datatype xsd:dateTime
42 * @link http://www.w3.org/TR/xmlschema-2/#date
43 * @copyright Copyright (c) 2009-2013 Nicholas J Humfrey
44 * @license http://www.opensource.org/licenses/bsd-license.php
46 class EasyRdf_Literal_DateTime extends EasyRdf_Literal_Date
48 /** Constructor for creating a new date and time literal
50 * If the value is a DateTime object, then it will be converted to the xsd:dateTime format.
51 * If no value is given or is is null, then the current time is used.
55 * @param mixed $value The value of the literal
56 * @param string $lang Should be null (literals with a datatype can't have a language)
57 * @param string $datatype Optional datatype (default 'xsd:dateTime')
58 * @return object EasyRdf_Literal_DateTime
60 public function __construct($value = null, $lang = null, $datatype = null)
62 // If $value is null, use 'now'
63 if (is_null($value)) {
64 $value = new DateTime('now');
67 // Convert DateTime objects into string
68 if ($value instanceof DateTime) {
69 $atom = $value->format(DateTime::ATOM);
70 $value = preg_replace('/[\+\-]00(\:?)00$/', 'Z', $atom);
73 EasyRdf_Literal::__construct($value, null, $datatype);
76 /** Parses a string using DateTime and creates a new literal
79 * $dt = EasyRdf_Literal_DateTime::parse('Mon 18 Jul 2011 18:45:43 BST');
82 * @param string $value The date and time to parse
83 * @return object EasyRdf_Literal_DateTime
85 public static function parse($value)
87 $value = new DateTime($value);
88 return new EasyRdf_Literal_DateTime($value);
91 /** 24-hour format of the hour as an integer
95 public function hour()
97 return (int)$this->format('H');
100 /** The minutes pasts the hour as an integer
104 public function min()
106 return (int)$this->format('i');
109 /** The seconds pasts the minute as an integer
113 public function sec()
115 return (int)$this->format('s');