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218 lines
8.1 KiB
218 lines
8.1 KiB
<?php |
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namespace Twister; |
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use \DateTime; // http://php.net/manual/en/class.datetime.php |
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use \DateInterval; // http://php.net/manual/en/class.dateinterval.php |
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use \DateTimeZone; // http://php.net/manual/en/class.datetimezone.php |
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use \DatePeriod; // http://php.net/manual/en/class.dateperiod.php |
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use \Iterator; // http://php.net/manual/en/class.iteratoraggregate.php Interface to create an external Iterator. |
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class DateIterator implements Iterator |
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{ |
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private $start = null; |
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private $current = null; |
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private $interval = null; |
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public static $utc = null; |
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public static $p1d = null; |
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public function __construct($date, $interval_spec = null) |
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{ |
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$this->start = (is_string($date) ? new \DateTime($date, self::$utc) : $date); |
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$this->current = clone $this->start; |
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$this->interval = $interval_spec === null ? self::$p1d : (is_string($interval_spec) ? new \DateInterval($interval_spec) : $interval_spec); |
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} |
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/** |
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* Returns the $current value as MySQL Date format ('YYYY-MM-DD') |
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* |
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* @return string The $current property |
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*/ |
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public function __toString() |
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{ |
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return $this->current->format('Y-m-d'); |
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} |
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public function rewind() |
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{ |
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$this->current = clone $this->start; |
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} |
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public function current() |
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{ |
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return $this->current->format('Y-m-d'); |
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} |
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public function key() |
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{ |
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return (int) $this->start->diff($this->current)->format('%r%a'); |
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} |
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public function next() |
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{ |
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$this->current->add($this->interval); |
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return $this; |
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} |
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public function prev() |
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{ |
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$this->current->sub($this->interval); |
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return $this; |
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} |
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public function valid() |
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{ |
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return true; // basically allows the DateIterator to be infinite |
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} |
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// Sets the `current` value! |
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public function toDate($date) |
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{ |
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$this->current = (is_string($date) ? new \DateTime($date, self::$utc) : $date); |
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} |
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public function getInterval() |
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{ |
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return $this->interval; |
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} |
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public function setInterval($interval_spec = 'P1D') |
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{ |
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$this->interval = new \DateInterval($interval_spec); |
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return $this; |
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} |
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/** |
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* Wrapper around DateTime::modify() |
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* |
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* `Alter the timestamp of a DateTime object by incrementing or decrementing in a format accepted by strtotime().` |
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* |
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* @link http://php.net/manual/en/datetime.modify.php |
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* @link http://php.net/manual/en/function.strtotime.php |
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* |
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* $return $this |
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*/ |
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public function modify($modify = '+1 day') |
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{ |
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$this->current->modify($modify); |
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return $this; |
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} |
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/** |
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* Wrapper around \DateTime->add() |
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* |
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* @link http://php.net/manual/en/datetime.add.php |
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* @link http://php.net/manual/en/class.dateinterval.php |
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* @link http://php.net/manual/en/dateinterval.construct.php |
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* @link https://en.wikipedia.org/wiki/Iso8601#Durations |
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* |
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* Simple examples: |
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* Two days is P2D. |
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* Two seconds is PT2S. |
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* Six years and five minutes is P6YT5M. |
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* |
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* Formats are based on the » ISO 8601 duration specification. |
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* |
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* @param string $interval_spec The character encoding |
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* @return new Twister\Date isntance or false on failure |
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*/ |
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public function add($interval_spec = 'P1D') |
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{ |
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$this->str = (new \DateTime($this->str, new \DateTimeZone('UTC')))->add(new \DateInterval($interval_spec))->format('Y-m-d'); |
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return $this; |
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} |
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/** |
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* Wrapper around \DateTime->sub() |
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* |
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* @link http://php.net/manual/en/datetime.sub.php |
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* @link http://php.net/manual/en/class.dateinterval.php |
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* @link http://php.net/manual/en/dateinterval.construct.php |
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* @link https://en.wikipedia.org/wiki/Iso8601#Durations |
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* |
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* Simple examples: |
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* Two days is P2D. |
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* Two seconds is PT2S. |
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* Six years and five minutes is P6YT5M. |
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* |
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* Formats are based on the » ISO 8601 duration specification. |
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* |
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* @param string $interval_spec The character encoding |
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* @return new Twister\Date isntance or false on failure |
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*/ |
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public function sub($interval_spec = 'P1D') |
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{ |
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$this->str = (new \DateTime($this->str, new \DateTimeZone('UTC')))->add(new \DateInterval($interval_spec))->format('Y-m-d'); |
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return $this; |
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} |
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function __get($name) |
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{ |
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switch ($name) |
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{ |
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case 'year': return $this->current->format('Y'); |
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case 'month': return $this->current->format('m'); |
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case 'day': return $this->current->format('d'); |
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// http://php.net/manual/en/function.date.php |
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case 'd': return $this->current->format('d'); // Day of the month, 2 digits with leading zeros eg. 01 to 31 |
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case 'D': return $this->current->format('D'); // A textual representation of a day, three letters eg. Mon through Sun |
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case 'j': return $this->current->format('j'); // Day of the month without leading zeros eg. 1 to 31 |
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case 'l': return $this->current->format('l'); // A full textual representation of the day of the week eg. Sunday through Saturday |
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case 'N': return $this->current->format('N'); // ISO-8601 numeric representation of the day of the week (added in PHP 5.1.0 eg. 1 (for Monday) through 7 (for Sunday) |
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case 'S': return $this->current->format('S'); // English ordinal suffix for the day of the month, 2 characters eg. st, nd, rd or th. Works well with j |
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case 'w': return $this->current->format('w'); // Numeric representation of the day of the week eg. 0 (for Sunday) through 6 (for Saturday) |
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case 'z': return $this->current->format('z'); // The day of the year (starting from 0) eg. 0 through 365 |
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case 'W': return $this->current->format('W'); // ISO-8601 week number of year, weeks starting on Monday eg. Example: 42 (the 42nd week in the year) |
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case 'F': return $this->current->format('F'); // A full textual representation of a month, such as January or March eg. January through December |
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case 'm': return $this->current->format('m'); // Numeric representation of a month, with leading zeros eg. 01 through 12 |
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case 'M': return $this->current->format('M'); // A short textual representation of a month, three letters eg. Jan through Dec |
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case 'n': return $this->current->format('n'); // Numeric representation of a month, without leading zeros eg. 1 through 12 |
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case 't': return $this->current->format('t'); // Number of days in the given month eg. 28 through 31 |
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case 'L': return $this->current->format('L'); // Whether it's a leap year eg. 1 if it is a leap year, 0 otherwise. |
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case 'o': return $this->current->format('o'); // ISO-8601 week-numbering year. This has the same value as Y, except that if the ISO week number (W) belongs to the previous or next year, that year is used instead. (added in PHP 5.1.0) eg. Examples: 1999 or 2003 |
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case 'Y': return $this->current->format('Y'); // A full numeric representation of a year, 4 digits eg. Examples: 1999 or 2003 |
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case 'y': return $this->current->format('y'); // A two digit representation of a year eg. Examples: 99 or 03 |
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// `time` related formats are missing! |
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case 'U': return $this->current->format('U'); // Seconds since the Unix Epoch (January 1 1970 00:00:00 GMT) eg. See also time() |
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case 'quarter': return $this->current->format('m') / 4 + 1; |
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default: |
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if ( ! ctype_lower($name)) |
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$name = strtolower($name); |
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if (self::$hashAlgos === null) |
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self::$hashAlgos = array_flip(hash_algos()); // set the hash algorithms as keys for faster lookup with isset() instead of in_array()! |
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if (isset(self::$hashAlgos[$name])) // we converted the hash name to lowercase above so we can safely support this: $this->Sha256 |
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return hash($name, $this->str); |
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//--- Start of alias and mixed-case properties ---// |
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switch ($name) |
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{ |
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// possible mixed-case variants `normalized` to lowercase. eg. `Scheme` => `scheme` |
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case 'length': return \strlen($this->str); |
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} |
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} |
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} |
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function __set($name, $value) |
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{ |
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switch ($name) |
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{ |
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case 'year': return $this->encoding = mb_internal_encoding(); |
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case 'month': return strlen($this->_str); |
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case 'day': return strlen($this->_str); |
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} |
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} |
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} |
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DateIterator::$utc = new \DateTimeZone('UTC');
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