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<?php |
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/* |
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* Ntentan Framework |
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* Copyright (c) 2008-2015 James Ekow Abaka Ainooson |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining |
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* a copy of this software and associated documentation files (the |
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* "Software"), to deal in the Software without restriction, including |
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* without limitation the rights to use, copy, modify, merge, publish, |
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* distribute, sublicense, and/or sell copies of the Software, and to |
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* permit persons to whom the Software is furnished to do so, subject to |
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* the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be |
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* included in all copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE |
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION |
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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* |
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*/ |
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namespace ntentan\honam\engines\php\helpers; |
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use ntentan\honam\engines\php\Helper; |
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/** |
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* A view helper for formatting dates. |
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* |
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* @author James Ekow Abaka Ainooson |
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*/ |
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class DateHelper extends Helper |
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{ |
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/** |
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* The UNIX timestamp which represents the most recently parsed date. |
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* @var integer |
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*/ |
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private $timestamp; |
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/** |
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* Internal utility method for selecting a timestamp. This method returns |
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* the DatesHelper::timestamp variable if the date parameter is null. This |
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* method makes it possible for the helper methods to use either the |
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* internally stored timestamp (which is stored by the DatesHelper::parse |
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* method) or the date passed directly to the helper method. |
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* |
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* @param string $date |
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* @return integer |
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*/ |
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private function selectTimestamp($date = null) |
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{ |
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return $date === null ? $this->timestamp : strtotime($date); |
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} |
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/** |
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* Parse a time in string format and store. Once parsed, all calls to helper |
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* methods which do not specify their own dates use the last date which was |
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* parsed. |
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* |
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* @param string $time |
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* @return DateHelper |
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*/ |
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public function help($time) |
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{ |
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$this->timestamp = strtotime($time); |
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return $this; |
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} |
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/** |
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* A wrapper arround the PHP date() method. This method however takes the |
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* dates in various string formats. |
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* |
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* @param string $format |
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* @param string $date |
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* @return string |
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*/ |
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public function format($format = 'jS F, Y', $date = null) |
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{ |
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return date($format, $this->selectTimestamp($date)); |
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} |
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/** |
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* Returns date in the format 12:00 am |
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* |
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* @param string $date |
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* @return string |
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*/ |
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public function time($date = null) |
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{ |
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return date("g:i a", $this->selectTimestamp($date)); |
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} |
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/** |
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* Provides a nice sentence to represents the date in age terms eg. Three Years, |
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* Two days or now. The first argument is a boolean which qualifies the date |
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* with a relativity word (like ago) which gives the date a sense of passing |
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* time. For example the outputs with this argument could be |
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* (two days ago, one month ago, now, yesterday, three minutes ago ...) |
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* |
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* ````php |
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* <?php |
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* $helpers->date('2015-01-01')->sentence(true); |
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* ```` |
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* |
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* @param boolean $ago |
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* @param string $referenceDate |
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* @return string |
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*/ |
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public function sentence($ago = false, $referenceDate = null) |
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{ |
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$timestamp = $this->selectTimestamp(); |
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$now = $referenceDate === null ? time() : strtotime($referenceDate); |
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$elapsed = $now - $timestamp; |
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$future = $elapsed < 0; |
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$elapsed = abs($elapsed); |
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$englishDate = ''; |
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$timeFrames = array( |
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array( |
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'min' => 0, |
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'max' => 10, |
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'scale' => 'now', |
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'plurals' => false, |
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'divisor' => 1, |
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'has_future' => false, |
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'show_elapsed' => false |
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), |
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array( |
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'min' => 10, |
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'max' => 60, |
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'scale' => 'second', |
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'plurals' => true, |
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'divisor' => 1, |
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'has_future' => false, |
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'show_elapsed' => true |
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), |
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array( |
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'min' => 60, |
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'max' => 3600, |
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'scale' => 'minute', |
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'plurals' => true, |
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'divisor' => 60, |
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'has_future' => false, |
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'show_elapsed' => true |
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), |
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array( |
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'min' => 3600, |
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'max' => 86400, |
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'scale' => 'hour', |
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'plurals' => true, |
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'divisor' => 3600, |
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'has_future' => false, |
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'show_elapsed' => true |
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), |
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array( |
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'min' => 86400, |
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'max' => 172800, |
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'scale' => array('yesterday', 'tomorrow'), |
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'has_future' => true, |
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'plurals' => false, |
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'divisor' => 86400, |
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'show_elapsed' => false |
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), |
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array( |
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'min' => 172800, |
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'max' => 604800, |
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'scale' => 'day', |
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'plurals' => true, |
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'divisor' => 86400, |
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'has_future' => false, |
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'show_elapsed' => true |
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), |
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array( |
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'min' => 604800, |
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'max' => 2419200, |
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'scale' => 'week', |
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'plurals' => true, |
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'divisor' => 604800, |
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'has_future' => false, |
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'show_elapsed' => true |
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), |
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array( |
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'min' => 2419200, |
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'max' => 31536000, |
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'scale' => 'month', |
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'plurals' => true, |
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'divisor' => 2419200, |
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'has_future' => false, |
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'show_elapsed' => true |
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), |
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array( |
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'min' => 31536000, |
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'max' => 0, |
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'scale' => 'year', |
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'plurals' => true, |
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'divisor' => 31536000, |
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'has_future' => false, |
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'show_elapsed' => true |
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), |
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); |
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foreach($timeFrames as $timeFrame) |
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{ |
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if(($elapsed >= $timeFrame['min'] && $elapsed < $timeFrame['max']) || ($elapsed >= $timeFrame['min'] && $timeFrame['max'] === 0)) |
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{ |
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$value = floor($elapsed / $timeFrame['divisor']); |
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$englishDate = $this->getEnglishDate($timeFrame, $value, $future); |
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break; |
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} |
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} |
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if($englishDate != 'now' && $englishDate != 'yesterday' && $englishDate != 'today' && $ago) |
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{ |
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if($future) |
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{ |
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$englishDate = 'in '. $englishDate; |
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} |
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else |
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{ |
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$englishDate .= ' ago'; |
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} |
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} |
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return $englishDate; |
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} |
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private function getEnglishDate($timeFrame, $value, $future) |
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{ |
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return ($timeFrame['show_elapsed'] ? "$value " : '') . |
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($timeFrame['has_future'] ? ($future ? $timeFrame['scale'][1] : $timeFrame['scale'][0]) : "{$timeFrame['scale']}") . |
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($timeFrame['plurals'] && $value > 1 ? 's' : ''); |
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} |
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public function __toString() { |
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return $this->format(); |
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} |
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} |
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