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<?php |
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/** |
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* File containing the {@see AppUtils\ConvertHelper_DurationConverter} class. |
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* |
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* @package Application Utils |
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* @subpackage ConvertHelper |
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* @see ConvertHelper_DurationConverter |
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*/ |
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declare(strict_types=1); |
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namespace AppUtils; |
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/** |
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* Converts a timespan to a human readable duration string, |
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* e.g. "2 months", "4 minutes". |
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* |
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* @package Application Utils |
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* @subpackage ConvertHelper |
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* @author Sebastian Mordziol <[email protected]> |
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* |
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* @link http://www.sajithmr.com/php-time-ago-calculation/ |
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*/ |
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class ConvertHelper_DurationConverter |
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{ |
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const ERROR_NO_DATE_FROM_SET = 43401; |
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/** |
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* @var int |
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*/ |
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protected $dateFrom; |
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/** |
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* @var int |
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*/ |
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protected $dateTo; |
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/** |
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* @var bool |
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*/ |
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protected $future = false; |
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/** |
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* @var string |
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*/ |
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protected $interval = ''; |
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/** |
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* @var int |
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*/ |
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protected $difference = 0; |
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/** |
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* @var int |
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*/ |
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protected $dateDiff = 0; |
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/** |
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* @var array |
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*/ |
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protected static $texts; |
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public function __construct() |
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{ |
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} |
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/** |
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* Sets the origin date to calculate from. |
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* |
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* NOTE: if this is further in the future than |
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* the to: date, it will be considered as a |
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* calculation for something to come, i.e. |
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* "In two days". |
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* |
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* @param \DateTime $date |
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* @return ConvertHelper_DurationConverter |
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*/ |
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public function setDateFrom(\DateTime $date) : ConvertHelper_DurationConverter |
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{ |
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$this->dateFrom = ConvertHelper::date2timestamp($date); |
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return $this; |
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} |
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/** |
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* Sets the date to calculate to. Defaults to |
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* the current time if not set. |
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* |
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* @param \DateTime $date |
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* @return ConvertHelper_DurationConverter |
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*/ |
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public function setDateTo(\DateTime $date) : ConvertHelper_DurationConverter |
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{ |
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$this->dateTo = ConvertHelper::date2timestamp($date); |
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return $this; |
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} |
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/** |
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* Converts the specified dates to a human readable string. |
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* |
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* @throws ConvertHelper_Exception |
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* @return string |
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* |
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* @see ConvertHelper_DurationConverter::ERROR_NO_DATE_FROM_SET |
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*/ |
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public function convert() : string |
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{ |
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$this->initTexts(); |
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$this->resolveCalculations(); |
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$epoch = 'past'; |
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$key = 'singular'; |
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if($this->dateDiff > 1) { |
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$key = 'plural'; |
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} |
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if($this->future) { |
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$epoch = 'future'; |
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} |
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$key .= '-'.$epoch; |
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$text = self::$texts[$this->interval][$key]; |
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return str_replace('$value', $this->dateDiff, $text); |
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} |
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protected function initTexts() |
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{ |
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if(isset(self::$texts)) { |
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return; |
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} |
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self::$texts = array( |
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'y' => array( |
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'singular-future' => t('In one year'), |
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'plural-future' => t('In %1s years', '$value'), |
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'singular-past' => t('One year ago'), |
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'plural-past' => t('%1s years ago', '$value') |
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), |
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'm' => array( |
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'singular-future' => t('In one month'), |
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'plural-future' => t('In %1s months', '$value'), |
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'singular-past' => t('One month ago'), |
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'plural-past' => t('%1s months ago', '$value') |
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), |
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'ww' => array( |
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'singular-future' => t('In one week'), |
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'plural-future' => t('In %1s weeks', '$value'), |
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'singular-past' => t('One week ago'), |
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'plural-past' => t('%1s weeks ago', '$value') |
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), |
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'd' => array( |
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'singular-future' => t('In one day'), |
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'plural-future' => t('In %1s days', '$value'), |
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'singular-past' => t('One day ago'), |
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'plural-past' => t('%1s days ago', '$value') |
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), |
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'h' => array( |
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'singular-future' => t('In one hour'), |
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'plural-future' => t('In %1s hours', '$value'), |
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'singular-past' => t('One hour ago'), |
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'plural-past' => t('%1s hours ago', '$value') |
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), |
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'n' => array( |
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'singular-future' => t('In one minute'), |
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'plural-future' => t('In %1s minutes', '$value'), |
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'singular-past' => t('One minute ago'), |
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'plural-past' => t('%1s minutes ago', '$value') |
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), |
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's' => array( |
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'singular-future' => t('In one second'), |
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'plural-future' => t('In %1s seconds', '$value'), |
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'singular-past' => t('One second ago'), |
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'plural-past' => t('%1s seconds ago', '$value') |
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) |
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); |
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} |
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protected function convert_minute() : int |
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{ |
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return (int)floor($this->difference / 60); |
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} |
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protected function convert_hour() : int |
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{ |
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return (int)floor($this->difference / 60 / 60); |
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} |
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protected function convert_week() : int |
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{ |
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return (int)floor($this->difference / 60 / 60 / 24 / 7); |
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} |
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protected function convert_day() : int |
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{ |
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return (int)floor($this->difference / 60 / 60 / 24); |
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} |
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protected function convert_year() : int |
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{ |
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return (int)floor($this->difference / 60 / 60 / 24 / 365); |
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} |
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protected function convert_month() : int |
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{ |
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$months_difference = (int)floor($this->difference / 60 / 60 / 24 / 29); |
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$hour = (int)date("H", $this->dateFrom); |
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$min = (int)date("i", $this->dateFrom); |
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$sec = (int)date("s", $this->dateFrom); |
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$month = (int)date("n", $this->dateFrom); |
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$day = (int)date("j", $this->dateTo); |
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$year = (int)date("Y", $this->dateFrom); |
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while(mktime($hour, $min, $sec, $month + ($months_difference), $day, $year) < $this->dateTo) |
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{ |
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$months_difference++; |
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} |
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$datediff = $months_difference; |
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// We need this in here because it is possible |
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// to have an 'm' interval and a months |
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// difference of 12 because we are using 29 days |
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// in a month |
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if ($datediff == 12) { |
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$datediff--; |
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} |
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return $datediff; |
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} |
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protected function resolveCalculations() : void |
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{ |
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if(!isset($this->dateFrom)) |
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{ |
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throw new ConvertHelper_Exception( |
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'No date from has been specified.', |
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null, |
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self::ERROR_NO_DATE_FROM_SET |
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); |
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} |
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// no date to set? Assume we want to use today. |
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if(!isset($this->dateTo)) |
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{ |
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$this->dateTo = time(); |
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} |
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$this->difference = $this->resolveDifference(); |
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$this->interval = $this->resolveInterval(); |
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$this->dateDiff = $this->resolveDateDiff(); |
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} |
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protected function resolveInterval() : string |
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{ |
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// If difference is less than 60 seconds, |
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// seconds is a good interval of choice |
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if ($this->difference < 60) |
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{ |
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return "s"; |
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} |
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// If difference is between 60 seconds and |
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// 60 minutes, minutes is a good interval |
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if ($this->difference >= 60 && $this->difference < 60 * 60) |
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{ |
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return "n"; |
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} |
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// If difference is between 1 hour and 24 hours |
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// hours is a good interval |
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if ($this->difference >= 60 * 60 && $this->difference < 60 * 60 * 24) |
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{ |
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return "h"; |
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} |
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// If difference is between 1 day and 7 days |
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// days is a good interval |
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if ($this->difference >= 60 * 60 * 24 && $this->difference < 60 * 60 * 24 * 7) |
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{ |
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return "d"; |
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} |
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// If difference is between 1 week and 30 days |
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// weeks is a good interval |
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if ($this->difference >= 60 * 60 * 24 * 7 && $this->difference < 60 * 60 * 24 * 30) |
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{ |
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return "ww"; |
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} |
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// If difference is between 30 days and 365 days |
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// months is a good interval, again, the same thing |
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// applies, if the 29th February happens to exist |
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// between your 2 dates, the function will return |
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// the 'incorrect' value for a day |
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if ($this->difference >= 60 * 60 * 24 * 30 && $this->difference < 60 * 60 * 24 * 365) |
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{ |
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return "m"; |
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} |
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// If difference is greater than or equal to 365 |
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// days, return year. This will be incorrect if |
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// for example, you call the function on the 28th April |
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// 2008 passing in 29th April 2007. It will return |
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// 1 year ago when in actual fact (yawn!) not quite |
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// a year has gone by |
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if ($this->difference >= 60 * 60 * 24 * 365) |
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{ |
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return "y"; |
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} |
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return ""; |
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} |
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protected function resolveDifference() : int |
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{ |
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// Calculate the difference in seconds betweeen |
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// the two timestamps |
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$difference = $this->dateTo - $this->dateFrom; |
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if($difference < 0) |
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{ |
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$difference = $difference * -1; |
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$this->future = true; |
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} |
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return $difference; |
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} |
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protected function resolveDateDiff() : int |
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{ |
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// Based on the interval, determine the |
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// number of units between the two dates |
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// From this point on, you would be hard |
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// pushed telling the difference between |
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// this function and DateDiff. If the $datediff |
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// returned is 1, be sure to return the singular |
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// of the unit, e.g. 'day' rather 'days' |
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switch ($this->interval) |
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{ |
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case "m": |
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return $this->convert_month(); |
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case "y": |
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return $this->convert_year(); |
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case "d": |
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return $this->convert_day(); |
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case "ww": |
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return $this->convert_week(); |
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case "h": |
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return $this->convert_hour(); |
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case "n": |
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return $this->convert_minute(); |
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} |
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// seconds |
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return $this->difference; |
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} |
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} |
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