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<?php |
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/** |
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* Created by rozbo at 2017/3/16 上午11:09 |
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*/ |
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namespace puck\helpers; |
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class TimeAgo |
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{ |
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// defines the number of seconds per "unit" |
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private $secondsPerMinute = 60; |
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private $secondsPerHour = 3600; |
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private $secondsPerDay = 86400; |
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private $secondsPerMonth = 2592000; |
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private $secondsPerYear = 31536000; // 31622400 seconds on leap years though... |
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private $timezone; |
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private $previousTimezone; |
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private static $timeAgoStrings = array( |
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'aboutOneDay' => "1 天前", |
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'aboutOneHour' => "大约 1 小时前", |
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'aboutOneMonth' => "大约 1 个月前", |
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'aboutOneYear' => "大约 1 年前", |
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'days' => "%s 天前", |
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'hours' => "%s 小时前", |
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'lessThanAMinute' => "1 分钟内", |
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'lessThanOneHour' => "%s 分钟前", |
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'months' => "%s 个月前", |
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'oneMinute' => "1 分钟前", |
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'years' => "超过 %s 年前" |
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); |
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/** |
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* TimeAgo constructor. |
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* @param null|DateTimeZone $timezone the timezone to use (uses system if none is given) |
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*/ |
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public function __construct($timezone = null) |
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{ |
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$this->timezone = $timezone; |
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// sets the default timezone |
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$this->changeTimezone(); |
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} |
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/** |
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* 析构函数用来恢复时区 |
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*/ |
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public function __destruct() { |
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$this->restoreTimezone(); |
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} |
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public function inStamp($past, $now = null) { |
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if($now==null){ |
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$now=time(); |
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} |
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// creates the "time ago" string. This always starts with an "about..." |
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$timeAgo = ""; |
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// finds the time difference |
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$timeDifference = $now - $past; |
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// rule 0 |
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// $past is null or empty or '' |
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if ($past==0) { |
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$timeAgo = $this->translate('never'); |
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} |
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// rule 1 |
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// less than 29secs |
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else if ($this->isLessThan29Seconds($timeDifference)) { |
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$timeAgo = $this->translate('lessThanAMinute'); |
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} |
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// rule 2 |
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// more than 29secs and less than 1min29secss |
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else if ($this->isLessThan1Min29Seconds($timeDifference)) { |
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$timeAgo = $this->translate('oneMinute'); |
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} |
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// rule 3 |
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// between 1min30secs and 44mins29secs |
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else if ($this->isLessThan44Min29Secs($timeDifference)) { |
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$minutes = round($timeDifference / $this->secondsPerMinute); |
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$timeAgo = $this->translate('lessThanOneHour', $minutes); |
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} |
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// rule 4 |
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// between 44mins30secs and 1hour29mins59secs |
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else if ($this->isLessThan1Hour29Mins59Seconds($timeDifference)) { |
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$timeAgo = $this->translate('aboutOneHour'); |
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} |
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// rule 5 |
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// between 1hour29mins59secs and 23hours59mins29secs |
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else if ($this->isLessThan23Hours59Mins29Seconds($timeDifference)) { |
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$hours = round($timeDifference / $this->secondsPerHour); |
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$timeAgo = $this->translate('hours', $hours); |
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} |
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// rule 6 |
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// between 23hours59mins30secs and 47hours59mins29secs |
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else if ($this->isLessThan47Hours59Mins29Seconds($timeDifference)) { |
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$timeAgo = $this->translate('aboutOneDay'); |
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} |
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// rule 7 |
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// between 47hours59mins30secs and 29days23hours59mins29secs |
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else if ($this->isLessThan29Days23Hours59Mins29Seconds($timeDifference)) { |
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$days = round($timeDifference / $this->secondsPerDay); |
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$timeAgo = $this->translate('days', $days); |
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} |
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// rule 8 |
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// between 29days23hours59mins30secs and 59days23hours59mins29secs |
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else if ($this->isLessThan59Days23Hours59Mins29Secs($timeDifference)) { |
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$timeAgo = $this->translate('aboutOneMonth'); |
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} |
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// rule 9 |
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// between 59days23hours59mins30secs and 1year (minus 1sec) |
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else if ($this->isLessThan1Year($timeDifference)) { |
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$months = round($timeDifference / $this->secondsPerMonth); |
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// if months is 1, then set it to 2, because we are "past" 1 month |
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if ($months == 1) { |
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$months = 2; |
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} |
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$timeAgo = $this->translate('months', $months); |
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} |
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// rule 10 |
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// between 1year and 2years (minus 1sec) |
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else if ($this->isLessThan2Years($timeDifference)) { |
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$timeAgo = $this->translate('aboutOneYear'); |
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} |
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// rule 11 |
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// 2years or more |
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else { |
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$years = floor($timeDifference / $this->secondsPerYear); |
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$timeAgo = $this->translate('years', $years); |
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} |
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return $timeAgo; |
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} |
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/** |
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* Fetches the different between $past and $now in a spoken format. |
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* NOTE: both past and now should be parseable by strtotime |
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* @param string $past the past date to use |
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* @param string $now the current time, defaults to now (can be an other time though) |
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* @return string the difference in spoken format, e.g. 1 day ago |
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*/ |
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public function inWords($past, $now = "now") |
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{ |
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// finds the past in datetime |
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$past = strtotime($past); |
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// finds the current datetime |
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$now = strtotime($now); |
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if ($this->isPastEmpty($past)) { |
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$past=0; |
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$past=0; |
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} |
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return $this->inStamp($past,$now); |
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} |
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/** |
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* Fetches the date difference between the two given dates. |
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* NOTE: both past and now should be parseable by strtotime |
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* |
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* @param string $past the "past" time to parse |
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* @param string $now the "now" time to parse |
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* @return array the difference in dates, using the two dates |
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*/ |
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public function dateDifference($past, $now = "now") |
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{ |
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// initializes the placeholders for the different "times" |
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$seconds = 0; |
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$minutes = 0; |
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$hours = 0; |
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$days = 0; |
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$months = 0; |
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$years = 0; |
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// finds the past in datetime |
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$past = strtotime($past); |
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// finds the current datetime |
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$now = strtotime($now); |
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// calculates the difference |
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$timeDifference = $now - $past; |
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// starts determining the time difference |
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if ($timeDifference >= 0) { |
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switch ($timeDifference) { |
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// finds the number of years |
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case ($timeDifference >= $this->secondsPerYear): |
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// uses floor to remove decimals |
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$years = floor($timeDifference / $this->secondsPerYear); |
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// saves the amount of seconds left |
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$timeDifference = $timeDifference - ($years * $this->secondsPerYear); |
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// finds the number of months |
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case ($timeDifference >= $this->secondsPerMonth && $timeDifference <= ($this->secondsPerYear - 1)): |
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// uses floor to remove decimals |
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$months = floor($timeDifference / $this->secondsPerMonth); |
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// saves the amount of seconds left |
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$timeDifference = $timeDifference - ($months * $this->secondsPerMonth); |
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// finds the number of days |
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case ($timeDifference >= $this->secondsPerDay && $timeDifference <= ($this->secondsPerYear - 1)): |
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// uses floor to remove decimals |
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$days = floor($timeDifference / $this->secondsPerDay); |
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// saves the amount of seconds left |
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$timeDifference = $timeDifference - ($days * $this->secondsPerDay); |
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// finds the number of hours |
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case ($timeDifference >= $this->secondsPerHour && $timeDifference <= ($this->secondsPerDay - 1)): |
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// uses floor to remove decimals |
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$hours = floor($timeDifference / $this->secondsPerHour); |
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// saves the amount of seconds left |
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$timeDifference = $timeDifference - ($hours * $this->secondsPerHour); |
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// finds the number of minutes |
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case ($timeDifference >= $this->secondsPerMinute && $timeDifference <= ($this->secondsPerHour - 1)): |
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// uses floor to remove decimals |
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$minutes = floor($timeDifference / $this->secondsPerMinute); |
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// saves the amount of seconds left |
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$timeDifference = $timeDifference - ($minutes * $this->secondsPerMinute); |
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// finds the number of seconds |
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case ($timeDifference <= ($this->secondsPerMinute - 1)): |
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// seconds is just what there is in the timeDifference variable |
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$seconds = $timeDifference; |
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} |
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} |
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$difference = [ |
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"years" => $years, |
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"months" => $months, |
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"days" => $days, |
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"hours" => $hours, |
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"minutes" => $minutes, |
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"seconds" => $seconds, |
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]; |
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return $difference; |
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} |
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/** |
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* Translates the given $label, and adds the given $time. |
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* @param string $label the label to translate |
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* @param string $time the time to add to the translated text. |
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* @return string the translated label text including the time. |
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*/ |
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protected function translate($label, $time = '') |
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{ |
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// handles a usecase introduced in #18, where a new translation was added. |
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// This would cause an array-out-of-bound exception, since the index does not |
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// exist in most translations. |
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if (!isset(self::$timeAgoStrings[$label])) { |
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return ''; |
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} |
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return sprintf(self::$timeAgoStrings[$label], $time); |
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} |
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/** |
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* Changes the timezone |
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*/ |
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protected function changeTimezone() |
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{ |
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$this->previousTimezone = false; |
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if ($this->timezone) { |
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$this->previousTimezone = date_default_timezone_get(); |
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date_default_timezone_set($this->timezone); |
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} |
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} |
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/** |
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* Restores a previous timezone |
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*/ |
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protected function restoreTimezone() |
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{ |
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if ($this->previousTimezone) { |
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date_default_timezone_set($this->previousTimezone); |
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$this->previousTimezone = false; |
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} |
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} |
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/** |
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* Checks if the given past is empty |
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* @param string $past the "past" to check |
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* @return bool true if empty, else false |
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*/ |
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private function isPastEmpty($past) |
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{ |
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return $past === '' || is_null($past) || empty($past); |
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} |
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/** |
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* Checks if the time difference is less than 29seconds |
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* @param int $timeDifference the time difference in seconds |
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* @return bool |
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*/ |
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private function isLessThan29Seconds($timeDifference) |
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{ |
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return $timeDifference <= 29; |
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} |
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/** |
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* Checks if the time difference is less than 1min 29seconds |
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* @param int $timeDifference the time difference in seconds |
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* @return bool |
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*/ |
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private function isLessThan1Min29Seconds($timeDifference) |
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{ |
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return $timeDifference >= 30 && $timeDifference <= 89; |
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} |
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/** |
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* Checks if the time difference is less than 44mins 29seconds |
|
313
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* @param int $timeDifference the time difference in seconds |
|
314
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* @return bool |
|
315
|
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*/ |
|
316
|
|
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private function isLessThan44Min29Secs($timeDifference) |
|
317
|
|
|
{ |
|
318
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|
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return $timeDifference >= 90 && |
|
319
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$timeDifference <= (($this->secondsPerMinute * 44) + 29); |
|
320
|
|
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} |
|
321
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|
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|
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322
|
|
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/** |
|
323
|
|
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* Checks if the time difference is less than 1hour 29mins 59seconds |
|
324
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* @param int $timeDifference the time difference in seconds |
|
325
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* @return bool |
|
326
|
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*/ |
|
327
|
|
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private function isLessThan1Hour29Mins59Seconds($timeDifference) |
|
328
|
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{ |
|
329
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return $timeDifference >= (($this->secondsPerMinute * 44) + 30) |
|
330
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&& |
|
331
|
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$timeDifference <= ($this->secondsPerHour + ($this->secondsPerMinute * 29) + 59); |
|
332
|
|
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} |
|
333
|
|
|
|
|
334
|
|
|
/** |
|
335
|
|
|
* Checks if the time difference is less than 23hours 59mins 29seconds |
|
336
|
|
|
* @param int $timeDifference the time difference in seconds |
|
337
|
|
|
* @return bool |
|
338
|
|
|
*/ |
|
339
|
|
|
private function isLessThan23Hours59Mins29Seconds($timeDifference) |
|
340
|
|
|
{ |
|
341
|
|
|
return $timeDifference >= ( |
|
342
|
|
|
$this->secondsPerHour + |
|
343
|
|
|
($this->secondsPerMinute * 30) |
|
344
|
|
|
) |
|
345
|
|
|
&& |
|
346
|
|
|
$timeDifference <= ( |
|
347
|
|
|
($this->secondsPerHour * 23) + |
|
348
|
|
|
($this->secondsPerMinute * 59) + |
|
349
|
|
|
29 |
|
350
|
|
|
); |
|
351
|
|
|
} |
|
352
|
|
|
|
|
353
|
|
|
/** |
|
354
|
|
|
* Checks if the time difference is less than 27hours 59mins 29seconds |
|
355
|
|
|
* @param int $timeDifference the time difference in seconds |
|
356
|
|
|
* @return bool |
|
357
|
|
|
*/ |
|
358
|
|
|
private function isLessThan47Hours59Mins29Seconds($timeDifference) |
|
359
|
|
|
{ |
|
360
|
|
|
return $timeDifference >= ( |
|
361
|
|
|
($this->secondsPerHour * 23) + |
|
362
|
|
|
($this->secondsPerMinute * 59) + |
|
363
|
|
|
30 |
|
364
|
|
|
) |
|
365
|
|
|
&& |
|
366
|
|
|
$timeDifference <= ( |
|
367
|
|
|
($this->secondsPerHour * 47) + |
|
368
|
|
|
($this->secondsPerMinute * 59) + |
|
369
|
|
|
29 |
|
370
|
|
|
); |
|
371
|
|
|
} |
|
372
|
|
|
|
|
373
|
|
|
/** |
|
374
|
|
|
* Checks if the time difference is less than 29days 23hours 59mins 29seconds |
|
375
|
|
|
* @param int $timeDifference the time difference in seconds |
|
376
|
|
|
* @return bool |
|
377
|
|
|
*/ |
|
378
|
|
|
private function isLessThan29Days23Hours59Mins29Seconds($timeDifference) |
|
379
|
|
|
{ |
|
380
|
|
|
return $timeDifference >= ( |
|
381
|
|
|
($this->secondsPerHour * 47) + |
|
382
|
|
|
($this->secondsPerMinute * 59) + |
|
383
|
|
|
30 |
|
384
|
|
|
) |
|
385
|
|
|
&& |
|
386
|
|
|
$timeDifference <= ( |
|
387
|
|
|
($this->secondsPerDay * 29) + |
|
388
|
|
|
($this->secondsPerHour * 23) + |
|
389
|
|
|
($this->secondsPerMinute * 59) + |
|
390
|
|
|
29 |
|
391
|
|
|
); |
|
392
|
|
|
} |
|
393
|
|
|
|
|
394
|
|
|
/** |
|
395
|
|
|
* Checks if the time difference is less than 59days 23hours 59mins 29seconds |
|
396
|
|
|
* @param int $timeDifference the time difference in seconds |
|
397
|
|
|
* @return bool |
|
398
|
|
|
*/ |
|
399
|
|
|
private function isLessThan59Days23Hours59Mins29Secs($timeDifference) |
|
400
|
|
|
{ |
|
401
|
|
|
return $timeDifference >= ( |
|
402
|
|
|
($this->secondsPerDay * 29) + |
|
403
|
|
|
($this->secondsPerHour * 23) + |
|
404
|
|
|
($this->secondsPerMinute * 59) + |
|
405
|
|
|
30 |
|
406
|
|
|
) |
|
407
|
|
|
&& |
|
408
|
|
|
$timeDifference <= ( |
|
409
|
|
|
($this->secondsPerDay * 59) + |
|
410
|
|
|
($this->secondsPerHour * 23) + |
|
411
|
|
|
($this->secondsPerMinute * 59) + |
|
412
|
|
|
29 |
|
413
|
|
|
); |
|
414
|
|
|
} |
|
415
|
|
|
|
|
416
|
|
|
/** |
|
417
|
|
|
* Checks if the time difference is less than 1 year |
|
418
|
|
|
* @param int $timeDifference the time difference in seconds |
|
419
|
|
|
* @return bool |
|
420
|
|
|
*/ |
|
421
|
|
|
private function isLessThan1Year($timeDifference) |
|
422
|
|
|
{ |
|
423
|
|
|
return $timeDifference >= ( |
|
424
|
|
|
($this->secondsPerDay * 59) + |
|
425
|
|
|
($this->secondsPerHour * 23) + |
|
426
|
|
|
($this->secondsPerMinute * 59) + |
|
427
|
|
|
30 |
|
428
|
|
|
) |
|
429
|
|
|
&& |
|
430
|
|
|
$timeDifference < $this->secondsPerYear; |
|
431
|
|
|
} |
|
432
|
|
|
|
|
433
|
|
|
/** |
|
434
|
|
|
* Checks if the time difference is less than 2 years |
|
435
|
|
|
* @param int $timeDifference the time difference in seconds |
|
436
|
|
|
* @return bool |
|
437
|
|
|
*/ |
|
438
|
|
|
private function isLessThan2Years($timeDifference) |
|
439
|
|
|
{ |
|
440
|
|
|
return $timeDifference >= $this->secondsPerYear |
|
441
|
|
|
&& |
|
442
|
|
|
$timeDifference < ($this->secondsPerYear * 2); |
|
443
|
|
|
} |
|
444
|
|
|
} |
This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVarassignment in line 1 and the$higherassignment in line 2 are dead. The first because$myVaris never used and the second because$higheris always overwritten for every possible time line.