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<?php |
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namespace HexMakina\Tempus; |
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class Dato extends Base |
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{ |
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const FORMAT = 'Y-m-d'; |
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const FORMAT_YEAR = 'Y'; |
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const DAYS_IN_A_WEEK = 7; |
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const WEEKS_IN_A_MONTH = 4; |
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const MONTHES_IN_A_YEAR = 12; |
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public static function format($parm = null, $format = null) |
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{ |
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$format = $format ?? self::FORMAT; |
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return parent::format($parm, $format); |
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} |
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public static function today($format = null) |
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{ |
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$format = $format ?? self::FORMAT; |
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return parent::format(null, $format); |
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} |
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// find the total numbers of days in full years since the mythical 1/1/0001, then add the number of days before the current one in the year passed. Do this for each date, then return the absolute value of the difference |
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public static function days_diff($a, $b, $c = 'DateTime') |
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{ |
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if (!is_a($a, $c) || !is_a($b, $c)) { |
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throw new \InvalidArgumentException('ARGUMENT_MUST_HAVE_SAME_TYPE'); |
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} |
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return self::days($a) - self::days($b); |
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} |
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public static function days($x, $d = 0) |
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{ |
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$lfy = $x->format('Y') - 1; // last full year |
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foreach ([4, -100, 400] as $f) { // leap year factors |
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$d += ($lfy / $f); |
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} |
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return (int)(($lfy * 365.25) + $d + $x->format('z')); // days since 1.1.1001 from last year (+|-) leap days + days in current year |
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} |
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public static function days_diff_in_parts($amount_of_days) |
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{ |
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$date_diff = []; |
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$previous_part = 'd'; |
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foreach (['w' => self::DAYS_IN_A_WEEK, 'm' => self::WEEKS_IN_A_MONTH, 'y' => self::MONTHES_IN_A_YEAR] as $part => $limit) { |
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if ($amount_of_days >= $limit) { |
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$date_diff[$part] = intval($amount_of_days / $limit); |
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$date_diff[$previous_part] = $amount_of_days % $limit; |
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$previous_part = $part; |
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$amount_of_days = intval($amount_of_days / $limit); |
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} else { |
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$date_diff[$previous_part] = $amount_of_days; |
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break; |
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} |
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} |
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return $date_diff; |
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} |
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public static function first_date($year, $month, $format = null) |
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{ |
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$format = $format ?? self::FORMAT; |
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return date_format(new \DateTime("$year-$month-1"), $format); |
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} |
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public static function last_date($year, $month, $format = null) |
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{ |
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$format = $format ?? self::FORMAT; |
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return date_format(new \DateTime("$year-$month-" . self::last_day($year, $month)), $format); |
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} |
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public static function last_day($year, $month) |
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{ |
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return date_format(new \DateTime("$year-$month-1"), 't'); |
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} |
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} |
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HexMakina /
Tempus
