104 lines
1.7 KiB
PHP
104 lines
1.7 KiB
PHP
<?php
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/**
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* Created by PhpStorm.
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* User: dell
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* Date: 2019/1/14 0014
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* Time: 13:50
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*/
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namespace Snowflake\Core;
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/**
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* Class DateFormat
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* @package Snowflake\Snowflake\Core
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*/
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class DateFormat
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{
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/**
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* @param $time
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* @return bool|false|int|string
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*/
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private static function check($time)
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{
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if ($time === null) {
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$time = time();
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} else if (is_numeric($time)) {
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$length = strlen(floatval($time));
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if ($length != 10 && $length != 13) {
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return false;
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}
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} else if (is_string($time)) {
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$time = strtotime($time);
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}
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if (date('Y-m-d', $time)) {
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return $time;
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}
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return false;
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}
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/**
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* @param null $time
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* @return bool|false|int
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*
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* 获取指定日期当周第一天的时间
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*/
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public static function getWeekCurrentDay($time = null)
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{
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if (!($time = static::check($time))) {
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return false;
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}
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$time = strtotime('-' . (date('N') - 1) . 'days', $time);
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return strtotime(date('Y-m-d'), $time);
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}
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/**
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* @param null $time
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* @return bool|false|int
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*
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* 获取指定日期当月第一天的时间
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*/
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public static function getMonthCurrentDay($time = null)
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{
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if (!($time = static::check($time))) {
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return false;
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}
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return strtotime(date('Y-m', $time) . '-01');
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}
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/**
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* @param $time
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* @return bool|false|int|string
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* 指定的月份有几天
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*/
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public static function getMonthTotalDay($time)
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{
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if (!($time = static::check($time))) {
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return false;
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}
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$time = date('t', $time);
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return $time;
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}
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/**
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* @param $startTime
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* @param null $endTime
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* @return string
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*/
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public static function mtime($startTime, $endTime = null)
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{
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if ($endTime === null) {
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$endTime = microtime(true);
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}
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return sprintf('%.7f', $endTime - $startTime);
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}
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}
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