PHP获取启始时间戳

//获取今日的起始时间戳
function getTodayTimestamp(){
    return[
        mktime(0,0,0,date('m'),date('d'),date('Y')),
        mktime(0,0,0,date('m'),date('d')+1,date('Y'))-1
    ];
}

//获取昨日的起始时间戳
function getYesterdayTimestamp(){
    return [
        mktime(0,0,0,date('m'),date('d')-1,date('Y')),
        mktime(0,0,0,date('m'),date('d'),date('Y'))-1
    ];
}

//获取本周的起始时间戳
function getWeekTimestamp(){
    return [
        mktime(0,0,0,date("m"),date("d")-date("w")+1,date("Y")),
        mktime(23,59,59,date("m"),date("d")-date("w")+7,date("Y"))
    ];
}

//获取上周的起始时间戳
function getLastweekTimestamp(){
    return [
        mktime(0,0,0,date('m'),date('d')-date('w')+1-7,date('Y')),
        mktime(23,59,59,date('m'),date('d')-date('w')+7-7,date('Y'))
    ];
}

//获取近七日的起始时间戳
function getNear7Timestamp(){
    $getTodayTimestamp = getTodayTimestamp();
    return [
        $getTodayTimestamp[0] - 518400,
        $getTodayTimestamp[1]
    ];
}

//获取本月的起始时间戳
function getThismonthTimestamp(){
    return [
        mktime(0,0,0,date('m'),1,date('Y')),
        mktime(23,59,59,date('m'),date('t'),date('Y'))
    ];
}