php 时间戳 总结 今日，昨日，上周，本周，最近三个月，上季，本季，去年，最近七天，今年，最近三十天

if($time=="今日"){
$beginToday=mktime(0,0,0,date('m'),date('d'),date('Y'));
$endToday=mktime(0,0,0,date('m'),date('d')+1,date('Y'))-1;
$begin = Date("Y-m-d",$beginToday);
$end = Date("Y-m-d",$endToday);
}else if($time=="昨日"){
$beginYesterday=mktime(0,0,0,date('m'),date('d')-1,date('Y'));
$endYesterday=mktime(0,0,0,date('m'),date('d'),date('Y'))-1;
$begin = Date("Y-m-d",$beginYesterday);
$end = Date("Y-m-d",$endYesterday);
}else if($time=="上周"){
$beginLastweek=mktime(0,0,0,date('m'),date('d')-date('w')+1-7,date('Y'));
$endLastweek=mktime(23,59,59,date('m'),date('d')-date('w')+7-7,date('Y'));
$begin = Date("Y-m-d",$beginLastweek);
$end = Date("Y-m-d",$endLastweek);
}else if($time=="本周"){
//判断当天是星期几，0表星期天，1表星期一，6表星期六
$w_day=date("w",time());
//php处理当前星期时间点上，根据当天是否为星期一区别对待
if($w_day=='1'){
$cflag = '+0';
$lflag = '-1';
}else {
$cflag = '-1';
$lflag = '-2';
}
//本周一零点的时间戳
$frist = strtotime(date('Y-m-d',strtotime("$cflag week Monday", time())));
$begin = Date("Y-m-d",$frist);
$end = Date("Y-m-d",time());
}else if($time=="本月"){
$beginThismonth=mktime(0,0,0,date('m'),1,date('Y'));
$endThismonth=mktime(23,59,59,date('m'),date('t'),date('Y'));
$begin = Date("Y-m-d",$beginThismonth);
$end = Date("Y-m-d",$endThismonth);
}else if($time=="上月"){
$beginLastmonth=mktime(0,0,0,date('m')-1,1,date('Y'));
$endLastmonth=mktime(23,59,59,date('m')-1,date('t'),date('Y'));
$begin = Date("Y-m-d",$beginLastmonth);
$end = Date("Y-m-d",$endLastmonth);
}else if($time=="最近三个月"){
$beginThreemonth=mktime(23,59,59,date('m'),date('t'),date('Y'));
$endThreemonth=mktime(23,59,59,date('m')-3,date('t'),date('Y'));
$begin = Date("Y-m-d",$beginThreemonth);
$end = Date("Y-m-d",$endThreemonth);
}else if($time=="本季"){
$begin = date('Y-m-d', mktime(0, 0, 0,$season*3-3+1,1,date('Y')));
$end = date('Y-m-d', mktime(23,59,59,$season*3,date('t',mktime(0, 0 , 0,$season*3,1,date("Y"))),date('Y')));
}else if($time=="上季"){
$season = ceil((date('n'))/3);//当月是第几季度
$begin = date('Y-m-d', mktime(0, 0, 0,$season*3-3-3+1,1,date('Y')));
$end = date('Y-m-d', mktime(23,59,59,$season*3-3,date('t',mktime(0,0,0,$season*3,1,date("Y"))),date('Y')));
}else if($time=="今年"){
$begin = date('Y',time()). '-' ."01-01";
$end = date('Y',time()). '-' ."12-31";
}else if($time=="去年"){
$d=strtotime('-1 years');
$begin = date('Y',$d)."-01-01";
$end = date('Y',$d)."-12-31";
}else if($time=="最近七天"){
$begin = date('Y-m-d', strtotime('-7 days'));
$end = date('Y-m-d',time());
}else if($time=="最近三十天"){
$begin = date('Y-m-d', strtotime('-30 days'));
$end = date('Y-m-d',time());
}