• 有效期增加3个月
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$pirorTime = time();
$t = strtotime("$this->expire_date");

if($t > $pirorTime)
{
    $pirorTime = $t;
}
$pirorDate = date("Y-m-d", $pirorTime);

$this->expire_date = date("Y-m-d", strtotime("$pirorDate +3 months"));
  • 获取本周日日期
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date('Y-m-d',strtotime('0 sunday', time()));