php自动获取上一个月的起始时间

Posted 2020-08-08 gentsir

1、借鉴评论的方法[20170309 edit]

function get_month_start_end($timestamp)
{
    !empty($timestamp) OR $timestamp = time();

    $last_month = date(\'Y-m-01\', $timestamp);
    $last[\'first\'] = strtotime($last_month);
    $last[\'end\'] = strtotime("$last_month +1 month -1 seconds");

    return $last;
}

2、old方法

$last_month = date(\'Y-m\', strtotime(\'last month\'));

$last[\'first\'] = $last_month . \'-01 00:00:00\';
$last[\'end\'] = date(‘Y-m-d H:i:s’, strtotime("$last_month +1 month -1 day +23 hours +59 minutes +59 seconds"));