PHP获取本周、本月、本年所有的日期或月份

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//本月所有日期
开始和结束
function get_day($time = '', $format='Y-m-d'){
$time = $time != '' ? $time : time();
//获取当前周几
$week = date('d', $time);
$date = [];
for ($i=1; $i<=date('t'); $i++){
$date[$i]['start_time'] = date($format ,strtotime( '+' . $i-$week .' days', $time));
$date[$i]['end_time'] = date($format ,strtotime( '+' . $i-$week+1 .' days', $time));
}
return $date;
}
//本月所有日期
function get_day_num($time = '', $format='Y-m-d'){
$time = $time != '' ? $time : time();
//获取当前周几
$week = date('d', $time);
$date = [];
for ($i=1; $i<=date('t'); $i++){
$date[$i-1] = date($format ,strtotime( '+' . $i-$week .' days', $time));
}
return $date;
}
//本周所有日期
开始和结束
function get_week($time = '', $format='Y-m-d'){
$time = $time != '' ? $time : time();
//获取当前周几
$week = date('w', $time);
$date = [];
for ($i=1; $i<=7; $i++){
$date[$i]['start_time'] = date($format ,strtotime( '+' . $i-$week .' days', $time));
$date[$i]['end_time'] = date($format ,strtotime( '+' . $i-$week+1 .' days', $time));
}
return $date;
}
//本周所有日期
function get_week_num($time = '', $format='Y-m-d'){
$time = $time != '' ? $time : time();
//获取当前周几
$week = date('w', $time);
$date = [];
for ($i=1; $i<=7; $i++){
$date[$i-1] = date($format ,strtotime( '+' . $i-$week .' days', $time));
}
return $date;
}
//本年所有月份
开始和结束
function get_month(){
$year = date('Y');
$yeararr = [];
$month = [];
for ($i=1; $i <=12 ; $i++) {
$yeararr[$i] = $year.'-'.$i;
}
foreach ($yeararr as $key => $value) {
$timestamp = strtotime( $value );
$start_time = date( 'Y-m-1 00:00:00', $timestamp );
$mdays = date( 't', $timestamp );
$end_time = date( 'Y-m-' . $mdays . ' 23:59:59', $timestamp );
$month[$key]['start_time'] = $start_time;
$month[$key]['end_time'] = $end_time;
}
return $month;
}