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• 前端之家
• PHP
• PHP计算一年多少个星期和每周的开始和结束日期

<div class="codebody" id="code53559">
function get_week($year) {
$year_start = $year . "-01-01";
$year_end = $year . "-12-31";
$startday = strtotime($year_start);
if (intval(date('N',$startday)) != '1') {
$startday = strtotime("next monday",strtotime($year_start)); //获取年第一周的日期
}
$year_mondy = date("Y-m-d",$startday); //获取年第一周的日期

$endday = strtotime($year_end);
if (intval(date('W',$endday)) == '7') {
$endday = strtotime("last sunday",strtotime($year_end));
}

$num = intval(date('W',$endday));
for ($i = 1; $i <= $num; $i++) {
$j = $i -1;
$start_date = date("Y-m-d",strtotime("$year_mondy $j week "));

$end_day = date("Y-m-d",strtotime("$start_date +6 day"));

$week_array[$i] = array (
str_replace("-",
".",
$start_date
),str_replace("-",".",$end_day));
}
return $week_array;
}