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PHP获取一年中每个星期的开始和结束日期的方法,php获取
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PHP获取一年中每个星期的开始和结束日期的方法,php获取

Jun 13, 2016 am 09:14 AM
php method date Obtain

PHP获取一年中每个星期的开始和结束日期的方法,php获取

本文实例讲述了PHP获取一年中每个星期的开始和结束日期的方法。分享给大家供大家参考。具体分析如下:

最近项目中需要做个提交周报的功能,需要知道指定周数的开始日期和结束日期,以便处理其他业务。以下是一段通过PHP来获取一年中的每星期的开始日期和结束日期的代码,与大家分享。
以下是一段通过PHP来获取一年中的每星期的开始日期和结束日期的代码。

function get_week($year) { 
$year_start = $year . "-01-01"; 
$year_end = $year . "-12-31"; 
$startday = strtotime($year_start); 
if (intval(date('N', $startday)) != '1') { 
$startday=strtotime("nextmonday",strtotime($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') { 
$endday=strtotime("lastsunday",strtotime($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 $week_array; 
}
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函数get_week()通过传入参数$year年份,获取当年第一天和最后一天所在的周数,计算第一周的日期,通过循环获取每一周的第一天和最后一天的日期。最后返回是一个数组。
想得到指定周数的开始日期和结束日期,比如2011年第18周的开始日期和结束日期,代码如下:

$weeks = get_week(2011); 
echo '第18周开始日期:'.$weeks[18][0].''; 
echo '第18周结束日期:'.$weeks[18][1];
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最后输出结果:

1. 第18周开始日期:2011.05.02 
2. 第18周结束日期:2011.05.08
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希望本文所述对大家的php程序设计有所帮助。

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