php 获取当天或某个日期是星期几

2016/01/28 58046

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效果：今天是：星期五今天是：礼拜五2010-12-12是：礼拜日

[PHP]代码

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<?php
function getWeekName($data,$format = '星期')
{
    $week   =  date( "D ",$data);
    switch($week)
    {
        case "Mon ":
            $current   =   $format."一";
            break;
        case "Tue ":
            $current   =   $format."二";
            break;
        case "Wed ":
            $current   =   $format."三";
            break;
        case "Thu ":
            $current   =   $format."四";
            break;
        case "Fri ":
            $current   =   $format."五";
            break;
        case "Sat ":
            $current   =   $format."六";
            break;
        case "Sun ":
            $current   =   $format."日";
            break;
    }
    return $current;
}
 
echo '今天是：'.getWeekName(time(),'星期');
echo '<br>';
echo '今天是：'.getWeekName(time(),'礼拜');
echo '<br>';
echo '2010-12-12是：'.getWeekName(strtotime('2010-12-12'),'礼拜');
?>