$weekarray=array("日","一","二","三","四","五","六"); //先定义一个数组

今天是 <?=date("m-d")?> 星期<?=$weekarray[date("w",time())]?>


function get_week($a){
    $weekarray=array("日","一","二","三","四","五","六");
    return "星期".$weekarray[date("w",strtotime($a))];
}