PHP 这个周一到周日是几月几号？

<code>    header(<span>"content-type:text/html;charset=utf-8"</span>);
    date_default_timezone_set(<span>'PRC'</span>);
    <span><span>function</span><span>getWeek</span><span>(<span>$unixTime</span>=<span>''</span>)</span>{</span><span>$unixTime</span>=is_numeric(<span>$unixTime</span>)?<span>$unixTime</span>:time();
        <span>$weekarray</span>=<span>array</span>(<span>'日'</span>,<span>'一'</span>,<span>'二'</span>,<span>'三'</span>,<span>'四'</span>,<span>'五'</span>,<span>'六'</span>,<span>'七'</span>);
        <span>return</span><span>"星期"</span>.<span>$weekarray</span>[date(<span>'w'</span>,<span>$unixTime</span>)];
    }

    <span>$var</span>=getWeek();

    <span>switch</span>(<span>$var</span>){
        <span>case</span><span>'星期天'</span>:
            <span>$var</span>=time();
            <span>$var2</span>=<span>$var</span>-(<span>84600</span>*<span>6</span>);
            <span>echo</span><span>"这个星期一是"</span>.date(<span>"Y-m-d"</span>,<span>$var2</span>).<span>"号"</span>;
        <span>break</span>;
        <span>case</span><span>'星期一'</span>:
            <span>$var</span>=time();
            <span>$var2</span>=<span>$var</span>;
            <span>echo</span><span>"这个星期一是"</span>.date(<span>"Y-m-d"</span>,<span>$var2</span>).<span>"号"</span>;
        <span>break</span>;
        <span>case</span><span>'星期二'</span>:
            <span>$var</span>=time();
            <span>$var2</span>=<span>$var</span>-<span>84600</span>;
            <span>echo</span><span>"这个星期一是"</span>.date(<span>"Y-m-d"</span>,<span>$var2</span>).<span>"号"</span>;
        <span>break</span>;
        <span>case</span><span>'星期三'</span>:
            <span>$var</span>=time();
            <span>$var2</span>=<span>$var</span>-(<span>84600</span>*<span>2</span>);
            <span>echo</span><span>"这个星期一是"</span>.date(<span>"Y-m-d"</span>,<span>$var2</span>).<span>"号"</span>;
        <span>break</span>;
        <span>case</span><span>'星期四'</span>:
            <span>$var</span>=time();
            <span>$var2</span>=<span>$var</span>-(<span>84600</span>*<span>3</span>);
            <span>echo</span><span>"这个星期一是"</span>.date(<span>"Y-m-d"</span>,<span>$var2</span>).<span>"号"</span>;
        <span>break</span>;
        <span>case</span><span>'星期五'</span>:
            <span>$var</span>=time();
            <span>$var2</span>=<span>$var</span>-(<span>84600</span>*<span>4</span>);
            <span>echo</span><span>"这个星期一是"</span>.date(<span>"Y-m-d"</span>,<span>$var2</span>).<span>"号"</span>;
        <span>break</span>;
        <span>case</span><span>'星期六'</span>:
            <span>$var</span>=time();
            <span>$var2</span>=<span>$var</span>-(<span>84600</span>*<span>5</span>);
            <span>echo</span><span>"这个星期一是"</span>.date(<span>"Y-m-d"</span>,<span>$var2</span>).<span>"号"</span>;
        <span>break</span>;
    }</code>