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>shuffle</H1
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> (PHP 3 >= 3.0.8, PHP 4, PHP 5)</P
>shuffle -- 将数组打乱</DIV
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><H2
>说明</H2
>bool <B
CLASS="methodname"
>shuffle</B
> ( array &array )<BR
></BR
><P
> 本函数打乱（随机排列单元的顺序）一个数组。
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><B
>注意: </B
>本函数为
<CODE
CLASS="parameter"
>array</CODE
> 中的单元赋予新的键名。这将删除原有的键名而不仅是重新排序。</P
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>例 1. <B
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>shuffle()</B
> 例子</B
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><code><font color="#000000">
<font color="#0000BB"><?php<br />$numbers </font><font color="#007700">= </font><font color="#0000BB">range</font><font color="#007700">(</font><font color="#0000BB">1</font><font color="#007700">,</font><font color="#0000BB">20</font><font color="#007700">);<br /></font><font color="#0000BB">srand</font><font color="#007700">((float)</font><font color="#0000BB">microtime</font><font color="#007700">()*</font><font color="#0000BB">1000000</font><font color="#007700">);<br /></font><font color="#0000BB">shuffle</font><font color="#007700">(</font><font color="#0000BB">$numbers</font><font color="#007700">);<br />foreach (</font><font color="#0000BB">$numbers </font><font color="#007700">as </font><font color="#0000BB">$number</font><font color="#007700">) {<br /> echo </font><font color="#DD0000">"$number "</font><font color="#007700">;<br />}<br /></font><font color="#0000BB">?></font>
</font>
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><B
>注意: </B
>自 PHP 4.2.0 起，不再需要用
<A
HREF="function.srand.html"
><B
CLASS="function"
>srand()</B
></A
> 或 <A
HREF="function.mt-srand.html"
><B
CLASS="function"
>mt_srand()</B
></A
>
函数给随机数发生器播种，现已自动完成。</P
></BLOCKQUOTE
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><P
> 参见
<A
HREF="function.arsort.html"
><B
CLASS="function"
>arsort()</B
></A
>，<A
HREF="function.asort.html"
><B
CLASS="function"
>asort()</B
></A
>，<A
HREF="function.ksort.html"
><B
CLASS="function"
>ksort()</B
></A
>，<A
HREF="function.rsort.html"
><B
CLASS="function"
>rsort()</B
></A
>，<A
HREF="function.sort.html"
><B
CLASS="function"
>sort()</B
></A
>
和 <A
HREF="function.usort.html"
><B
CLASS="function"
>usort()</B
></A
>。
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