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>gmp_pow</H1
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>    (PHP 4 &#62;= 4.0.4, PHP 5)</P
>gmp_pow&nbsp;--&nbsp;Raise number into power</DIV
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>Description</H2
>resource <B
CLASS="methodname"
>gmp_pow</B
> ( resource base, int exp )<BR
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>&#13;     Raise <CODE
CLASS="parameter"
>base</CODE
> into power
     <CODE
CLASS="parameter"
>exp</CODE
>. The case of 0^0 yields
     1. <CODE
CLASS="parameter"
>exp</CODE
> cannot be negative.
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>例 1. <B
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>gmp_pow()</B
> example</B
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><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$pow1 </font><font color="#007700">= </font><font color="#0000BB">gmp_pow</font><font color="#007700">(</font><font color="#DD0000">"2"</font><font color="#007700">, </font><font color="#0000BB">31</font><font color="#007700">);<br />echo </font><font color="#0000BB">gmp_strval</font><font color="#007700">(</font><font color="#0000BB">$pow1</font><font color="#007700">) . </font><font color="#DD0000">"\n"</font><font color="#007700">;<br /></font><font color="#0000BB">$pow2 </font><font color="#007700">= </font><font color="#0000BB">gmp_pow</font><font color="#007700">(</font><font color="#DD0000">"0"</font><font color="#007700">, </font><font color="#0000BB">0</font><font color="#007700">);<br />echo </font><font color="#0000BB">gmp_strval</font><font color="#007700">(</font><font color="#0000BB">$pow2</font><font color="#007700">) . </font><font color="#DD0000">"\n"</font><font color="#007700">;<br /></font><font color="#0000BB">$pow3 </font><font color="#007700">= </font><font color="#0000BB">gmp_pow</font><font color="#007700">(</font><font color="#DD0000">"2"</font><font color="#007700">, -</font><font color="#0000BB">1</font><font color="#007700">); </font><font color="#FF8000">// Negative exp, generates warning<br /></font><font color="#007700">echo </font><font color="#0000BB">gmp_strval</font><font color="#007700">(</font><font color="#0000BB">$pow3</font><font color="#007700">) . </font><font color="#DD0000">"\n"</font><font color="#007700">;<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
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>&#13;      The printout of the above program will be:
     </P
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>2147483648
1</PRE
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