Sophie: php-manual-ro-0:20051028-1 noarch

php-manual-ro-20051028-1.noarch.rpm

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>pow</H1
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><P
>    (PHP 3, PHP 4 , PHP 5)</P
>pow&nbsp;--&nbsp;Exponential expression</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN50828"
></A
><H2
>Description</H2
>number <B
CLASS="methodname"
>pow</B
> ( number base, number exp)<BR
></BR
><P
>&#13;     Returns <VAR
CLASS="parameter"
>base</VAR
> raised to the power of
     <VAR
CLASS="parameter"
>exp</VAR
>. If possible, this function will
     return an <A
HREF="language.types.integer.html"
><B
CLASS="type"
>integer</B
></A
>.
    </P
><P
>&#13;     If the power cannot be computed, a warning will be issued,
     and <B
CLASS="function"
>pow()</B
> will return <TT
CLASS="constant"
><B
>FALSE</B
></TT
>. Since PHP 4.2.0
     <B
CLASS="function"
>pow()</B
> doesn't issue any warning.
    </P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Not&#227;: </B
>
      PHP cannot handle negative <VAR
CLASS="parameter"
>base</VAR
>s.
     </P
></BLOCKQUOTE
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><B
>Exemplu 1. Some examples of <B
CLASS="function"
>pow()</B
></B
></P
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><code><font color="#000000">
<font color="#0000BB">&lt;?php<br /><br />var_dump</font><font color="#007700">(</font><font color="#0000BB">pow</font><font color="#007700">(</font><font color="#0000BB">2</font><font color="#007700">, </font><font color="#0000BB">8</font><font color="#007700">)); </font><font color="#FF8000">// int(256)<br /></font><font color="#007700">echo </font><font color="#0000BB">pow</font><font color="#007700">(-</font><font color="#0000BB">1</font><font color="#007700">, </font><font color="#0000BB">20</font><font color="#007700">); </font><font color="#FF8000">// 1<br /></font><font color="#007700">echo </font><font color="#0000BB">pow</font><font color="#007700">(</font><font color="#0000BB">0</font><font color="#007700">, </font><font color="#0000BB">0</font><font color="#007700">); </font><font color="#FF8000">// 1<br /><br /></font><font color="#007700">echo </font><font color="#0000BB">pow</font><font color="#007700">(-</font><font color="#0000BB">1</font><font color="#007700">, </font><font color="#0000BB">5.5</font><font color="#007700">); </font><font color="#FF8000">// error<br /><br /></font><font color="#0000BB">?&gt;</font>
</font>
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>&#13;      In PHP 4.0.6 and earlier <B
CLASS="function"
>pow()</B
> always returned
      a <A
HREF="language.types.float.html"
><B
CLASS="type"
>float</B
></A
>, and did not issue warnings.
     </P
></TD
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></DIV
><P
>&#13;     See also:
     <A
HREF="function.exp.html"
><B
CLASS="function"
>exp()</B
></A
>,
     <A
HREF="function.sqrt.html"
><B
CLASS="function"
>sqrt()</B
></A
>,
     <A
HREF="function.bcpow.html"
><B
CLASS="function"
>bcpow()</B
></A
>, and
     <A
HREF="function.gmp-pow.html"
><B
CLASS="function"
>gmp_pow()</B
></A
>,
    </P
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