Sophie: php-manual-en-4.3.0-2mdk noarch

php-manual-en-4.3.0-2mdk.noarch.rpm

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>pow</H1
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><P
>    (PHP 3, PHP 4 )</P
>pow&nbsp;--&nbsp;Exponential expression</DIV
><DIV
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><H2
>Description</H2
>number <B
CLASS="methodname"
>pow</B
> ( number base, number exp)<BR
></BR
><P
>&#13;     Returns <TT
CLASS="parameter"
><I
>base</I
></TT
> raised to the power of 
     <TT
CLASS="parameter"
><I
>exp</I
></TT
>. 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
>.
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><B
>Example 1. Some examples of <B
CLASS="function"
>pow()</B
></B
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><PRE
CLASS="php"
>&#60;?php

var_dump( pow(2,8) ); // int(256)
echo pow(-1,20); // 1
echo pow(0, 0); // 1

echo pow(-1, 5.5); // error

?&#62;</PRE
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>Warning</B
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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
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><P
> 
     See also <A
HREF="function.exp.html"
><B
CLASS="function"
>exp()</B
></A
> and <A
HREF="function.sqrt.html"
><B
CLASS="function"
>sqrt()</B
></A
>.
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