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><H1
><A
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>natsort</A
></H1
><DIV
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><A
NAME="AEN5533"
></A
><P
>    (PHP4 &#62;= 4.0RC2)</P
>natsort&nbsp;--&nbsp;
     Sort an array using a "natural order" algorithm
    </DIV
><DIV
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><H2
>Description</H2
><DIV
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><P
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><P
><CODE
><CODE
CLASS="FUNCDEF"
>void <B
CLASS="function"
>natsort</B
></CODE
> (array array)</CODE
></P
><P
></P
></DIV
><P
>&#13;     This function implements a sort algorithm that orders
     alphanumeric strings in the way a human being would.  This is
     described as a "natural ordering". An example of the difference
     between this algorithm and the regular computer string sorting
     algorithms (used in <A
HREF="function.sort.html"
><B
CLASS="function"
>sort()</B
></A
>) can be seen below:
    </P
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><B
>Example 1. <B
CLASS="function"
>natsort()</B
> example</B
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>&#13;$array1 = $array2 = array ("img12.png","img10.png","img2.png","img1.png");          

sort($array1);
echo "Standard sorting\n";
print_r($array1);

natsort($array2);
echo "\nNatural order sorting\n";
print_r($array2);
      </PRE
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>
    </P
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>&#13;     The code above will generate the following output:
    </P
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CLASS="programlisting"
>&#13;Standard sorting
Array
(
    [0] =&#62; img1.png
    [1] =&#62; img10.png
    [2] =&#62; img12.png
    [3] =&#62; img2.png
)

Natural order sorting
Array
(
    [3] =&#62; img1.png
    [2] =&#62; img2.png
    [1] =&#62; img10.png
    [0] =&#62; img12.png
)
      </PRE
></TD
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><P
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>
     For more infomation see: Martin Pool's <A
HREF="http://www.linuxcare.com.au/projects/natsort/"
TARGET="_top"
>Natural Order String Comparison</A
>
     page.
    </P
><P
>&#13;     See also <A
HREF="function.natcasesort.html"
><B
CLASS="function"
>natcasesort()</B
></A
>,
     <A
HREF="function.strnatcmp.html"
><B
CLASS="function"
>strnatcmp()</B
></A
> and
     <A
HREF="function.strnatcasecmp.html"
><B
CLASS="function"
>strnatcasecmp()</B
></A
>.
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