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php-manual-pt_BR-5.2.4-1mdv2008.1.noarch.rpm

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>strnatcmp</H1
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><P
>    (PHP 4, PHP 5)</P
>strnatcmp&nbsp;--&nbsp;
     Comparação de strings usando o algoritmo "natural order"
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>Descrição</H2
>int <B
CLASS="methodname"
>strnatcmp</B
> ( string str1, string str2 )<BR
></BR
><P
>&#13;     Esta função implementa um algoritmo de comparação de strings alfanumérico
     do jeito que um ser humano faz, isto é descrito como "ordem natural". 
     Um exemplo da diferença entre este algoritmo e os algoritmos regulares de ordenação
     (usado em <A
HREF="function.strcmp.html"
><B
CLASS="function"
>strcmp()</B
></A
>) pode ser visto abaixo:
     <DIV
CLASS="informalexample"
><P
></P
><A
NAME="AEN221392"
></A
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><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$arr1 </font><font color="#007700">= </font><font color="#0000BB">$arr2 </font><font color="#007700">= array(</font><font color="#DD0000">"img12.png"</font><font color="#007700">,</font><font color="#DD0000">"img10.png"</font><font color="#007700">,</font><font color="#DD0000">"img2.png"</font><font color="#007700">,</font><font color="#DD0000">"img1.png"</font><font color="#007700">);<br />echo </font><font color="#DD0000">"Comparação de string padrão\n"</font><font color="#007700">;<br /></font><font color="#0000BB">usort</font><font color="#007700">(</font><font color="#0000BB">$arr1</font><font color="#007700">,</font><font color="#DD0000">"strcmp"</font><font color="#007700">);<br /></font><font color="#0000BB">print_r</font><font color="#007700">(</font><font color="#0000BB">$arr1</font><font color="#007700">);<br />echo </font><font color="#DD0000">"\nComparação usando ordem natural\n"</font><font color="#007700">;<br /></font><font color="#0000BB">usort</font><font color="#007700">(</font><font color="#0000BB">$arr2</font><font color="#007700">,</font><font color="#DD0000">"strnatcmp"</font><font color="#007700">);<br /></font><font color="#0000BB">print_r</font><font color="#007700">(</font><font color="#0000BB">$arr2</font><font color="#007700">);<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
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>
     O código acima irá gerar a seguinte saída:
     <DIV
CLASS="informalexample"
><P
></P
><A
NAME="AEN221394"
></A
><TABLE
BORDER="0"
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><PRE
CLASS="screen"
>Comparação de string padrão
Array
(
    [0] =&#62; img1.png
    [1] =&#62; img10.png
    [2] =&#62; img12.png
    [3] =&#62; img2.png
)

Comparação usando ordem natural
Array
(
    [0] =&#62; img1.png
    [1] =&#62; img2.png
    [2] =&#62; img10.png
    [3] =&#62; img12.png
)</PRE
></TD
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><P
></P
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>
     Para maiores informações veja: Martin Pool's <A
HREF="http://sourcefrog.net/projects/natsort/"
TARGET="_top"
>Natural Order String Comparison</A
>
    </P
><P
>&#13;     Similar a outras funções de comparação de string, esta retorna
     &#60; 0 se <CODE
CLASS="parameter"
>str1</CODE
> é menor do que
     <CODE
CLASS="parameter"
>str2</CODE
>; &#62; 0 se
     <CODE
CLASS="parameter"
>str1</CODE
> é maior do que
     <CODE
CLASS="parameter"
>str2</CODE
>, e 0 se forem iguais.
    </P
><P
>&#13;     Note que esta coparação diferencia maiúsculas e minúsculas.
    </P
><P
>&#13;     Veja também <A
HREF="function.ereg.html"
><B
CLASS="function"
>ereg()</B
></A
>,
     <A
HREF="function.strcasecmp.html"
><B
CLASS="function"
>strcasecmp()</B
></A
>, <A
HREF="function.substr.html"
><B
CLASS="function"
>substr()</B
></A
>,
     <A
HREF="function.stristr.html"
><B
CLASS="function"
>stristr()</B
></A
>, <A
HREF="function.strcmp.html"
><B
CLASS="function"
>strcmp()</B
></A
>,
     <A
HREF="function.strncmp.html"
><B
CLASS="function"
>strncmp()</B
></A
>, <A
HREF="function.strncasecmp.html"
><B
CLASS="function"
>strncasecmp()</B
></A
>,
     <A
HREF="function.strnatcasecmp.html"
><B
CLASS="function"
>strnatcasecmp()</B
></A
>, <A
HREF="function.strstr.html"
><B
CLASS="function"
>strstr()</B
></A
>,
     <A
HREF="function.natsort.html"
><B
CLASS="function"
>natsort()</B
></A
> e <A
HREF="function.natcasesort.html"
><B
CLASS="function"
>natcasesort()</B
></A
>.
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