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> (PHP 3, PHP 4, PHP 5)</P
>prev -- Retrocede o ponteiro interno de um array</DIV
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>mixed <B
CLASS="methodname"
>prev</B
> ( array array )<BR
></BR
><P
> Retorna o valor do array que está na posição anterior a posição apontada
pelo ponteiro interno, ou <TT
CLASS="constant"
><B
>FALSE</B
></TT
> se houver mais elementos.
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> Se o array contiver elementos vazios então essa função retornará
<TT
CLASS="constant"
><B
>FALSE</B
></TT
> para esses elementos.
Para percorrer corretamente arrays que podem conter elementos vazios
veja a função <A
HREF="function.each.html"
><B
CLASS="function"
>each()</B
></A
>.
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>
<B
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>prev()</B
> funciona da mesma forma que
<A
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><B
CLASS="function"
>next()</B
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>, com a única diferença sendo de que a primeira
retrocede o ponteiro interno em uma posição ao invés de avançá-lo.
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>Exemplo 1. Exemplo de uso <B
CLASS="function"
>prev()</B
> e funções relacionadas</B
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><code><font color="#000000">
<font color="#0000BB"><?php <br /> $transport </font><font color="#007700">= array(</font><font color="#DD0000">'foot'</font><font color="#007700">, </font><font color="#DD0000">'bike'</font><font color="#007700">, </font><font color="#DD0000">'car'</font><font color="#007700">, </font><font color="#DD0000">'plane'</font><font color="#007700">); <br /> </font><font color="#0000BB">$mode </font><font color="#007700">= </font><font color="#0000BB">current</font><font color="#007700">(</font><font color="#0000BB">$transport</font><font color="#007700">); </font><font color="#FF8000">// $mode = 'foot'; <br /> </font><font color="#0000BB">$mode </font><font color="#007700">= </font><font color="#0000BB">next</font><font color="#007700">(</font><font color="#0000BB">$transport</font><font color="#007700">); </font><font color="#FF8000">// $mode = 'bike'; <br /> </font><font color="#0000BB">$mode </font><font color="#007700">= </font><font color="#0000BB">next</font><font color="#007700">(</font><font color="#0000BB">$transport</font><font color="#007700">); </font><font color="#FF8000">// $mode = 'car'; <br /> </font><font color="#0000BB">$mode </font><font color="#007700">= </font><font color="#0000BB">prev</font><font color="#007700">(</font><font color="#0000BB">$transport</font><font color="#007700">); </font><font color="#FF8000">// $mode = 'bike'; <br /> </font><font color="#0000BB">$mode </font><font color="#007700">= </font><font color="#0000BB">end</font><font color="#007700">(</font><font color="#0000BB">$transport</font><font color="#007700">); </font><font color="#FF8000">// $mode = 'plane'; <br /> </font><font color="#0000BB">?></font>
</font>
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> Veja também <A
HREF="function.current.html"
><B
CLASS="function"
>current()</B
></A
>, <A
HREF="function.end.html"
><B
CLASS="function"
>end()</B
></A
>,
<A
HREF="function.next.html"
><B
CLASS="function"
>next()</B
></A
> e <A
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><B
CLASS="function"
>reset()</B
></A
>.
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