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>key</H1
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> (PHP 3, PHP 4, PHP 5)</P
>key -- Retorna uma chave de um array associativo</DIV
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>Descrição</H2
>mixed <B
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>key</B
> ( array array )<BR
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> <B
CLASS="function"
>key()</B
> retorna a chave da posição corrente de um
array.
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><code><font color="#000000">
<font color="#0000BB"><?php <br /> $array </font><font color="#007700">= array( <br /> </font><font color="#DD0000">'fruit1' </font><font color="#007700">=> </font><font color="#DD0000">'apple'</font><font color="#007700">, <br /> </font><font color="#DD0000">'fruit2' </font><font color="#007700">=> </font><font color="#DD0000">'orange'</font><font color="#007700">, <br /> </font><font color="#DD0000">'fruit3' </font><font color="#007700">=> </font><font color="#DD0000">'grape'</font><font color="#007700">, <br /> </font><font color="#DD0000">'fruit4' </font><font color="#007700">=> </font><font color="#DD0000">'apple'</font><font color="#007700">, <br /> </font><font color="#DD0000">'fruit5' </font><font color="#007700">=> </font><font color="#DD0000">'apple'</font><font color="#007700">); <br /> <br /> </font><font color="#FF8000">// este ciclo exibirá toda a chave do array associativo <br /> // onde o valor é igual a "apple" <br /> </font><font color="#007700">while (</font><font color="#0000BB">$fruit_name </font><font color="#007700">= </font><font color="#0000BB">current</font><font color="#007700">(</font><font color="#0000BB">$array</font><font color="#007700">)) { <br /> if (</font><font color="#0000BB">$fruit_name </font><font color="#007700">== </font><font color="#DD0000">'apple'</font><font color="#007700">) { <br /> echo </font><font color="#0000BB">key</font><font color="#007700">(</font><font color="#0000BB">$array</font><font color="#007700">).</font><font color="#DD0000">'<br>'</font><font color="#007700">; <br /> } <br /> </font><font color="#0000BB">next</font><font color="#007700">(</font><font color="#0000BB">$array</font><font color="#007700">); <br /> } <br /> </font><font color="#0000BB">?></font>
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> Veja também <A
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><B
CLASS="function"
>current()</B
></A
> e <A
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><B
CLASS="function"
>next()</B
></A
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