Sophie: php-manual-pt_BR-5.2.4-1mdv2008.1 noarch

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

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>array_keys</H1
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>    (PHP 4, PHP 5)</P
>array_keys&nbsp;--&nbsp;Retorna todas as chaves de um array</DIV
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>Descrição</H2
>array <B
CLASS="methodname"
>array_keys</B
> ( array input [, mixed search_value [, bool strict]] )<BR
></BR
><P
>&#13;     <B
CLASS="function"
>array_keys()</B
> retorna as chaves, numéricas e
     string, do array <CODE
CLASS="parameter"
>input</CODE
>.
    </P
><P
>&#13;     Se o parâmetro opcional <CODE
CLASS="parameter"
>search_value</CODE
> for
     especificado, então apenas as chaves para esse valor serão retornadas.
     Do contrário, todas as chaves de <CODE
CLASS="parameter"
>input</CODE
> serão retornadas.
     A partir do PHP 5, você pode usar o parãmetro <CODE
CLASS="parameter"
>strict</CODE
> para
     comparação incluindo tipo (===).
    </P
><P
>&#13;     <TABLE
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><B
>Exemplo 1. Exemplo de <B
CLASS="function"
>array_keys()</B
></B
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><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$array </font><font color="#007700">= array(</font><font color="#0000BB">0 </font><font color="#007700">=&gt; </font><font color="#0000BB">100</font><font color="#007700">, </font><font color="#DD0000">"cor" </font><font color="#007700">=&gt; </font><font color="#DD0000">"vermelho"</font><font color="#007700">);<br /></font><font color="#0000BB">print_r</font><font color="#007700">(</font><font color="#0000BB">array_keys</font><font color="#007700">(</font><font color="#0000BB">$array</font><font color="#007700">));<br /><br /></font><font color="#0000BB">$array </font><font color="#007700">= array(</font><font color="#DD0000">"azul"</font><font color="#007700">, </font><font color="#DD0000">"vermelho"</font><font color="#007700">, </font><font color="#DD0000">"verde"</font><font color="#007700">, </font><font color="#DD0000">"azul"</font><font color="#007700">, </font><font color="#DD0000">"azul"</font><font color="#007700">);<br /></font><font color="#0000BB">print_r</font><font color="#007700">(</font><font color="#0000BB">array_keys</font><font color="#007700">(</font><font color="#0000BB">$array</font><font color="#007700">, </font><font color="#DD0000">"azul"</font><font color="#007700">));<br /><br /></font><font color="#0000BB">$array </font><font color="#007700">= array(</font><font color="#DD0000">"cor" </font><font color="#007700">=&gt; array(</font><font color="#DD0000">"azul"</font><font color="#007700">, </font><font color="#DD0000">"vermelho"</font><font color="#007700">, </font><font color="#DD0000">"verde"</font><font color="#007700">), </font><font color="#DD0000">"tamanho" </font><font color="#007700">=&gt; array(</font><font color="#DD0000">"pequeno"</font><font color="#007700">, </font><font color="#DD0000">"medio"</font><font color="#007700">, </font><font color="#DD0000">"grande"</font><font color="#007700">));<br /></font><font color="#0000BB">print_r</font><font color="#007700">(</font><font color="#0000BB">array_keys</font><font color="#007700">(</font><font color="#0000BB">$array</font><font color="#007700">));<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
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><P
>O exemplo acima irá imprimir:</P
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>Array
(
    [0] =&#62; 0
    [1] =&#62; cor
)
Array
(
    [0] =&#62; 0
    [1] =&#62; 3
    [2] =&#62; 4
)
Array
(
    [0] =&#62; cor
    [1] =&#62; tamanho
)</PRE
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>
    </P
><P
>&#13;     Veja também <A
HREF="function.array-values.html"
><B
CLASS="function"
>array_values()</B
></A
> e <A
HREF="function.array-key-exists.html"
><B
CLASS="function"
>array_key_exists()</B
></A
>.
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