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_flip</H1
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NAME="AEN10641"
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><P
>    (PHP 4, PHP 5)</P
>array_flip&nbsp;--&nbsp;Inverte as relações entre chaves e valores</DIV
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><H2
>Descrições</H2
>array <B
CLASS="methodname"
>array_flip</B
> ( array trans )<BR
></BR
><P
>&#13;     <B
CLASS="function"
>array_flip()</B
> retorna um <A
HREF="language.types.array.html"
><B
CLASS="type"
>array</B
></A
> com
     com a relação entre suas chaves e valores invertida, ou seja,
     as chaves de <CODE
CLASS="parameter"
>trans</CODE
> passam a ser os valores e
     os valores de <CODE
CLASS="parameter"
>trans</CODE
> passam a ser as chaves.
    </P
><P
>&#13;     Note que os valores de <CODE
CLASS="parameter"
>trans</CODE
> devem ser chaves
     válidas, ou seja, eles precisam ser inteiros não negativos
     ou <A
HREF="language.types.string.html"
><B
CLASS="type"
>string</B
></A
>.
     Um aviso será mostrado se um valor é de um tipo inválido para chaves,
     e o par chave/valor em questão <SPAN
CLASS="emphasis"
><I
CLASS="emphasis"
>não será invertido</I
></SPAN
>.
    </P
><P
>&#13;     Se um valor tem várias ocorrências, a última chave será usada
     como valor, e todos os outros serão perdidos.
    </P
><P
>&#13;     <B
CLASS="function"
>array_flip()</B
> retorna <TT
CLASS="constant"
><B
>FALSE</B
></TT
>
     se falhar.
    </P
><P
>&#13;     <TABLE
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><P
><B
>Exemplo 1. Exemplo de <B
CLASS="function"
>array_flip()</B
></B
></P
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><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$trans </font><font color="#007700">= </font><font color="#0000BB">array_flip</font><font color="#007700">(</font><font color="#0000BB">$trans</font><font color="#007700">);<br /></font><font color="#0000BB">$original </font><font color="#007700">= </font><font color="#0000BB">strtr</font><font color="#007700">(</font><font color="#0000BB">$str</font><font color="#007700">, </font><font color="#0000BB">$trans</font><font color="#007700">);<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
    </P
><P
>&#13;     <TABLE
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><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN10672"
></A
><P
><B
>Exemplo 2. Exemplo de <B
CLASS="function"
>array_flip()</B
> : colisão</B
></P
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><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$trans </font><font color="#007700">= array(</font><font color="#DD0000">"a" </font><font color="#007700">=&gt; </font><font color="#0000BB">1</font><font color="#007700">, </font><font color="#DD0000">"b" </font><font color="#007700">=&gt; </font><font color="#0000BB">1</font><font color="#007700">, </font><font color="#DD0000">"c" </font><font color="#007700">=&gt; </font><font color="#0000BB">2</font><font color="#007700">);<br /></font><font color="#0000BB">$trans </font><font color="#007700">= </font><font color="#0000BB">array_flip</font><font color="#007700">(</font><font color="#0000BB">$trans</font><font color="#007700">);<br /></font><font color="#0000BB">print_r</font><font color="#007700">(</font><font color="#0000BB">$trans</font><font color="#007700">);<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
><P
>&#13;       Agora <CODE
CLASS="varname"
>$trans</CODE
> é:
      </P
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><PRE
CLASS="screen"
>Array
(
    [1] =&#62; b
    [2] =&#62; c
)</PRE
></TD
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>
    </P
><P
>&#13;     Veja também <A
HREF="function.array-values.html"
><B
CLASS="function"
>array_values()</B
></A
>,
     <A
HREF="function.array-keys.html"
><B
CLASS="function"
>array_keys()</B
></A
> e <A
HREF="function.array-reverse.html"
><B
CLASS="function"
>array_reverse()</B
></A
>.
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