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>array_map</H1
><DIV
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><A
NAME="AEN10985"
></A
><P
>    (PHP 4 &#62;= 4.0.6, PHP 5)</P
>array_map&nbsp;--&nbsp;Aplica uma função em todos os elementos dos arrays dados</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN10988"
></A
><H2
>Descrição</H2
>array <B
CLASS="methodname"
>array_map</B
> ( callback callback, array arr1 [, array ...] )<BR
></BR
><P
>&#13;     <B
CLASS="function"
>array_map()</B
> retorna um array contendo todos
     os elementos de <CODE
CLASS="parameter"
>arr1</CODE
> depois de aplicada
     uma determinada função em cada um. O número de parâmetros que esta função
     aceita deve coincidir com o número de arrays passados para a
     <B
CLASS="function"
>array_map()</B
>
    </P
><P
>&#13;     <TABLE
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN11007"
></A
><P
><B
>Exemplo 1. Exemplo de <B
CLASS="function"
>array_map()</B
></B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br /></font><font color="#007700">function </font><font color="#0000BB">cubo</font><font color="#007700">(</font><font color="#0000BB">$n</font><font color="#007700">)<br />{<br />&nbsp;&nbsp;&nbsp;&nbsp;return </font><font color="#0000BB">$n</font><font color="#007700">*</font><font color="#0000BB">$n</font><font color="#007700">*</font><font color="#0000BB">$n</font><font color="#007700">;<br />}<br /><br /></font><font color="#0000BB">$a </font><font color="#007700">= array(</font><font color="#0000BB">1</font><font color="#007700">, </font><font color="#0000BB">2</font><font color="#007700">, </font><font color="#0000BB">3</font><font color="#007700">, </font><font color="#0000BB">4</font><font color="#007700">, </font><font color="#0000BB">5</font><font color="#007700">);<br /></font><font color="#0000BB">$b </font><font color="#007700">= </font><font color="#0000BB">array_map</font><font color="#007700">(</font><font color="#DD0000">"cubo"</font><font color="#007700">, </font><font color="#0000BB">$a</font><font color="#007700">);<br /></font><font color="#0000BB">print_r</font><font color="#007700">(</font><font color="#0000BB">$b</font><font color="#007700">);<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
><P
>&#13;       E programa acima faz com que <CODE
CLASS="varname"
>$b</CODE
> tenha:
      </P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
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><TR
><TD
><PRE
CLASS="screen"
>Array
(
    [0] =&#62; 1
    [1] =&#62; 8
    [2] =&#62; 27
    [3] =&#62; 64
    [4] =&#62; 125
)</PRE
></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
    </P
><P
>&#13;     <TABLE
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN11015"
></A
><P
><B
>Exemplo 2. <B
CLASS="function"
>array_map()</B
> - usando mais de um array</B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br /></font><font color="#007700">function </font><font color="#0000BB">mostrar_Espanhol</font><font color="#007700">(</font><font color="#0000BB">$n</font><font color="#007700">, </font><font color="#0000BB">$m</font><font color="#007700">)<br />{<br />&nbsp;&nbsp;&nbsp;&nbsp;return </font><font color="#DD0000">"O número $n é chamado de $m na Espanha"</font><font color="#007700">;<br />}<br /><br />function </font><font color="#0000BB">map_Espanhol</font><font color="#007700">(</font><font color="#0000BB">$n</font><font color="#007700">, </font><font color="#0000BB">$m</font><font color="#007700">)<br />{<br />&nbsp;&nbsp;&nbsp;&nbsp;return array(</font><font color="#0000BB">$n </font><font color="#007700">=&gt; </font><font color="#0000BB">$m</font><font color="#007700">);<br />}<br /><br /></font><font color="#0000BB">$a </font><font color="#007700">= array(</font><font color="#0000BB">1</font><font color="#007700">, </font><font color="#0000BB">2</font><font color="#007700">, </font><font color="#0000BB">3</font><font color="#007700">, </font><font color="#0000BB">4</font><font color="#007700">, </font><font color="#0000BB">5</font><font color="#007700">);<br /></font><font color="#0000BB">$b </font><font color="#007700">= array(</font><font color="#DD0000">"uno"</font><font color="#007700">, </font><font color="#DD0000">"dos"</font><font color="#007700">, </font><font color="#DD0000">"tres"</font><font color="#007700">, </font><font color="#DD0000">"cuatro"</font><font color="#007700">, </font><font color="#DD0000">"cinco"</font><font color="#007700">);<br /><br /></font><font color="#0000BB">$c </font><font color="#007700">= </font><font color="#0000BB">array_map</font><font color="#007700">(</font><font color="#DD0000">"mostrar_Espanhol"</font><font color="#007700">, </font><font color="#0000BB">$a</font><font color="#007700">, </font><font color="#0000BB">$b</font><font color="#007700">);<br /></font><font color="#0000BB">print_r</font><font color="#007700">(</font><font color="#0000BB">$c</font><font color="#007700">);<br /><br /></font><font color="#0000BB">$d </font><font color="#007700">= </font><font color="#0000BB">array_map</font><font color="#007700">(</font><font color="#DD0000">"map_Espanhol"</font><font color="#007700">, </font><font color="#0000BB">$a </font><font color="#007700">, </font><font color="#0000BB">$b</font><font color="#007700">);<br /></font><font color="#0000BB">print_r</font><font color="#007700">(</font><font color="#0000BB">$d</font><font color="#007700">);<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
><P
>O exemplo acima irá imprimir:</P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><PRE
CLASS="screen"
>// Saída de $c
Array
(
    [0] =&#62; O número 1 é chamado de uno na Espanha
    [1] =&#62; O número 2 é chamado de dos na Espanha
    [2] =&#62; O número 3 é chamado de tres na Espanha
    [3] =&#62; O número 4 é chamado de cuatro na Espanha
    [4] =&#62; O número 5 é chamado de cinco na Espanha
)

// Saída de $d
Array
(
    [0] =&#62; Array
        (
            [1] =&#62; uno
        )

    [1] =&#62; Array
        (
            [2] =&#62; dos
        )

    [2] =&#62; Array
        (
            [3] =&#62; tres
        )

    [3] =&#62; Array
        (
            [4] =&#62; cuatro
        )

    [4] =&#62; Array
        (
            [5] =&#62; cinco
        )

)</PRE
></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
    </P
><P
>&#13;     Normalmente quando se usa dois ou mais arrays, eles devem ter o mesmo tamanho
     porque a função callback é aplicada paralelamente nos elementos
     correpondentes.
     Se os arrays tem tamanhos diferentes, o menor array será extendido com
     elementos vazios.
    </P
><P
>&#13;     Uma forma interessante de se usar esta função é na construção de um array de
     arrays, o que pode ser facilmente feito usando <TT
CLASS="constant"
><B
>NULL</B
></TT
>
     como o nome da função callback.
    </P
><P
>&#13;     <TABLE
WIDTH="100%"
BORDER="0"
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CELLSPACING="0"
CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN11025"
></A
><P
><B
>Exemplo 3. Criando um array de arrays</B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
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><TR
><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$a </font><font color="#007700">= array(</font><font color="#0000BB">1</font><font color="#007700">, </font><font color="#0000BB">2</font><font color="#007700">, </font><font color="#0000BB">3</font><font color="#007700">, </font><font color="#0000BB">4</font><font color="#007700">, </font><font color="#0000BB">5</font><font color="#007700">);<br /></font><font color="#0000BB">$b </font><font color="#007700">= array(</font><font color="#DD0000">"um"</font><font color="#007700">, </font><font color="#DD0000">"dois"</font><font color="#007700">, </font><font color="#DD0000">"tres"</font><font color="#007700">, </font><font color="#DD0000">"quatro"</font><font color="#007700">, </font><font color="#DD0000">"cinco"</font><font color="#007700">);<br /></font><font color="#0000BB">$c </font><font color="#007700">= array(</font><font color="#DD0000">"uno"</font><font color="#007700">, </font><font color="#DD0000">"dos"</font><font color="#007700">, </font><font color="#DD0000">"tres"</font><font color="#007700">, </font><font color="#DD0000">"cuatro"</font><font color="#007700">, </font><font color="#DD0000">"cinco"</font><font color="#007700">);<br /><br /></font><font color="#0000BB">$d </font><font color="#007700">= </font><font color="#0000BB">array_map</font><font color="#007700">(</font><font color="#0000BB">null</font><font color="#007700">, </font><font color="#0000BB">$a</font><font color="#007700">, </font><font color="#0000BB">$b</font><font color="#007700">, </font><font color="#0000BB">$c</font><font color="#007700">);<br /></font><font color="#0000BB">print_r</font><font color="#007700">(</font><font color="#0000BB">$d</font><font color="#007700">);<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
><P
>O exemplo acima irá imprimir:</P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><PRE
CLASS="screen"
>Array
(
    [0] =&#62; Array
        (
            [0] =&#62; 1
            [1] =&#62; one
            [2] =&#62; uno
        )

    [1] =&#62; Array
        (
            [0] =&#62; 2
            [1] =&#62; two
            [2] =&#62; dos
        )

    [2] =&#62; Array
        (
            [0] =&#62; 3
            [1] =&#62; three
            [2] =&#62; tres
        )

    [3] =&#62; Array
        (
            [0] =&#62; 4
            [1] =&#62; four
            [2] =&#62; cuatro
        )

    [4] =&#62; Array
        (
            [0] =&#62; 5
            [1] =&#62; five
            [2] =&#62; cinco
        )

)</PRE
></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
     </P
><P
>&#13;     Veja também <A
HREF="function.array-filter.html"
><B
CLASS="function"
>array_filter()</B
></A
>,
     <A
HREF="function.array-reduce.html"
><B
CLASS="function"
>array_reduce()</B
></A
> ,
     <A
HREF="function.array-walk.html"
><B
CLASS="function"
>array_walk()</B
></A
>,
     <A
HREF="function.create-function.html"
><B
CLASS="function"
>create_function()</B
></A
>, e
     informações sobre o tipo <A
HREF="language.pseudo-types.html#language.types.callback"
>callback</A
>.
    </P
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