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

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>array_diff</H1
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><P
>    (PHP 4 &#62;= 4.0.1, PHP 5)</P
>array_diff&nbsp;--&nbsp;Analisa as diferenças entre arrays</DIV
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CLASS="refsect1"
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NAME="AEN10493"
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><H2
>Descrição</H2
>array <B
CLASS="methodname"
>array_diff</B
> ( array array1, array array2 [, array ...] )<BR
></BR
><P
>&#13;     <B
CLASS="function"
>array_diff()</B
> retorna um array contendo todos os
     valores de <CODE
CLASS="parameter"
>array1</CODE
> que não estão presentes
     em nenhum dos outros argumentos. Note que as chaves são preservadas.
    </P
><P
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>Exemplo 1. Exemplo de <B
CLASS="function"
>array_diff()</B
></B
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><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$array1 </font><font color="#007700">= array(</font><font color="#DD0000">"a" </font><font color="#007700">=&gt; </font><font color="#DD0000">"verde"</font><font color="#007700">, </font><font color="#DD0000">"vermelho"</font><font color="#007700">, </font><font color="#DD0000">"azul"</font><font color="#007700">, </font><font color="#DD0000">"vermelho"</font><font color="#007700">);<br /></font><font color="#0000BB">$array2 </font><font color="#007700">= array(</font><font color="#DD0000">"b" </font><font color="#007700">=&gt; </font><font color="#DD0000">"verde"</font><font color="#007700">, </font><font color="#DD0000">"amarelo"</font><font color="#007700">, </font><font color="#DD0000">"vermelho"</font><font color="#007700">);<br /></font><font color="#0000BB">$result </font><font color="#007700">= </font><font color="#0000BB">array_diff</font><font color="#007700">(</font><font color="#0000BB">$array1</font><font color="#007700">, </font><font color="#0000BB">$array2</font><font color="#007700">);<br /></font><font color="#0000BB">print_r</font><font color="#007700">(</font><font color="#0000BB">$result</font><font color="#007700">);<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
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><P
>&#13;        Multiplas ocorrencias de $array1 são todas tratadas da mesma maneira.
        Isto irá mostrar:
       </P
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>Array
(
  [1] =&#62; blue
)</PRE
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>
    </P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Nota: </B
>
      Dois elementos são considerados iguais se, e somente se,
      <TT
CLASS="literal"
>(string) $elem1 === (string) $elem2</TT
>. Em palavras:
      quando a representação em string é a mesma.
      
     </P
></BLOCKQUOTE
></DIV
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Nota: </B
>
      Note que esta função faz compara apenas uma dimensão de um array com
      dimensão n. Mas, obviamente, você pode comparar outras dimensões usando
      <TT
CLASS="literal"
>array_diff($array1[0], $array2[0]);</TT
>.
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>&#13;      Não estava funcionando no PHP 4.0.4!
      
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>&#13;     Veja também <A
HREF="function.array-diff-assoc.html"
><B
CLASS="function"
>array_diff_assoc()</B
></A
>, <A
HREF="function.array-intersect.html"
><B
CLASS="function"
>array_intersect()</B
></A
>
     e <A
HREF="function.array-intersect-assoc.html"
><B
CLASS="function"
>array_intersect_assoc()</B
></A
>.
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