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

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>Operadores de Arrays</A
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><P
><B
>Tabela 15-7. Operadores de array</B
></P
><TABLE
BORDER="1"
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><COL><COL><COL><THEAD
><TR
><TH
>Exemplo</TH
><TH
>Nome</TH
><TH
>Resultado</TH
></TR
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><TBODY
><TR
><TD
>$a + $b</TD
><TD
>União</TD
><TD
>União de $a e $b.</TD
></TR
><TR
><TD
>$a == $b</TD
><TD
>Igualdade</TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
> se $a e $b tem os mesmos elementos.</TD
></TR
><TR
><TD
>$a === $b</TD
><TD
>Identidade</TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
> se $a e $b tem os mesmos elementos na mesma ordem.</TD
></TR
><TR
><TD
>$a != $b</TD
><TD
>Desigualdade</TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
> se $a não é igual a $b.</TD
></TR
><TR
><TD
>$a &#60;&#62; $b</TD
><TD
>Desigualdade</TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
> se $a não é igual a $b.</TD
></TR
><TR
><TD
>$a !== $b</TD
><TD
>Não identidade</TD
><TD
><TT
CLASS="constant"
><B
>TRUE</B
></TT
> se $a não é identico a $b.</TD
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><P
>&#13;    O operador <TT
CLASS="literal"
>+</TT
>
    acrescenta o array da direita no array da esquerda, contudo,
    chaves duplicadas NÃO são sobrescritas.
   </P
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><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$a </font><font color="#007700">= array(</font><font color="#DD0000">"a" </font><font color="#007700">=&gt; </font><font color="#DD0000">"maçã"</font><font color="#007700">, </font><font color="#DD0000">"b" </font><font color="#007700">=&gt; </font><font color="#DD0000">"banana"</font><font color="#007700">);<br /></font><font color="#0000BB">$b </font><font color="#007700">= array(</font><font color="#DD0000">"a" </font><font color="#007700">=&gt;</font><font color="#DD0000">"pêra"</font><font color="#007700">, </font><font color="#DD0000">"b" </font><font color="#007700">=&gt; </font><font color="#DD0000">"framboesa"</font><font color="#007700">, </font><font color="#DD0000">"c" </font><font color="#007700">=&gt; </font><font color="#DD0000">"morango"</font><font color="#007700">);<br /><br /></font><font color="#0000BB">$c </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="#FF8000">// Uniao de $a e $b<br /></font><font color="#007700">echo </font><font color="#DD0000">"União de \$a e \$b: \n"</font><font color="#007700">;<br /></font><font color="#0000BB">var_dump</font><font color="#007700">(</font><font color="#0000BB">$c</font><font color="#007700">);<br /><br /></font><font color="#0000BB">$c </font><font color="#007700">= </font><font color="#0000BB">$b </font><font color="#007700">+ </font><font color="#0000BB">$a</font><font color="#007700">; </font><font color="#FF8000">// União de $b e $a<br /></font><font color="#007700">echo </font><font color="#DD0000">"União de \$b e \$a: \n"</font><font color="#007700">;<br /></font><font color="#0000BB">var_dump</font><font color="#007700">(</font><font color="#0000BB">$c</font><font color="#007700">);<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
><P
></P
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>
    Quando executado, o script produz uma saída assim:
    <TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><code><font color="#000000">
União de $a e $b:<br />array(3) {<br />&nbsp;&nbsp;["a"]=&gt;<br />&nbsp;&nbsp;string(5) "maçã"<br />&nbsp;&nbsp;["b"]=&gt;<br />&nbsp;&nbsp;string(6) "banana"<br />&nbsp;&nbsp;["c"]=&gt;<br />&nbsp;&nbsp;string(6) "morango"<br />}<br />União de $b e $a:<br />array(3) {<br />&nbsp;&nbsp;["a"]=&gt;<br />&nbsp;&nbsp;string(4) "pêra"<br />&nbsp;&nbsp;["b"]=&gt;<br />&nbsp;&nbsp;string(10) "framboesa"<br />&nbsp;&nbsp;["c"]=&gt;<br />&nbsp;&nbsp;string(6) "morango"<br />}</font>
</code></TD
></TR
></TABLE
>
   </P
><P
>&#13;    Elementos do array são iguais para efeitos de comparação se eles possuem o mesmo
    valor e chave.
   </P
><P
>&#13;    <TABLE
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CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
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></A
><P
><B
>Exemplo 15-2. Comparando arrays</B
></P
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><TR
><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$a </font><font color="#007700">= array(</font><font color="#DD0000">"maçã"</font><font color="#007700">, </font><font color="#DD0000">"banana"</font><font color="#007700">);<br /></font><font color="#0000BB">$b </font><font color="#007700">= array(</font><font color="#0000BB">1 </font><font color="#007700">=&gt; </font><font color="#DD0000">"banana"</font><font color="#007700">, </font><font color="#DD0000">"0" </font><font color="#007700">=&gt; </font><font color="#DD0000">"maçã"</font><font color="#007700">);<br /><br /></font><font color="#0000BB">var_dump</font><font color="#007700">(</font><font color="#0000BB">$a </font><font color="#007700">== </font><font color="#0000BB">$b</font><font color="#007700">); </font><font color="#FF8000">// bool(true)<br /></font><font color="#0000BB">var_dump</font><font color="#007700">(</font><font color="#0000BB">$a </font><font color="#007700">=== </font><font color="#0000BB">$b</font><font color="#007700">); </font><font color="#FF8000">// bool(false)<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
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>
   </P
><P
>&#13;    Veja também as seções do manual sobre o
    <A
HREF="language.types.array.html"
>tipo Array</A
> e
    <A
HREF="ref.array.html"
>funções de manipulação de Arrays</A
>.
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