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>in_array</H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN12637"
></A
><P
> (PHP 4, PHP 5)</P
>in_array -- Checa se um valor existe em um array</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN12640"
></A
><H2
>Descrição</H2
>bool <B
CLASS="methodname"
>in_array</B
> ( mixed needle, array haystack [, bool strict] )<BR
></BR
><P
> Procura em <CODE
CLASS="parameter"
>haystack</CODE
> pelo valor
<CODE
CLASS="parameter"
>needle</CODE
> e retorna <TT
CLASS="constant"
><B
>TRUE</B
></TT
>
se este valor for encontrado no array, e <TT
CLASS="constant"
><B
>FALSE</B
></TT
> em caso contrário.
</P
><P
> Se o terceiro parâmetro <CODE
CLASS="parameter"
>strict</CODE
> for
<TT
CLASS="constant"
><B
>TRUE</B
></TT
> então <B
CLASS="function"
>in_array()</B
>
também irá checar os <A
HREF="language.types.html"
>tipos</A
> de
<CODE
CLASS="parameter"
>needle</CODE
> em <CODE
CLASS="parameter"
>haystack</CODE
>.
</P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Nota: </B
>
Se <CODE
CLASS="parameter"
>needle</CODE
> for uma string, a comparação é feita
diferenciando caracteres maiúsculos e minúsculos.
</P
></BLOCKQUOTE
></DIV
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Nota: </B
>
Em versões do PHP mais antigas que 4.2.0 <CODE
CLASS="parameter"
>needle</CODE
>
não pode ser um array.
</P
></BLOCKQUOTE
></DIV
><P
> <TABLE
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><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN12673"
></A
><P
><B
>Exemplo 1. Exemplo de <B
CLASS="function"
>in_array()</B
></B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><code><font color="#000000">
<font color="#0000BB"><?php<br />$os </font><font color="#007700">= array(</font><font color="#DD0000">"Mac"</font><font color="#007700">, </font><font color="#DD0000">"NT"</font><font color="#007700">, </font><font color="#DD0000">"Irix"</font><font color="#007700">, </font><font color="#DD0000">"Linux"</font><font color="#007700">); <br />if (</font><font color="#0000BB">in_array</font><font color="#007700">(</font><font color="#DD0000">"Irix"</font><font color="#007700">, </font><font color="#0000BB">$os</font><font color="#007700">)) { <br /> print </font><font color="#DD0000">"Tem Irix"</font><font color="#007700">;<br />}<br />if (</font><font color="#0000BB">in_array</font><font color="#007700">(</font><font color="#DD0000">"mac"</font><font color="#007700">, </font><font color="#0000BB">$os</font><font color="#007700">)) { <br /> print </font><font color="#DD0000">"Tem mac"</font><font color="#007700">;<br />}<br /></font><font color="#0000BB">?></font>
</font>
</code></TD
></TR
></TABLE
><P
> A segunda condicional falha pois <B
CLASS="function"
>in_array()</B
>
diferencia letras minúsculas e maiúsculas. Então, a saída seria:
</P
><TABLE
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BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><PRE
CLASS="screen"
>Got Irix</PRE
></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
</P
><P
> <TABLE
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN12681"
></A
><P
><B
>Exemplo 2. <B
CLASS="function"
>in_array()</B
> com checagem de tipos</B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><code><font color="#000000">
<font color="#0000BB"><?php<br />$a </font><font color="#007700">= array(</font><font color="#DD0000">'1.10'</font><font color="#007700">, </font><font color="#0000BB">12.4</font><font color="#007700">, </font><font color="#0000BB">1.13</font><font color="#007700">);<br /><br />if (</font><font color="#0000BB">in_array</font><font color="#007700">(</font><font color="#DD0000">'12.4'</font><font color="#007700">, </font><font color="#0000BB">$a</font><font color="#007700">, </font><font color="#0000BB">TRUE</font><font color="#007700">)) {<br /> echo </font><font color="#DD0000">"'12.4' encontrado com checagem de tipo\n"</font><font color="#007700">;<br />}<br />if (</font><font color="#0000BB">in_array</font><font color="#007700">(</font><font color="#0000BB">1.13</font><font color="#007700">, </font><font color="#0000BB">$a</font><font color="#007700">, </font><font color="#0000BB">TRUE</font><font color="#007700">)) {<br /> echo </font><font color="#DD0000">"1.13 encontrado com checagem de tipo\n"</font><font color="#007700">;<br />}<br /></font><font color="#0000BB">?></font>
</font>
</code></TD
></TR
></TABLE
><P
> A saída seria:
</P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><PRE
CLASS="screen"
>1.13 encontrado com checagem de tipo</PRE
></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
</P
><P
> <TABLE
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BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN12688"
></A
><P
><B
>Exemplo 3. Exemplo de <B
CLASS="function"
>in_array()</B
> passando um array para <CODE
CLASS="parameter"
>needle</CODE
></B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><code><font color="#000000">
<font color="#0000BB"><?php<br />$a </font><font color="#007700">= array(array(</font><font color="#DD0000">'p'</font><font color="#007700">, </font><font color="#DD0000">'h'</font><font color="#007700">), array(</font><font color="#DD0000">'p'</font><font color="#007700">, </font><font color="#DD0000">'r'</font><font color="#007700">), </font><font color="#DD0000">'o'</font><font color="#007700">);<br /><br />if (</font><font color="#0000BB">in_array</font><font color="#007700">(array(</font><font color="#DD0000">'p'</font><font color="#007700">, </font><font color="#DD0000">'h'</font><font color="#007700">), </font><font color="#0000BB">$a</font><font color="#007700">)) {<br /> echo </font><font color="#DD0000">"'ph' foi encontrado\n"</font><font color="#007700">;<br /> }<br />if (</font><font color="#0000BB">in_array</font><font color="#007700">(array(</font><font color="#DD0000">'f'</font><font color="#007700">, </font><font color="#DD0000">'i'</font><font color="#007700">), </font><font color="#0000BB">$a</font><font color="#007700">)) { <br /> echo </font><font color="#DD0000">"'fi' foi encontrado\n"</font><font color="#007700">;<br /> }<br />if (</font><font color="#0000BB">in_array</font><font color="#007700">(</font><font color="#DD0000">'o'</font><font color="#007700">, </font><font color="#0000BB">$a</font><font color="#007700">)) {<br /> echo </font><font color="#DD0000">"'o' foi encontrado\n"</font><font color="#007700">;<br /> }<br /> </font><font color="#FF8000">/* Outputs: <br /> 'ph' was found <br /> 'o' was found <br /> */<br /></font><font color="#0000BB">?></font>
</font>
</code></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
</P
><P
> Veja também <A
HREF="function.array-search.html"
><B
CLASS="function"
>array_search()</B
></A
>,
<A
HREF="function.array-key-exists.html"
><B
CLASS="function"
>array_key_exists()</B
></A
> e
<A
HREF="function.isset.html"
><B
CLASS="function"
>isset()</B
></A
>.
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