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>interface_exists</H1
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><P
> (PHP 5 >= 5.0.2)</P
>interface_exists -- Checa se a interface foi definida</DIV
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>Descrição</H2
>bool <B
CLASS="methodname"
>interface_exists</B
> ( string interface_name [, bool autoload] )<BR
></BR
><P
> Essa função retorna <TT
CLASS="constant"
><B
>TRUE</B
></TT
> se a interface de nome
<CODE
CLASS="parameter"
>interface_name</CODE
> já foi definida,
<TT
CLASS="constant"
><B
>FALSE</B
></TT
> caso contrário.
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><B
>Exemplo 1. Exemplo de <B
CLASS="function"
>interface_exists()</B
></B
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><code><font color="#000000">
<font color="#0000BB"><?php<br /></font><font color="#FF8000">// Check the interface exists before trying to use it<br /></font><font color="#007700">if (</font><font color="#0000BB">interface_exists</font><font color="#007700">(</font><font color="#DD0000">'MyInterface'</font><font color="#007700">)) {<br /> class </font><font color="#0000BB">MyClass implements MyInterface<br /> </font><font color="#007700">{<br /> </font><font color="#FF8000">// Methods<br /> </font><font color="#007700">}<br />}<br /><br /></font><font color="#0000BB">?></font>
</font>
</code></TD
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</P
><P
> <B
CLASS="function"
>interface_exists()</B
> tentará chamar <A
HREF="language.oop5.autoload.html"
>__autoload</A
> por
padrão, se você não quiser que <B
CLASS="function"
>interface_exists()</B
>
chame <A
HREF="language.oop5.autoload.html"
>__autoload</A
>, você pode configura o parâmetro <CODE
CLASS="parameter"
>autoload</CODE
>
para <TT
CLASS="constant"
><B
>FALSE</B
></TT
>.
</P
><P
> Veja também <A
HREF="function.class-exists.html"
><B
CLASS="function"
>class_exists()</B
></A
>.
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