Sophie: php-manual-pt_BR-5.2.4-1mdv2008.1 noarch

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

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>file_exists</H1
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><P
>    (PHP 3, PHP 4, PHP 5)</P
>file_exists&nbsp;--&nbsp;Checa se um arquivo ou diretório existe</DIV
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NAME="AEN48704"
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><H2
>Descrição</H2
>bool <B
CLASS="methodname"
>file_exists</B
> ( string nomedoarquivo )<BR
></BR
><P
>&#13;     Retorna <TT
CLASS="constant"
><B
>TRUE</B
></TT
> se o arquivo ou diretório expecificado por
     <CODE
CLASS="parameter"
>nomedoarquivo</CODE
> existe; <TT
CLASS="constant"
><B
>FALSE</B
></TT
> caso contrário.
    </P
><P
>&#13;     No Windows, use <TT
CLASS="filename"
>//computername/share/filename</TT
> ou
     <TT
CLASS="filename"
>\\\\computername\share\filename</TT
> para checar arquivos em
     compartilhamentos de rede.
    </P
><P
>&#13;     <TABLE
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><P
><B
>Exemplo 1. Testando se um arquivo existe</B
></P
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><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$filename </font><font color="#007700">= </font><font color="#DD0000">'/caminho/para/qualquer.txt'</font><font color="#007700">;<br /><br />if (</font><font color="#0000BB">file_exists</font><font color="#007700">(</font><font color="#0000BB">$filename</font><font color="#007700">)) {<br />&nbsp;&nbsp;&nbsp;&nbsp;print </font><font color="#DD0000">"O arquivo $filename existe"</font><font color="#007700">;<br />} else {<br />&nbsp;&nbsp;&nbsp;&nbsp;print </font><font color="#DD0000">"O arquivo $filename não existe"</font><font color="#007700">;<br />}<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
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>
    </P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Nota: </B
>O resultado desta
 função é cacheada. Veja <A
HREF="function.clearstatcache.html"
><B
CLASS="function"
>clearstatcache()</B
></A
> para
 mais detalhes.</P
></BLOCKQUOTE
></DIV
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Nota: </B
>Esta função não trabalha com
 <A
HREF="features.remote-files.html"
>arquivos remotos</A
>, de forma que o arquivo
 a ser examinado precisa ser acessível pelo sistema de arquivos do servidor.</P
></BLOCKQUOTE
></DIV
><P
>&#13;     Veja também <A
HREF="function.is-readable.html"
><B
CLASS="function"
>is_readable()</B
></A
>, <A
HREF="function.is-writable.html"
><B
CLASS="function"
>is_writable()</B
></A
>,
     <A
HREF="function.is-file.html"
><B
CLASS="function"
>is_file()</B
></A
> e <A
HREF="function.file.html"
><B
CLASS="function"
>file()</B
></A
>.
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