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

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>fwrite</H1
><DIV
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NAME="AEN49774"
></A
><P
>    (PHP 3, PHP 4, PHP 5)</P
>fwrite&nbsp;--&nbsp;Gravação em arquivos binary-safe</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN49777"
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><H2
>Descrição</H2
>int <B
CLASS="methodname"
>fwrite</B
> ( resource handle, string string [, int comprimento] )<BR
></BR
><P
>&#13;     <B
CLASS="function"
>fwrite()</B
> grava os conteúdos de
     <CODE
CLASS="parameter"
>string</CODE
> para o stream de arquivo apontado
     por <CODE
CLASS="parameter"
>handle</CODE
>. Se o argumento
     <CODE
CLASS="parameter"
>comprimento</CODE
> é dado, a gravação irá parar
     depois de que <CODE
CLASS="parameter"
>comprimento</CODE
> bytes foram
     escritos ou o fim da <CODE
CLASS="parameter"
>string</CODE
> é alcançada,
     o que ocorrer primeiro.
    </P
><P
>&#13;     <B
CLASS="function"
>fwrite()</B
> retorna o número de bytes
     gravados, ou <TT
CLASS="constant"
><B
>FALSE</B
></TT
> em caso de erro.
    </P
><P
>&#13;     Note que se o argumento <CODE
CLASS="parameter"
>comprimento</CODE
> é dado,
     então a opção de configuração <A
HREF="ref.info.html#ini.magic-quotes-runtime"
>magic_quotes_runtime</A
>
     será ignorada e nenhuma barra será retirada do
     <CODE
CLASS="parameter"
>string</CODE
>.
    </P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Nota: </B
>
      Em sistemas que diferenciam entre arquivos binários e texto
      (por exemplo Windows) o arquivo tem que ser aberto com 'b'
      incluído no parametro mode do <A
HREF="function.fopen.html"
><B
CLASS="function"
>fopen()</B
></A
>.
     </P
></BLOCKQUOTE
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><A
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><P
><B
>Exemplo 1. Exemplo fwrite</B
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><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$filename </font><font color="#007700">= </font><font color="#DD0000">'teste.txt'</font><font color="#007700">;<br /></font><font color="#0000BB">$somecontent </font><font color="#007700">= </font><font color="#DD0000">"Acrescentando isto no arquivo\n"</font><font color="#007700">;<br /><br /></font><font color="#FF8000">// Tendo certeza que o arquivo existe e que há permissão de escrita primeiro.<br /></font><font color="#007700">if (</font><font color="#0000BB">is_writable</font><font color="#007700">(</font><font color="#0000BB">$filename</font><font color="#007700">)) {<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#FF8000">// Em nosso exemplo, nós estamos abrindo $filename em modo de append (acréscimo).<br />&nbsp;&nbsp;&nbsp;&nbsp;// O ponteiro do arquivo estará no final dele desde<br />&nbsp;&nbsp;&nbsp;&nbsp;// que será aqui que $somecontent será escrito com fwrite().<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#007700">if (!</font><font color="#0000BB">$handle </font><font color="#007700">= </font><font color="#0000BB">fopen</font><font color="#007700">(</font><font color="#0000BB">$filename</font><font color="#007700">, </font><font color="#DD0000">'a'</font><font color="#007700">)) {<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;print </font><font color="#DD0000">"Erro abrindo arquivo ($filename)"</font><font color="#007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;exit;<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#FF8000">// Escrevendo $somecontent para o arquivo aberto.<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#007700">if (!</font><font color="#0000BB">fwrite</font><font color="#007700">(</font><font color="#0000BB">$handle</font><font color="#007700">, </font><font color="#0000BB">$somecontent</font><font color="#007700">)) {<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;print </font><font color="#DD0000">"Erro escrevendo no arquivo ($filename)"</font><font color="#007700">;<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;exit;<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;print </font><font color="#DD0000">"Sucesso: escrito ($somecontent) no arquivo ($filename)"</font><font color="#007700">;<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">fclose</font><font color="#007700">($);<br /><br />} else {<br />&nbsp;&nbsp;&nbsp;&nbsp;print </font><font color="#DD0000">"The file $filename is not writable"</font><font color="#007700">;<br />}<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
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    </P
><P
>&#13;     Veja também <A
HREF="function.fread.html"
><B
CLASS="function"
>fread()</B
></A
>, <A
HREF="function.fopen.html"
><B
CLASS="function"
>fopen()</B
></A
>,
     <A
HREF="function.fsockopen.html"
><B
CLASS="function"
>fsockopen()</B
></A
>, <A
HREF="function.popen.html"
><B
CLASS="function"
>popen()</B
></A
> e
     <A
HREF="function.fputs.html"
><B
CLASS="function"
>fputs()</B
></A
>.
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