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

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>mysqli_fetch_lengths</H1
><DIV
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><A
NAME="AEN134056"
></A
><P
>    (PHP 5)</P
>mysqli_fetch_lengths<P
>    (no version information, might be only in CVS)</P
>result-&#62;lengths&nbsp;--&nbsp;Retorna os tamanhos das colunas na linha atual no conjunto de resultados</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN134060"
></A
><H2
>Descrição</H2
><P
>Estilo de procedimento:</P
>mixed <B
CLASS="methodname"
>mysqli_fetch_lengths</B
> ( object result )<BR
></BR
><P
>Estilo orientado a objeto (propriedade):</P
>class <B
CLASS="classname"
>result</B
> { <BR
></BR
>mixed lengths<BR
></BR
>}<P
>&#13;     A função <B
CLASS="function"
>mysqli_fetch_lengths()</B
> retorna uma matriz contendo os
     tamanhos de todas as colunas para a linha atual no conjunto de resultados representado pelo
     parâmetro <CODE
CLASS="parameter"
>result</CODE
>. Se for bem sucedida, uma matriz indexada numericamente
     representando os tamanhos de cada coluna é retorna ou <TT
CLASS="constant"
><B
>FALSE</B
></TT
> em caso de falha.
    </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN134080"
></A
><H2
>Valores de retorno</H2
><P
>&#13;     Uma amtriz de inteiros representando o tamanho de cada coluna(não incluindo
     quaisquer caracteres nulos que indicam o final). <TT
CLASS="constant"
><B
>FALSE</B
></TT
> se houver um erro. 
    </P
><P
>&#13;     <B
CLASS="function"
>mysqli_fetch_lengths()</B
> é válida apenas para a linha atual do conjunto de resultados. 
     Ela retorna <TT
CLASS="constant"
><B
>FALSE</B
></TT
> se focê utiliza-la antes de usar mysqli_fetch_row/array/object ou após obter
     todas as linhas do conjunto de resultados. 
    </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN134087"
></A
><H2
>Exemplo</H2
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NAME="AEN134089"
></A
><P
><B
>Exemplo 1. Estilo orientado a objetos</B
></P
><TABLE
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><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$mysqli </font><font color="#007700">= new </font><font color="#0000BB">mysqli</font><font color="#007700">(</font><font color="#DD0000">"localhost"</font><font color="#007700">, </font><font color="#DD0000">"my_user"</font><font color="#007700">, </font><font color="#DD0000">"my_password"</font><font color="#007700">, </font><font color="#DD0000">"world"</font><font color="#007700">);<br /><br /></font><font color="#FF8000">/* check connection */<br /></font><font color="#007700">if (</font><font color="#0000BB">mysqli_connect_errno</font><font color="#007700">()) {<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Connect failed: %s\n"</font><font color="#007700">, </font><font color="#0000BB">mysqli_connect_error</font><font color="#007700">());<br />&nbsp;&nbsp;&nbsp;&nbsp;exit();<br />}<br /><br /></font><font color="#0000BB">$query </font><font color="#007700">= </font><font color="#DD0000">"SELECT * from Country ORDER BY Code LIMIT 1"</font><font color="#007700">;<br /><br />if (</font><font color="#0000BB">$result </font><font color="#007700">= </font><font color="#0000BB">$mysqli</font><font color="#007700">-&gt;</font><font color="#0000BB">query</font><font color="#007700">(</font><font color="#0000BB">$query</font><font color="#007700">)) {<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">$row </font><font color="#007700">= </font><font color="#0000BB">$result</font><font color="#007700">-&gt;</font><font color="#0000BB">fetch_row</font><font color="#007700">();<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#FF8000">/* display column lengths */<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#007700">for (</font><font color="#0000BB">$i</font><font color="#007700">=</font><font color="#0000BB">0</font><font color="#007700">; </font><font color="#0000BB">$i </font><font color="#007700">&lt; </font><font color="#0000BB">count</font><font color="#007700">(</font><font color="#0000BB">$result</font><font color="#007700">-&gt;</font><font color="#0000BB">lengths</font><font color="#007700">); </font><font color="#0000BB">$i</font><font color="#007700">++) {<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Field %2d has Length %2d\n"</font><font color="#007700">, </font><font color="#0000BB">$i</font><font color="#007700">+</font><font color="#0000BB">1</font><font color="#007700">, </font><font color="#0000BB">$result</font><font color="#007700">-&gt;</font><font color="#0000BB">lengths</font><font color="#007700">[</font><font color="#0000BB">$i</font><font color="#007700">]);<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">$result</font><font color="#007700">-&gt;</font><font color="#0000BB">close</font><font color="#007700">();<br />}<br /><br /></font><font color="#FF8000">/* close connection */<br /></font><font color="#0000BB">$mysqli</font><font color="#007700">-&gt;</font><font color="#0000BB">close</font><font color="#007700">();<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
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><P
><B
>Exemplo 2. Estilo de procedimento</B
></P
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><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$link </font><font color="#007700">= </font><font color="#0000BB">mysqli_connect</font><font color="#007700">(</font><font color="#DD0000">"localhost"</font><font color="#007700">, </font><font color="#DD0000">"my_user"</font><font color="#007700">, </font><font color="#DD0000">"my_password"</font><font color="#007700">, </font><font color="#DD0000">"world"</font><font color="#007700">);<br /><br /></font><font color="#FF8000">/* check connection */<br /></font><font color="#007700">if (</font><font color="#0000BB">mysqli_connect_errno</font><font color="#007700">()) {<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Connect failed: %s\n"</font><font color="#007700">, </font><font color="#0000BB">mysqli_connect_error</font><font color="#007700">());<br />&nbsp;&nbsp;&nbsp;&nbsp;exit();<br />}<br /><br /></font><font color="#0000BB">$query </font><font color="#007700">= </font><font color="#DD0000">"SELECT * from Country ORDER BY Code LIMIT 1"</font><font color="#007700">;<br /><br />if (</font><font color="#0000BB">$result </font><font color="#007700">= </font><font color="#0000BB">mysqli_query</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">, </font><font color="#0000BB">$query</font><font color="#007700">)) {<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">$row </font><font color="#007700">= </font><font color="#0000BB">mysqli_fetch_row</font><font color="#007700">(</font><font color="#0000BB">$result</font><font color="#007700">);<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#FF8000">/* display column lengths */<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">$lengths </font><font color="#007700">= </font><font color="#0000BB">mysqli_fetch_lengths</font><font color="#007700">(</font><font color="#0000BB">$result</font><font color="#007700">);<br />&nbsp;&nbsp;&nbsp;&nbsp;for (</font><font color="#0000BB">$i</font><font color="#007700">=</font><font color="#0000BB">0</font><font color="#007700">; </font><font color="#0000BB">$i </font><font color="#007700">&lt; </font><font color="#0000BB">count</font><font color="#007700">(</font><font color="#0000BB">$lengths</font><font color="#007700">); </font><font color="#0000BB">$i</font><font color="#007700">++) {<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Field %2d has Length %2d\n"</font><font color="#007700">, </font><font color="#0000BB">$i</font><font color="#007700">+</font><font color="#0000BB">1</font><font color="#007700">, </font><font color="#0000BB">$lengths</font><font color="#007700">[</font><font color="#0000BB">$i</font><font color="#007700">]);<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">mysqli_free_result</font><font color="#007700">(</font><font color="#0000BB">$result</font><font color="#007700">);<br />}<br /><br /></font><font color="#FF8000">/* close connection */<br /></font><font color="#0000BB">mysqli_close</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">);<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
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><P
>&#13;     Os exemplos acima devem produzir a seguinte saída:
    </P
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><TR
><TD
><PRE
CLASS="screen"
>Field  1 has Length  3
Field  2 has Length  5
Field  3 has Length 13
Field  4 has Length  9
Field  5 has Length  6
Field  6 has Length  1
Field  7 has Length  6
Field  8 has Length  4
Field  9 has Length  6
Field 10 has Length  6
Field 11 has Length  5
Field 12 has Length 44
Field 13 has Length  7
Field 14 has Length  3
Field 15 has Length  2</PRE
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