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>mysqli_field_tell</TITLE
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>mysqli_field_tell</H1
><DIV
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><A
NAME="AEN134305"
></A
><P
> (PHP 5)</P
>mysqli_field_tell<P
> (no version information, might be only in CVS)</P
>result->current_field --
Obtém o índice do campo de um ponteiro de resultado
</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN134309"
></A
><H2
>Descrição</H2
><P
>Estilo de procedimento:</P
>int <B
CLASS="methodname"
>mysqli_field_tell</B
> ( object result )<BR
></BR
><P
>Estilo orientado a objeto (propriedade):</P
>class <B
CLASS="classname"
>result</B
> { <BR
></BR
>int current_field<BR
></BR
>}<P
>
Retorna a posição do cursor do campo usado para a última chamada a
<A
HREF="function.mysqli-fetch-field.html"
><B
CLASS="function"
>mysqli_fetch_field()</B
></A
>. Este valor pode ser usado
como argumento para <A
HREF="function.mysqli-field-seek.html"
><B
CLASS="function"
>mysqli_field_seek()</B
></A
>.
</P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN134328"
></A
><H2
>Valores de retornado</H2
><P
> Retorna o índice atual do cursor do campo.
</P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN134331"
></A
><H2
>Veja também</H2
><P
> <A
HREF="function.mysqli-fetch-field.html"
><B
CLASS="function"
>mysqli_fetch_field()</B
></A
>,
<A
HREF="function.mysqli-field-seek.html"
><B
CLASS="function"
>mysqli_field_seek()</B
></A
>
</P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN134336"
></A
><H2
>Exemplo</H2
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><P
><B
>Exemplo 1. Estilo orientado a objeto</B
></P
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><code><font color="#000000">
<font color="#0000BB"><?php<br />$mysqli </font><font color="#007700">= new </font><font color="#0000BB">mysqli</font><font color="#007700">(</font><font color="#DD0000">"localhost"</font><font color="#007700">, </font><font color="#DD0000">"my_user"</font><font color="#007700">, </font><font color="#DD0000">"my_password"</font><font color="#007700">, </font><font color="#DD0000">"world"</font><font color="#007700">);<br /><br /></font><font color="#FF8000">/* check connection */<br /></font><font color="#007700">if (</font><font color="#0000BB">mysqli_connect_errno</font><font color="#007700">()) {<br /> </font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Connect failed: %s\n"</font><font color="#007700">, </font><font color="#0000BB">mysqli_connect_error</font><font color="#007700">());<br /> exit();<br />}<br /><br /></font><font color="#0000BB">$query </font><font color="#007700">= </font><font color="#DD0000">"SELECT Name, SurfaceArea from Country ORDER BY Code LIMIT 5"</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">-></font><font color="#0000BB">query</font><font color="#007700">(</font><font color="#0000BB">$query</font><font color="#007700">)) {<br /><br /> </font><font color="#FF8000">/* Get field information for all columns */<br /> </font><font color="#007700">while (</font><font color="#0000BB">$finfo </font><font color="#007700">= </font><font color="#0000BB">$result</font><font color="#007700">-></font><font color="#0000BB">fetch_field</font><font color="#007700">()) {<br /><br /> </font><font color="#FF8000">/* get fieldpointer offset */<br /> </font><font color="#0000BB">$currentfield </font><font color="#007700">= </font><font color="#0000BB">$result</font><font color="#007700">-></font><font color="#0000BB">current_field</font><font color="#007700">;<br /><br /> </font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Column %d:\n"</font><font color="#007700">, </font><font color="#0000BB">$currentfield</font><font color="#007700">); <br /> </font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Name: %s\n"</font><font color="#007700">, </font><font color="#0000BB">$finfo</font><font color="#007700">-></font><font color="#0000BB">name</font><font color="#007700">);<br /> </font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Table: %s\n"</font><font color="#007700">, </font><font color="#0000BB">$finfo</font><font color="#007700">-></font><font color="#0000BB">table</font><font color="#007700">);<br /> </font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"max. Len: %d\n"</font><font color="#007700">, </font><font color="#0000BB">$finfo</font><font color="#007700">-></font><font color="#0000BB">max_length</font><font color="#007700">);<br /> </font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Flags: %d\n"</font><font color="#007700">, </font><font color="#0000BB">$finfo</font><font color="#007700">-></font><font color="#0000BB">flags</font><font color="#007700">);<br /> </font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Type: %d\n\n"</font><font color="#007700">, </font><font color="#0000BB">$finfo</font><font color="#007700">-></font><font color="#0000BB">type</font><font color="#007700">);<br /> } <br /> </font><font color="#0000BB">$result</font><font color="#007700">-></font><font color="#0000BB">close</font><font color="#007700">();<br />}<br /><br /></font><font color="#FF8000">/* close connection */<br /></font><font color="#0000BB">$mysqli</font><font color="#007700">-></font><font color="#0000BB">close</font><font color="#007700">();<br /></font><font color="#0000BB">?></font>
</font>
</code></TD
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><P
><B
>Exemplo 2. Estilo de procedimento</B
></P
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><code><font color="#000000">
<font color="#0000BB"><?php<br />$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 /> </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 /> exit();<br />}<br /><br /></font><font color="#0000BB">$query </font><font color="#007700">= </font><font color="#DD0000">"SELECT Name, SurfaceArea from Country ORDER BY Code LIMIT 5"</font><font color="#007700">;<br /><br />if (</font><font color="#0000BB">$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 /> </font><font color="#FF8000">/* Get field information for all fields */<br /> </font><font color="#007700">while (</font><font color="#0000BB">$finfo </font><font color="#007700">= </font><font color="#0000BB">mysqli_fetch_field</font><font color="#007700">(</font><font color="#0000BB">$result</font><font color="#007700">)) {<br /> <br /> </font><font color="#FF8000">/* get fieldpointer offset */<br /> </font><font color="#0000BB">$currentfield </font><font color="#007700">= </font><font color="#0000BB">mysqli_field_tell</font><font color="#007700">(</font><font color="#0000BB">$result</font><font color="#007700">);<br /><br /> </font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Column %d:\n"</font><font color="#007700">, </font><font color="#0000BB">$currentfield</font><font color="#007700">); <br /> </font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Name: %s\n"</font><font color="#007700">, </font><font color="#0000BB">$finfo</font><font color="#007700">-></font><font color="#0000BB">name</font><font color="#007700">);<br /> </font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Table: %s\n"</font><font color="#007700">, </font><font color="#0000BB">$finfo</font><font color="#007700">-></font><font color="#0000BB">table</font><font color="#007700">);<br /> </font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"max. Len: %d\n"</font><font color="#007700">, </font><font color="#0000BB">$finfo</font><font color="#007700">-></font><font color="#0000BB">max_length</font><font color="#007700">);<br /> </font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Flags: %d\n"</font><font color="#007700">, </font><font color="#0000BB">$finfo</font><font color="#007700">-></font><font color="#0000BB">flags</font><font color="#007700">);<br /> </font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Type: %d\n\n"</font><font color="#007700">, </font><font color="#0000BB">$finfo</font><font color="#007700">-></font><font color="#0000BB">type</font><font color="#007700">);<br /> }<br /> </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">?></font>
</font>
</code></TD
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></DIV
></TD
></TR
></TABLE
><P
> Os exemplos acima devem produzir a seguinte saída:
</P
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><PRE
CLASS="screen"
>Column 1:
Name: Name
Table: Country
max. Len: 11
Flags: 1
Type: 254
Column 2:
Name: SurfaceArea
Table: Country
max. Len: 10
Flags: 32769
Type: 4</PRE
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><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="function.mysqli-field-seek.html"
ACCESSKEY="P"
>Anterior</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="index.html"
ACCESSKEY="H"
>Principal</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="function.mysqli-free-result.html"
ACCESSKEY="N"
>Próxima</A
></TD
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><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>mysqli_field_seek</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="ref.mysqli.html"
ACCESSKEY="U"
>Acima</A
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VALIGN="top"
>mysqli_free_result</TD
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