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>mysqli_fetch_field</H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN133893"
></A
><P
> (PHP 5)</P
>mysqli_fetch_field<P
> (no version information, might be only in CVS)</P
>result->fetch_field -- Retorna o próximo campo no conjunto de resultados</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN133897"
></A
><H2
>Descrição</H2
><P
>Estilo de procedimento:</P
>mixed <B
CLASS="methodname"
>mysqli_fetch_field</B
> ( object result )<BR
></BR
><P
>Estilo orientado a objeto (metodo):</P
>class <B
CLASS="classname"
>result</B
> { <BR
></BR
>mixed <B
CLASS="methodname"
>fetch_field</B
> ( void )<BR
></BR
>}<P
> A função <B
CLASS="function"
>mysqli_fetch_field()</B
> retorna a definição de uma coluna do
conjunto de resultados como um objeto. Utilize esta função repetidamente para obter
sobre todas as colunas no conjunto de resultados.
<B
CLASS="function"
>mysqli_fetch_field()</B
> retorna <TT
CLASS="constant"
><B
>FALSE</B
></TT
> quando não houverem
mais campos.
</P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN133918"
></A
><H2
>Valores de retorno</H2
><P
> Retorna um objeto o qual contém informações sobre a definição do campoou <TT
CLASS="constant"
><B
>FALSE</B
></TT
> se não houver
informação sobre campos disponível.
</P
><P
> <DIV
CLASS="table"
><A
NAME="AEN133923"
></A
><P
><B
>Tabela 1. Propriedades do objeto</B
></P
><TABLE
BORDER="1"
CLASS="CALSTABLE"
><COL><COL><THEAD
><TR
><TH
>Propriedade</TH
><TH
>Descrição</TH
></TR
></THEAD
><TBODY
><TR
><TD
>name</TD
><TD
>O nome da coluna</TD
></TR
><TR
><TD
>orgname</TD
><TD
>Nome original da coluna se foi especificado um alias</TD
></TR
><TR
><TD
>table</TD
><TD
>O nome da tabela a qual este campo pertence (se não for calculada)</TD
></TR
><TR
><TD
>orgtable</TD
><TD
>Nome da tabela original se foi especificado um alias</TD
></TR
><TR
><TD
>def</TD
><TD
>O valor padrão para este campo, representando como uma string</TD
></TR
><TR
><TD
>max_length</TD
><TD
>O tamanho máximo do campo no conjunto de resultados.</TD
></TR
><TR
><TD
>flags</TD
><TD
>Um inteiro representando bit-flags para o campo.</TD
></TR
><TR
><TD
>type</TD
><TD
>O tipo de dados usado para este campo</TD
></TR
><TR
><TD
>decimals</TD
><TD
>O número de decimais usados (par campos integer)</TD
></TR
></TBODY
></TABLE
></DIV
>
</P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN133958"
></A
><H2
>Veja também</H2
><P
> <A
HREF="function.mysqli-num-fields.html"
><B
CLASS="function"
>mysqli_num_fields()</B
></A
>,
<A
HREF="function.mysqli-fetch-field-direct.html"
><B
CLASS="function"
>mysqli_fetch_field_direct()</B
></A
>,
<A
HREF="function.mysqli-fetch-fields.html"
><B
CLASS="function"
>mysqli_fetch_fields()</B
></A
>,
<A
HREF="function.mysqli-field-seek.html"
><B
CLASS="function"
>mysqli_field_seek()</B
></A
>.
</P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN133965"
></A
><H2
>Exemplo</H2
><TABLE
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CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN133967"
></A
><P
><B
>Exemplo 1. Estilo orientado a objeto</B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><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">$result</font><font color="#007700">-></font><font color="#0000BB">fetch_field</font><font color="#007700">()) {<br /> <br /> </font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Name: %s\n"</font><font color="#007700">, </font><font color="#0000BB">$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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></TD
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CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN133970"
></A
><P
><B
>Exemplo 2. Estilo de procedimento</B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><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">$result</font><font color="#007700">)) {<br /> <br /> </font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Name: %s\n"</font><font color="#007700">, </font><font color="#0000BB">$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
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
><P
> Os exemplos acima devem produzir a seguinte saída:
</P
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><TR
><TD
><PRE
CLASS="screen"
>Name: Name
Table: Country
max. Len: 11
Flags: 1
Type: 254
Name: SurfaceArea
Table: Country
max. Len: 10
Flags: 32769
Type: 4</PRE
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>Anterior</A
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>Principal</A
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>mysqli_fetch_field_direct</TD
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>mysqli_fetch_fields</TD
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