<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >fbsql_fetch_field</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REL="HOME" TITLE="Manual do PHP" HREF="index.html"><LINK REL="UP" TITLE="FrontBase Functions" HREF="ref.fbsql.html"><LINK REL="PREVIOUS" TITLE="fbsql_fetch_assoc" HREF="function.fbsql-fetch-assoc.html"><LINK REL="NEXT" TITLE="fbsql_fetch_lengths" HREF="function.fbsql-fetch-lengths.html"><META HTTP-EQUIV="Content-type" CONTENT="text/html; charset=UTF-8"></HEAD ><BODY CLASS="refentry" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >Manual do PHP</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="function.fbsql-fetch-assoc.html" ACCESSKEY="P" >Anterior</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.fbsql-fetch-lengths.html" ACCESSKEY="N" >Próxima</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.fbsql-fetch-field" ></A >fbsql_fetch_field</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN54984" ></A ><P > (PHP 4 >= 4.0.6, PHP 5)</P >fbsql_fetch_field -- Get column information from a result and return as an object</DIV ><DIV CLASS="refsect1" ><A NAME="AEN54987" ></A ><H2 >Descrição</H2 >object <B CLASS="methodname" >fbsql_fetch_field</B > ( resource result [, int field_offset] )<BR ></BR ><P > Used in order to obtain information about fields in a certain query result. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN54999" ></A ><H2 >Parâmetros</H2 ><P > <P ></P ><DIV CLASS="variablelist" ><DL ><DT ><CODE CLASS="parameter" > result</CODE ></DT ><DD ><P >Um identificador de resultado retornado por <A HREF="function.fbsql-query.html" ><B CLASS="function" >fbsql_query()</B ></A > ou <A HREF="function.fbsql-db-query.html" ><B CLASS="function" >fbsql_db_query()</B ></A >.</P ></DD ><DT ><CODE CLASS="parameter" >field_offset</CODE ></DT ><DD ><P > The numerical offset of the field. The field index starts at 0. If not specified, the next field that wasn't yet retrieved by <B CLASS="function" >fbsql_fetch_field()</B > is retrieved. </P ></DD ></DL ></DIV > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN55016" ></A ><H2 >Valores de retornado</H2 ><P > Returns an object containing field information, or <TT CLASS="constant" ><B >FALSE</B ></TT > on errors. </P ><P > The properties of the object are: <P ></P ><UL ><LI ><P > name - column name </P ></LI ><LI ><P > table - name of the table the column belongs to </P ></LI ><LI ><P > max_length - maximum length of the column </P ></LI ><LI ><P > not_null - 1 if the column cannot be <TT CLASS="constant" ><B >NULL</B ></TT > </P ></LI ><LI ><P > type - the type of the column </P ></LI ></UL > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN55033" ></A ><H2 >Exemplos</H2 ><P > <TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN55036" ></A ><P ><B >Exemplo 1. <B CLASS="function" >fbsql_fetch_field()</B > example</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br />fbsql_connect</font><font color="#007700">(</font><font color="#0000BB">$host</font><font color="#007700">, </font><font color="#0000BB">$user</font><font color="#007700">, </font><font color="#0000BB">$password</font><font color="#007700">)<br /> or die(</font><font color="#DD0000">"Could not connect"</font><font color="#007700">);<br /></font><font color="#0000BB">$result </font><font color="#007700">= </font><font color="#0000BB">fbsql_db_query</font><font color="#007700">(</font><font color="#DD0000">"database"</font><font color="#007700">, </font><font color="#DD0000">"select * from table"</font><font color="#007700">)<br /> or die(</font><font color="#DD0000">"Query failed"</font><font color="#007700">);<br /></font><font color="#FF8000"># get column metadata<br /></font><font color="#0000BB">$i </font><font color="#007700">= </font><font color="#0000BB">0</font><font color="#007700">;<br />while (</font><font color="#0000BB">$i </font><font color="#007700">< </font><font color="#0000BB">fbsql_num_fields</font><font color="#007700">(</font><font color="#0000BB">$result</font><font color="#007700">)) {<br /> echo </font><font color="#DD0000">"Information for column $i:<br /></font><font color="#007700">\n</font><font color="#DD0000">"</font><font color="#007700">;<br /> </font><font color="#0000BB">$meta </font><font color="#007700">= </font><font color="#0000BB">fbsql_fetch_field</font><font color="#007700">(</font><font color="#0000BB">$result</font><font color="#007700">);<br /> if (!</font><font color="#0000BB">$meta</font><font color="#007700">) {<br /> echo </font><font color="#DD0000">"No information available<br />\n"</font><font color="#007700">;<br /> }<br /> echo </font><font color="#DD0000">"<pre><br />max_length: $meta</font><font color="#007700">-></font><font color="#DD0000">max_length<br />name: $meta</font><font color="#007700">-></font><font color="#DD0000">name<br />not_null: $meta</font><font color="#007700">-></font><font color="#DD0000">not_null<br />table: $meta</font><font color="#007700">-></font><font color="#DD0000">table<br />type: $meta</font><font color="#007700">-></font><font color="#DD0000">type<br /></pre>"</font><font color="#007700">;<br /> </font><font color="#0000BB">$i</font><font color="#007700">++;<br />}<br /></font><font color="#0000BB">fbsql_free_result</font><font color="#007700">(</font><font color="#0000BB">$result</font><font color="#007700">);<br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN55040" ></A ><H2 >Veja também</H2 ><P > <P ></P ><TABLE BORDER="0" ><TBODY ><TR ><TD ><A HREF="function.fbsql-field-seek.html" ><B CLASS="function" >fbsql_field_seek()</B ></A ></TD ></TR ></TBODY ></TABLE ><P ></P > </P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="function.fbsql-fetch-assoc.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.fbsql-fetch-lengths.html" ACCESSKEY="N" >Próxima</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >fbsql_fetch_assoc</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.fbsql.html" ACCESSKEY="U" >Acima</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >fbsql_fetch_lengths</TD ></TR ></TABLE ></DIV ></BODY ></HTML >