<HTML ><HEAD ><TITLE >fbsql_fetch_field</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK REL="HOME" TITLE="Manual de 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=ISO-8859-1"></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 de 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" >Siguiente</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="AEN17826" ></A ><P > (PHP 4 >= 4.0.6)</P >fbsql_fetch_field -- Get column information from a result and return as an object </DIV ><DIV CLASS="refsect1" ><A NAME="AEN17829" ></A ><H2 >Description</H2 >object <B CLASS="methodname" >fbsql_fetch_field</B > ( resource result [, int field_offset])<BR ></BR ><P > Returns an object containing field information. </P ><P > <B CLASS="function" >fbsql_fetch_field()</B > can be used in order to obtain information about fields in a certain query result. If the field offset isn't specified, the next field that wasn't yet retrieved by <B CLASS="function" >fbsql_fetch_field()</B > is retrieved. </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 ><TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN17857" ></A ><P ><B >Ejemplo 1. <B CLASS="function" >fbsql_fetch_field()</B > example</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><PRE CLASS="php" ><?php fbsql_connect ($host, $user, $password) or die ("Could not connect"); $result = fbsql_db_query ("database", "select * from table") or die ("Query failed"); # get column metadata $i = 0; while ($i < fbsql_num_fields ($result)) { echo "Information for column $i:<BR>\n"; $meta = fbsql_fetch_field ($result); if (!$meta) { echo "No information available<BR>\n"; } echo "<PRE> max_length: $meta->max_length name: $meta->name not_null: $meta->not_null table: $meta->table type: $meta->type </PRE>"; $i++; } fbsql_free_result ($result); ?></PRE ></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE ><P > See also <A HREF="function.fbsql-field-seek.html" ><B CLASS="function" >fbsql_field_seek()</B ></A >. </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" >Inicio</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="function.fbsql-fetch-lengths.html" ACCESSKEY="N" >Siguiente</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" >Subir</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >fbsql_fetch_lengths</TD ></TR ></TABLE ></DIV ></BODY ></HTML >