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<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.3 $ -->
<refentry id="function.maxdb-fetch-field">
<refnamediv>
<refname>maxdb_fetch_field</refname>
<refname>result->fetch_field</refname>
<refpurpose>Returns the next field in the result set</refpurpose>
</refnamediv>
<refsect1>
<title>Description</title>
<para>Procedural style:</para>
<methodsynopsis>
<type>mixed</type><methodname>maxdb_fetch_field</methodname>
<methodparam><type>resource</type><parameter>result</parameter></methodparam>
</methodsynopsis>
<para>Object oriented style (method):</para>
<classsynopsis>
<ooclass><classname>result</classname></ooclass>
<methodsynopsis>
<type>mixed</type><methodname>fetch_field</methodname>
<void/>
</methodsynopsis>
</classsynopsis>
<para>
The <function>maxdb_fetch_field</function> returns the definition of one column
of a result set as an resource. Call this function repeatedly to retrieve
information about all columns in the result set.
<function>maxdb_fetch_field</function> returns &false; when no more fields
are left.
</para>
</refsect1>
<refsect1>
<title>Return values</title>
<para>
Returns an resource which contains field definition informations or &false; if no field information
is available.
</para>
<para>
<table>
<title>Object properties</title>
<tgroup cols='2'>
<thead>
<row>
<entry>Property</entry>
<entry>Description</entry>
</row>
</thead>
<tbody>
<row>
<entry>name</entry>
<entry>The name of the column</entry>
</row>
<row>
<entry>max_length</entry>
<entry>The maximum width of the field for the result set.</entry>
</row>
<row>
<entry>type</entry>
<entry>The data type used for this field</entry>
</row>
<row>
<entry>decimals</entry>
<entry>The number of decimals used (for integer fields)</entry>
</row>
</tbody>
</tgroup>
</table>
</para>
</refsect1>
<refsect1>
<title>See also</title>
<para>
<function>maxdb_num_fields</function>
<function>maxdb_fetch_field_direct</function>
<function>maxdb_fetch_fields</function>
<function>maxdb_field_seek</function>
</para>
</refsect1>
<refsect1>
<title>Example</title>
<example>
<title>Object oriented style</title>
<programlisting role="php">
<![CDATA[
<?php
$maxdb = new maxdb("localhost", "MONA", "RED", "DEMODB");
/* check connection */
if (maxdb_connect_errno()) {
printf("Connect failed: %s\n", maxdb_connect_error());
exit();
}
$query = "SELECT name, cno from hotel.customer ORDER BY cno";
if ($result = $maxdb->query($query)) {
/* Get field information for all columns */
while ($finfo = $result->fetch_field()) {
printf("Name: %s\n", $finfo->name);
printf("Table: %s\n", $finfo->table);
printf("max. Len: %d\n", $finfo->max_length);
printf("Flags: %d\n", $finfo->flags);
printf("Type: %d\n\n", $finfo->type);
}
$result->close();
}
/* close connection */
$maxdb->close();
?>
]]>
</programlisting>
</example>
<example>
<title>Procedural style</title>
<programlisting role="php">
<![CDATA[
<?php
$link = maxdb_connect("localhost", "MONA", "RED", "DEMODB");
/* check connection */
if (maxdb_connect_errno()) {
printf("Connect failed: %s\n", maxdb_connect_error());
exit();
}
$query = "SELECT name, cno from hotel.customer ORDER BY cno";
if ($result = maxdb_query($link, $query)) {
/* Get field information for all fields */
while ($finfo = maxdb_fetch_field($result)) {
printf("Name: %s\n", $finfo->name);
printf("Table: %s\n", $finfo->table);
printf("max. Len: %d\n", $finfo->max_length);
printf("Flags: %d\n", $finfo->flags);
printf("Type: %d\n\n", $finfo->type);
}
maxdb_free_result($result);
}
/* close connection */
maxdb_close($link);
?>
]]>
</programlisting>
</example>
<para>
The above examples would produce the following output:
</para>
<screen>
<![CDATA[
Name: NAME
Table:
max. Len: 10
Flags: -1
Type: 2
Name: CNO
Table:
max. Len: 4
Flags: -1
Type: 0
]]>
</screen>
</refsect1>
</refentry>
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-->
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