php-doc-en/reference/maxdb/functions/maxdb-field-tell.xml

<?xml version="1.0" encoding="iso-8859-1"?>
<!-- $Revision: 1.2 $ -->
  <refentry id="function.maxdb-field-tell">
   <refnamediv>
    <refname>maxdb_field_tell</refname>
    <refname>result->current_field</refname>
    <refpurpose>
     Get current field offset of a result pointer
    </refpurpose>
   </refnamediv>
   <refsect1>
    <title>Description</title>
     <para>Procedural style:</para>
     <methodsynopsis>
      <type>int</type><methodname>maxdb_field_tell</methodname>
      <methodparam><type>resource</type><parameter>result</parameter></methodparam>
     </methodsynopsis>
     <para>Object oriented style (property):</para>
     <classsynopsis>
      <ooclass><classname>result</classname></ooclass>
      <fieldsynopsis>
       <type>int</type>
       <varname>current_field</varname>
      </fieldsynopsis>
     </classsynopsis>
     <para> 
      Returns the position of the field cursor used for the last
      <function>maxdb_fetch_field</function> call. This value can
      be used as an argument to <function>maxdb_field_seek</function>.
     </para>
   </refsect1>
   <refsect1>
    &reftitle.returnvalues;
    <para>
     Returns current offset of field cursor.
    </para>
   </refsect1>
   <refsect1>
    &reftitle.seealso;
    <para>
     <function>maxdb_fetch_field</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()) {

       /* get fieldpointer offset */
       $currentfield = $result->current_field;

       printf("Column    %d:\n", $currentfield); 
       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)) {
 
       /* get fieldpointer offset */
       $currentfield = maxdb_field_tell($result);

       printf("Column    %d:\n", $currentfield); 
       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[
Column    1:
Name:     NAME
Table:
max. Len: 10
Flags:    -1
Type:     2

Column    2:
Name:     CNO
Table:
max. Len: 4
Flags:    -1
Type:     0
]]>
    </screen>
   </refsect1>
  </refentry>

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