a revised version marius' code that works with Memo fields. (also returns rather than prints strings)

function ODBCResourceToHTML($res, $sTable, $sRow)
{$cFields = odbc_num_fields($res);
 $strTable = "<table $sTable ><tr>";  
 for ($n=1; $n<=$cFields; $n++)
   {$strTable .= "<td $sRow><b>". str_replace("_", " ", odbc_field_name($res, $n)) . "</b></td>";}
   $strTable .= "</tr>";
   while(odbc_fetch_row($res))
   { $strTable .= "<tr>";
      for ($n=1; $n<=$cFields; $n++)
             {$cell = odbc_result($res, $n);
    if ($cell=='') {$strTable .= "<td $sRow>&nbsp;</td>";}
             else {$strTable .= "<td $sRow>". $cell . "</td>";}}
     $strTable .= "</tr>";}
 $strTable .= "</table>";
 Return $strTable;} 

DEAR MODERATORS: you would save yourselve much much time by making this entire manual into a wiki (ie like http://en.wikipedia.org ) and within a year this would be the best manual on anything!!

best wishes, Erich

I've written this little function that functions simirarly to odbc_result_all, but works with MySQL:

/**
 * This function emulates the odbc_result_all function, which will return a HTML table cosisting of
 * the results of an SQL query. 
 * Usage: pass a mysql result set to this function, and it will return (not output) a string containing 
 * an HTML table
 * Parameters: 
 * - $result is your mysql result set (result of a mysql_query() function call)
 * - $tableFeatures is a string containing any HTML TABLE features you would like in the table 
 *   (eg. BORDER="0" etc.)
 */
function _mysql_result_all($result, $tableFeatures="") {
  $table .= "<!--Debugging output for SQL query-->\n\n";
  $table .= "<table $tableFeatures>\n\n";
  $noFields = mysql_num_fields($result);
  $table .= "<tr>\n";
  for ($i = 0; $i < $noFields; $i++) {
    $field = mysql_field_name($result, $i);
    $table .= "\t<th>$field</th>\n";
  }
  while ($r = mysql_fetch_row($result)) {
    $table .= "<tr>\n";
    foreach ($r as $kolonne) {
      $table .= "\t<td>$kolonne</td>\n";
    }
    $table .= "</tr>\n";
  }
  $table .= "</table>\n\n";
  $table .= "<!--End debug from SQL query-->\n\n";
  return $table;
}

Enjoy...

As some people stated in the ODBC overview, some buggy drivers always return the number of rows to be -1. AFAIK the only way to help this situation is to count the rows by calls to odbc_fetch_into or odbc_fetch_row and then build the table yourself.

odbc_result_all($result) cycles through 
$result. So a subsequent call to odbc_fetch_row($result) will fail.
You must use odbc_fetch_row($result, 1)
to reset $result.  (But when I do that,
I get a crash!)

The $format parameter is an optional string that gets inserted in the <table> tag. The string is printed as-is. E.g.:

<?php
odbc_result_all($res, 'id="users" class="listing"');
?>

... prints:

<table id="users" class="listing" >...