From:             craig dot marvelley at boxuk dot com
Operating system: Windows/Linux
PHP version:      5.3.0beta1
PHP Bug Type:     MySQL related
Bug description:  mysql_fetch_field ignores zero offset

Description:
------------
When calling mysql_fetch_field(), it seems that in PHP 5.3 the offset 
parameter, when set to 0, is being ignored - the current pointer 
offset is returned instead. According to the manual, that should only 
happen if the field offset is not supplied.

I've tested this in PHP 4 and 5.2 but the above behaviour isn't 
repeated.




Reproduce code:
---------------
// connect to database, etc...

$sql = "SELECT * FROM someTable";
$result = mysql_query($sql);

// set the internal pointer to the second field...
mysql_field_seek($result, 1);

// ... but we'll start at the first field (i.e. ignore the pointer)
$i = 0;

while($i<mysql_num_fields($result))
{
  $meta=mysql_fetch_field($result,$i);
  echo $i . "." . $meta->name . "<br />";
  $i++;
}

Expected result:
----------------
For a table with columns like this:

column1 | column2 | column3

I'd expect to see

0. column1
1. column2
2. column3

(This happens in PHP < 5.3beta1)

Actual result:
--------------
I get this:

0. column2
1. column2
2. column3




-- 
Edit bug report at http://bugs.php.net/?id=47438&edit=1
-- 
Try a CVS snapshot (PHP 5.2):        
http://bugs.php.net/fix.php?id=47438&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):        
http://bugs.php.net/fix.php?id=47438&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):        
http://bugs.php.net/fix.php?id=47438&r=trysnapshot60
Fixed in CVS:                        
http://bugs.php.net/fix.php?id=47438&r=fixedcvs
Fixed in CVS and need be documented: 
http://bugs.php.net/fix.php?id=47438&r=needdocs
Fixed in release:                    
http://bugs.php.net/fix.php?id=47438&r=alreadyfixed
Need backtrace:                      
http://bugs.php.net/fix.php?id=47438&r=needtrace
Need Reproduce Script:               
http://bugs.php.net/fix.php?id=47438&r=needscript
Try newer version:                   
http://bugs.php.net/fix.php?id=47438&r=oldversion
Not developer issue:                 
http://bugs.php.net/fix.php?id=47438&r=support
Expected behavior:                   
http://bugs.php.net/fix.php?id=47438&r=notwrong
Not enough info:                     
http://bugs.php.net/fix.php?id=47438&r=notenoughinfo
Submitted twice:                     
http://bugs.php.net/fix.php?id=47438&r=submittedtwice
register_globals:                    
http://bugs.php.net/fix.php?id=47438&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=47438&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=47438&r=dst
IIS Stability:                       
http://bugs.php.net/fix.php?id=47438&r=isapi
Install GNU Sed:                     
http://bugs.php.net/fix.php?id=47438&r=gnused
Floating point limitations:          
http://bugs.php.net/fix.php?id=47438&r=float
No Zend Extensions:                  
http://bugs.php.net/fix.php?id=47438&r=nozend
MySQL Configuration Error:           
http://bugs.php.net/fix.php?id=47438&r=mysqlcfg

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