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Bug #43912 Interbase column names are truncated to 31 characters
Submitted: 2008-01-22 21:14 UTC Modified: 2008-01-23 03:46 UTC
From: virtue at rocketmonkeys dot com Assigned:
Status: Closed Package: InterBase related
PHP Version: 5.2.5 OS: Windows XP SP2
Private report: No CVE-ID: None
 [2008-01-22 21:14 UTC] virtue at rocketmonkeys dot com
The PHP interbase functions seem not to support column names that are longer than 31 characters with Interbase 8.1.  Interbase 5.5 through 6.5 are supposedly limited to 31 character names, but later version are not.

I can query the field with PHP using the full name.  The correct value is returned, but the returned name is incorrectly truncated to 31 characters.  The Interbase IBConsole program returns the correct field name, untruncated.

Reproduce code:
ibase_query( "create table TEST1 ( A_________B_________C_________D_________E_________F_________ integer );" );
ibase_query( "insert into TEST1 values ( 1 );" );
$result = ibase_query( "select * from TEST1;" );
$object = ibase_fetch_object( $result );
var_dump( $object );

Expected result:
object(stdClass)#2 (1) {

Actual result:
object(stdClass)#2 (1) {


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 [2008-01-22 21:27 UTC] virtue at rocketmonkeys dot com
From the documentation with Interbase 8.1, object names can be up to 67 characters long, plus a NULL terminator.

Valid names for InterBase objects must use the 7-bit ASCII character set (character set ID
2) and must have the following characteristics:
? no spaces
? not case sensitive
? not InterBase keywords
? a maximum of 68 bytes long: 67 bytes plus a null terminator
 [2008-01-23 01:23 UTC]
This bug has been fixed in CVS.

Snapshots of the sources are packaged every three hours; this change
will be in the next snapshot. You can grab the snapshot at
Thank you for the report, and for helping us make PHP better.

 [2008-01-23 03:46 UTC] virtue at rocketmonkeys dot com
iliaa, thank you so much for the fix!  I looked at the CVS commit... such a simple thing, but it makes a *huge* difference for me (I was banging my head against the wall for a good portion today trying to figure this out).  Thanks again, much appreciated!
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