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Doc Bug #23990 mssql_fetch_assoc does not support long column names
Submitted: 2003-06-03 11:29 UTC Modified: 2003-06-03 19:44 UTC
From: php at electricsurfer dot com Assigned:
Status: Closed Package: Documentation problem
PHP Version: 4.3.2 OS: Win XP PRO
Private report: No CVE-ID: None
View Developer Edit
 [2003-06-03 11:29 UTC] php at electricsurfer dot com 
If you select a field with a column name that has more than 30 chars. Using mssql_fetch_assoc or mssql_fetch_row to fetch it will only return a key with the 1st 30 chars.
( Mysql functions work with longer column names )

<?
// connect to db Here
$result = mssql_query('select MyVeryVeryVeryVeryVeryVeryLongColumnName from table');
$row = mssql_fetch_assoc($result);
// $row = array('MyVeryVeryVeryVeryVeryVeryLong'=>50) (only first 30 chars in key)
?>

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 [2003-06-03 11:41 UTC] php at electricsurfer dot com 
with mssql_fetch_assoc or mssql_fetch_array.

NOT mssql_fetch_row.
 [2003-06-03 12:16 UTC] php at electricsurfer dot com 
mssql_field_name() has same problem
 [2003-06-03 16:42 UTC] php at electricsurfer dot com 
Just found bug #20810 which coincides with this one.

mssql_fetch_field() also has the same problem.
 [2003-06-03 18:48 UTC] fmk@php.net 
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to report
a bug at http://bugs.php.net/how-to-report.php

Functions returning a column name are based on the dbcolname() function in DBLIB. DBLIB from microsoft was developed for SQL Server 6.x where the max identifier length was 30

#define SQL_MAX_COLUMN_NAME_LEN             30

This is only a problem on Win32 where we use DBLIB from Microsoft. On platforms where we use FreeTDS this is not a problem.
 [2003-06-03 19:44 UTC] philip@php.net 
This is now documented and will show up when the manual is next built, thanks for the report :)

http://cvs.php.net/cvs.php/phpdoc/en/reference/mssql/reference.xml
 
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