#28512 [Com]: Mssql.c runtime error

ID: 28512 Comment by: daniel dot beet at accuratesoftware dot com Reported By: barry at hpfm dot com dot au Status: Closed Bug Type: *Web Server problem Operating System: Redhat 9.0 PHP Version: 4.3.5 New Comment: I have since found that my patch did not fully fix the bug. Sorry to mess you about, but here is a better patch that will work for DECIMAL and NUMERIC columns up to the maximum allowed precision (38). I have also removed the extra code in the first patch for SQLMONEY types, as they were catered for further up in the function. Also I noticed that the function mssql_field_type() returns Decimal types as "real", where as Numeric types are returned as "numeric", since they are synonymous, I thought that this was not right, and that both should be called "numeric"? Patch against: php_mssql.c CVS version 1.86.2.34: 841d840 < case SQLNUMERIC: 857,859d855 < case SQLMONEY : < case SQLMONEY4 : < case SQLMONEYN : 862c858 < res_length += 5; --- > res_length = 40; 932a929,930 > res_length = 23; > break; 935c933 < res_length += 5; --- > res_length = 40; 1070a1069,1071 > case SQLMONEY4: > case SQLMONEY: > case SQLMONEYN: 1505d1505 < case SQLDECIMAL: 1517a1518 > case SQLDECIMAL: Previous Comments: ------------------------------------------------------------------------ [2004-06-30 21:47:55] fmk@php.net 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 http://snaps.php.net/. Thank you for the report, and for helping us make PHP better. ------------------------------------------------------------------------ [2004-06-30 16:39:20] daniel dot beet at accuratesoftware dot com Sorry, PHP versions 4.3.7 and 4.3.4 Thanks, Dan ------------------------------------------------------------------------ [2004-06-30 16:34:35] daniel dot beet at accuratesoftware dot com We are experiencing a similar crash, when values in decimal or numeric columns are larger than certain values. Reproduced on MS SQL 2000 on Windows 2000 Server, with Apache 1.3.27 as webserver or CLI php exe on Win XP. Create table with data: CREATE TABLE [dbo].[test] ( [test_decimal] [decimal](23, 6) NULL , [test_numeric] [numeric](23, 6) NULL ) ON [PRIMARY] GO INSERT INTO test (test_decimal, test_numeric) VALUES (99999999999999999.999999, 99999999999999999.999999) GO Run following PHP script: <?php $conn = mssql_connect('yourserver', 'you', 'password'); echo "Connection OK<br />\n"; mssql_select_db('yourdatabase', $conn); echo "DB selected OK<br />\n"; $result = mssql_query('select test_decimal, test_numeric from test', $conn); echo "Query OK<br />\n"; $array[] = mssql_fetch_field($result, 0); $array[] = mssql_field_name($result, 0); $array[] = mssql_field_type($result, 0); $array[] = mssql_field_length($result, 0); $array[] = mssql_fetch_assoc($result); echo "Results fetched OK<br />\n"; echo '<pre>'; var_export($array); echo '</pre>'; mssql_close($conn); ?> I have solved the issue with the following diff of changes to php_mssql.c: 841a842 > case SQLDECIMAL: 850,852c851,866 < if (column_type == SQLDATETIM4) res_length += 14; < if (column_type == SQLDATETIME) res_length += 10; < --- > switch (column_type) { > case SQLDATETIM4 : > res_length += 14; > break; > case SQLDATETIME : > res_length += 10; > break; > case SQLMONEY : > case SQLMONEY4 : > case SQLMONEYN : > case SQLDECIMAL : > case SQLNUMERIC : > res_length += 5; > break; > } > 919a934,935 > case SQLDECIMAL : > case SQLNUMERIC : The buffer res_buf was beeing allocated to small (20 for above columns, when 24 is required) Hope that this helps, as it is critical for us! ------------------------------------------------------------------------ [2004-06-23 23:22:56] barry at hpfm dot com dot au Problem still exists - I'll try to get more details on the exact sequence of calls though the only real notive we get is a radical reduction in the performance of the queries and the associated <path_to_logs>/error_log file produced by Apache. ------------------------------------------------------------------------ [2004-06-02 01:00:03] php-bugs at lists dot php dot net No feedback was provided for this bug for over a week, so it is being suspended automatically. If you are able to provide the information that was originally requested, please do so and change the status of the bug back to "Open". ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/28512 -- Edit this bug report at http://bugs.php.net/?id=28512&edit=1