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[2010-04-16 15:03 UTC] aaron dot hawley at vtinfo dot com
Description: ------------ PHP issues a warning when the parameter count is wrong for db2_execute(). Unfortunately, db2_stmt_errormsg() and db2_stmt_error() never return anything after this occurs. The following code shows examples of running db_execute(). One with too few paramaters. The other has too many. Only the latter creates the warning "Statement Execute Failed" This is problematic when other API's want to use ibm_db2 as a driver. There is no error message to work with when this error occurs. For example, see how it is affecting the Zend Framework, here. http://framework.zend.com/issues/browse/ZF-9663 Reproduce code: --------------- $conn = db2_connect('db', 'user', '****'); if (!$conn) { $err = db2_conn_errormsg($conn); printf("%s: %s\n", 'Problem connecting', $err); db2_close($conn); exit(1); } // else { $sql = 'SELECT "name" FROM "table" AS "t" WHERE "id" = ?'; $stmt = db2_prepare($conn, $sql); if (!$stmt) { $err = db2_stmt_errormsg($stmt); printf("%s: %s\n", 'Prepare failed', $err); db2_close($conn); exit(1); } // else { $result = db2_execute($stmt, array(/* warning condition */)); if (!$result) { $err = db2_stmt_errormsg($stmt); printf("%s: %s\n", 'Query failed', $err); $result = db2_execute($stmt, array(1, 2 /* failure condition */)); if (!$result) { $err = db2_stmt_errormsg($stmt); printf("%s: %s\n", 'Query failed', $err); } db2_close($conn); exit(1); } // else { while($row = db2_fetch_assoc($stmt)) { foreach ($row as $col => $val) { printf(" %s: %s\n", $col, $val); } printf("--\n"); } db2_close($conn); exit(0); Expected result: ---------------- PHP Warning: db2_execute(): Param count incorrect in bug.php on line 22 Query failed: PHP Warning: db2_execute(): Param count incorrect in bug.php on line 27 PHP Warning: db2_execute(): Statement Execute Failed in bug.php on line 27 Query failed: Actual result: -------------- PHP Warning: db2_execute(): Param count incorrect in bug.php on line 22 PHP Warning: db2_execute(): Statement Execute Failed in bug.php on line 22 Query failed: Param count incorrect PHP Warning: db2_execute(): Param count incorrect in bug.php on line 27 PHP Warning: db2_execute(): Statement Execute Failed in bug.php on line 27 Query failed: Param count incorrect PatchesPull RequestsHistoryAllCommentsChangesGit/SVN commits
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Last updated: Sat Nov 08 05:00:02 2025 UTC |
Too few params will not produce db2_stmt_error, because SQLExecute never happens (code ibm_db2.c below) PHP_FUNCTION(db2_execute) { rc = SQLNumParams((SQLHSTMT)stmt_res->hstmt, (SQLSMALLINT*)&num); if ( num != 0 ) { : numOpts = zend_hash_num_elements(Z_ARRVAL_P(parameters_array)); if (numOpts > num) { php.log-------->php_error_docref(NULL TSRMLS_CC, E_WARNING, "Param count incorrect"); too many ok---->numOpts = stmt_res->num_params; } else if (numOpts < num) { php.log-------->php_error_docref(NULL TSRMLS_CC, E_WARNING, "Param count incorrect"); too few stop--->RETURN_FALSE; } zend_hash_internal_pointer_reset(Z_ARRVAL_P(parameters_array)); for ( i = 0; i < numOpts; i++) { : ... bind parms not passed (impossible) ... } : } --->have SQLExecute for SQL errors db2_stmt_error <--- ---> too many -- yes db2_stmt_error <--- ---> too few -- no db2_stmt_error (stop above) <--- rc = SQLExecute((SQLHSTMT)stmt_res->hstmt); if ( rc == SQL_ERROR ) { php_error_docref(NULL TSRMLS_CC, E_WARNING, "Statement Execute Failed"); _php_db2_check_sql_errors(stmt_res->hstmt, SQL_HANDLE_STMT, rc, 1, NULL, -1, 1 TSRMLS_CC); RETVAL_FALSE; } : }