Fix for bug #68087 (ODBC not reading DATE columns correctly)

Temporary variable indicating column field type ID should be
reset to default for loop iteration (i.e. every column in the
record set. The old buggy code made it persist across all columns
leading to invalid reads from the buffer, if for example a DATE
column was preceded by a VARCHAR column.

ext/odbc/php_odbc.c

@@ -951,14 +951,15 @@ int odbc_bindcols(odbc_result *result TSRMLS_DC)
 	SQLUSMALLINT	colfieldid;
 	int		charextraalloc;
 
-	colfieldid = SQL_COLUMN_DISPLAY_SIZE;
-	charextraalloc = 0;
 	result->values = (odbc_result_value *) safe_emalloc(sizeof(odbc_result_value), result->numcols, 0);
 
 	result->longreadlen = ODBCG(defaultlrl);
 	result->binmode = ODBCG(defaultbinmode);
 
 	for(i = 0; i < result->numcols; i++) {
+		charextraalloc = 0;
+		colfieldid = SQL_COLUMN_DISPLAY_SIZE;
+
 		rc = SQLColAttributes(result->stmt, (SQLUSMALLINT)(i+1), SQL_COLUMN_NAME, 
 				result->values[i].name, sizeof(result->values[i].name), &colnamelen, 0);
 		rc = SQLColAttributes(result->stmt, (SQLUSMALLINT)(i+1), SQL_COLUMN_TYPE, 

ext/odbc/tests/bug68087.phpt

@@ -0,0 +1,57 @@
+--TEST--
+odbc_exec(): Getting accurate date data from query
+--SKIPIF--
+<?php include 'skipif.inc'; ?>
+--FILE--
+<?php
+
+include 'config.inc';
+
+$id_1_date = '2014-09-23';
+$id_2_date = '2014-09-24';
+
+$conn = odbc_connect($dsn, $user, $pass);
+
+@odbc_exec($conn, 'CREATE DATABASE odbcTEST');
+
+odbc_exec($conn, 'CREATE TABLE FOO (ID INT, VARCHAR_COL VARCHAR(100), DATE_COL DATE)');
+
+odbc_exec($conn, "INSERT INTO FOO(ID, VARCHAR_COL, DATE_COL) VALUES (1, 'hello', '$id_1_date')");
+odbc_exec($conn, "INSERT INTO FOO(ID, VARCHAR_COL, DATE_COL) VALUES (2, 'helloagain', '$id_2_date')");
+
+$res = odbc_exec($conn, 'SELECT * FROM FOO ORDER BY ID ASC');
+
+while(odbc_fetch_row($res)) {
+	$id = odbc_result($res, "ID");
+	$varchar_col = odbc_result($res, "VARCHAR_COL");
+	$date = odbc_result($res, "DATE_COL");
+
+	if ($id == 1) {
+		if ($date != $id_1_date) {
+			print "Date_1 mismatched\n";
+		} else {
+			print "Date_1 matched\n";
+		}
+	} else {
+		if ($date != $id_2_date) {
+			print "Date_2 mismatched\n";
+		} else {
+			print "Date_2 matched\n";
+		}
+	}
+}
+
+?>
+--EXPECT--
+Date_1 matched
+Date_2 matched
+--CLEAN--
+<?php
+include 'config.inc';
+
+$conn = odbc_connect($dsn, $user, $pass);
+
+odbc_exec($conn, 'DROP TABLE FOO');
+odbc_exec($conn, 'DROP DATABASE odbcTEST');
+
+?>