Bug #73725 [NEW]: Unable to retrieve value of varchar(max) type

From: Date: Mon, 12 Dec 2016 16:06:47 +0000
Subject: Bug #73725 [NEW]: Unable to retrieve value of varchar(max) type
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-205932@lists.php.net to get a copy of this message 
From:             honza dot hink at gmail dot com
Operating system: Windows 10
PHP version:      7.1.0
Package:          ODBC related
Bug Type:         Bug
Bug description:Unable to retrieve value of varchar(max) type

Description:
------------
If result set contains a column type varchar(max) then all functions
(odbc_fetch_array, odbc_fetch_row etc.) return some random bytes.
It looks like buffer overrun.
If you change declaration varchar(max) to varchar(200) then it will
work.
Very old bug, I hopped it will be finally fixed in PHP 7, but wainly.


Test script:
---------------
<?php
	$con=odbc_connect("Local64bit","you","yourPWD");
	$res=odbc_do($con,"set nocount on
	create table #t(i int, txt varchar(max))
	insert into #t values(101,'Any text')
	select i,txt from #t
	");
	$r=odbc_fetch_array($res);
	print_r($r);
?>

Expected result:
----------------
Array ( [i] => 101 [txt] => Any text ) 

Actual result:
--------------
Array ( [i] => 101 [txt] => €k ) 

-- 
Edit bug report at https://bugs.php.net/bug.php?id=73725&edit=1
-- 
Try a snapshot (PHP 5.4):   https://bugs.php.net/fix.php?id=73725&r=trysnapshot54
Try a snapshot (PHP 5.5):   https://bugs.php.net/fix.php?id=73725&r=trysnapshot55
Try a snapshot (trunk):     https://bugs.php.net/fix.php?id=73725&r=trysnapshottrunk
Fixed in SVN:               https://bugs.php.net/fix.php?id=73725&r=fixed
Fixed in release:           https://bugs.php.net/fix.php?id=73725&r=alreadyfixed
Need backtrace:             https://bugs.php.net/fix.php?id=73725&r=needtrace
Need Reproduce Script:      https://bugs.php.net/fix.php?id=73725&r=needscript
Try newer version:          https://bugs.php.net/fix.php?id=73725&r=oldversion
Not developer issue:        https://bugs.php.net/fix.php?id=73725&r=support
Expected behavior:          https://bugs.php.net/fix.php?id=73725&r=notwrong
Not enough info:            https://bugs.php.net/fix.php?id=73725&r=notenoughinfo
Submitted twice:            https://bugs.php.net/fix.php?id=73725&r=submittedtwice
register_globals:           https://bugs.php.net/fix.php?id=73725&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=73725&r=php4
Daylight Savings:           https://bugs.php.net/fix.php?id=73725&r=dst
IIS Stability:              https://bugs.php.net/fix.php?id=73725&r=isapi
Install GNU Sed:            https://bugs.php.net/fix.php?id=73725&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=73725&r=float
No Zend Extensions:         https://bugs.php.net/fix.php?id=73725&r=nozend
MySQL Configuration Error:  https://bugs.php.net/fix.php?id=73725&r=mysqlcfg

Thread (11 messages)

« previous php.bugs (#205932) next »