#46429 [Bgs]: columnCount() on sqlite3 returns invalid column count
| From: | felipe@php.net | Date: | Fri, 31 Oct 2008 11:04:31 +0000 |
| Subject: | #46429 [Bgs]: columnCount() on sqlite3 returns invalid column count | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-130346@lists.php.net to get a copy of this message | ||
ID: 46429
Updated by: felipe@php.net
Reported By: balustefan at gmail dot com
Status: Bogus
Bug Type: PDO related
Operating System: FreeBSD 7.0-RELEASE i386
PHP Version: 5.2.6
New Comment:
But the query was executed. This is the requirement to you can get the
number of fields.
Previous Comments:
------------------------------------------------------------------------
[2008-10-31 10:49:41] balustefan at gmail dot com
Well, are you can see from the fetchHost() function, I call prepare()
then call execute().
This is the actual function that I use:
function fetchHost($hwAddr)
{
global
$appErr,
$sqlPDO;
$sqlQuery = "SELECT * FROM hosts WHERE hw = ?";
var_dump($hwAddr);
if (($sqlStatement = $sqlPDO->prepare($sqlQuery)) === false) {
$appErr = $sqlPDO->errorInfo();
return (bool) false;
}
var_dump($sqlStatement);
if ($sqlStatement->execute(array($hwAddr)) === false) {
$appErr = $sqlStatement->errorInfo();
return (bool) false;
}
var_dump($sqlStatement);
var_dump($sqlStatement->columnCount());
if ($sqlStatement->columnCount() < 1)
return (bool) true;
return $sqlStatement->fetch(PDO::FETCH_ASSOC);
}
The results of the var_dump()'s are:
string(17) "00:e0:4c:20:dc:20"
object(PDOStatement)#3 (1) {
["queryString"]=>
string(32) "SELECT * FROM hosts WHERE hw = ?"
}
object(PDOStatement)#3 (1) {
["queryString"]=>
string(32) "SELECT * FROM hosts WHERE hw = ?"
}
int(3)
I certainly don't have 3 entries returned since there are ONLY two
inserted into the database :) and 00:e0:4c:20:dc:20 really doesn't
match any the them.
------------------------------------------------------------------------
[2008-10-31 01:24:10] felipe@php.net
Thank you for taking the time to write to us, but this is not
a bug. Please double-check the documentation available at
http://www.php.net/manual/ and the instructions on how to
report
a bug at http://bugs.php.net/how-to-report.php
See:
http://docs.php.net/manual/en/pdostatement.columncount.php
No result set == no query executed.
(like prepare() not followed by execute())
------------------------------------------------------------------------
[2008-10-30 12:24:37] balustefan at gmail dot com
Description:
------------
Seems like columnCount() returns invelid int value. No mater how many
results match a query, columnCount() will return int(3). Even for no
results.
The underlying database is sqlite3-3.5.6
Reproduce code:
---------------
1. create an sql table in a freshly database file:
sqlite> create table hosts(hw char(18),
> ip varchar(16),
> extra text,
> constraint hw_pkey primary key(hw));
2. insert some data into it:
sqlite> insert into hosts
values('00:19:21:57:44:f8','89.122.239.55','comment');
sqlite> insert into hosts
values('00:e0:4c:20:dc:15','194.102.255.234','some comment');
3. use a php function like this one to fetch a "host":
function fetchHost($hwAddr)
{
$sqlQuery = "SELECT * FROM hosts WHERE hw = ?";
if (($sqlStatement = $sqlPDO->prepare($sqlQuery)) === false)
return (bool) false;
if ($sqlStatement->execute(array($hwAddr)) === false)
return (bool) false;
var_dump($sqlStatement->columnCount());
if ($sqlStatement->columnCount() < 1)
return (bool) true;
return $sqlStatement->fetch(PDO::FETCH_ASSOC);
}
Expected result:
----------------
The output of var_dump() should be 0 if no rows are found, and number
of
rows if all is ok.
Actual result:
--------------
On 0 or more rows returned, columnCount() returns int(3).
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=46429&edit=1