From:
Operating system: all
PHP version: 5.4SVN-2011-09-05 (SVN)
Package: MySQLi related
Bug Type: Bug
Bug description:mysqli_num_rows() returns always 0 for unbuffered, when mysqlnd
is used
Description:
------------
As the description says, there is wrong check in mysqli, which doesn't
allow the mysqlnd code to run. mysqli returns always 0 for num_rows() even
if the whole result set has been read. This bug exists since 5.3.0, which
first bundled mysqli with mysqlnd.
Test script:
---------------
./php -r
'$c=mysqli_connect("127.0.0.1","root","root","test");var_dump($c->real_query("SELECT
1"));var_dump($res=$c->use_result(), mysqli_num_rows($res),
$res->fetch_assoc(), mysqli_num_rows($res), $res->fetch_assoc(),
mysqli_num_rows($res));'
Expected result:
----------------
Warning: mysqli_num_rows(): Function cannot be used with MYSQL_USE_RESULT
in Command line code on line 1
Warning: mysqli_num_rows(): Function cannot be used with MYSQL_USE_RESULT
in Command line code on line 1
object(mysqli_result)#2 (5) {
["current_field"]=>
int(0)
["field_count"]=>
int(1)
["lengths"]=>
array(1) {
[0]=>
int(1)
}
["num_rows"]=>
int(1)
["type"]=>
int(0)
}
int(0)
array(1) {
[1]=>
string(1) "1"
}
int(0)
NULL
int(1) ----- here is the difference
Actual result:
--------------
Warning: mysqli_num_rows(): Function cannot be used with MYSQL_USE_RESULT
in Command line code on line 1
Warning: mysqli_num_rows(): Function cannot be used with MYSQL_USE_RESULT
in Command line code on line 1
object(mysqli_result)#2 (5) {
["current_field"]=>
int(0)
["field_count"]=>
int(1)
["lengths"]=>
array(1) {
[0]=>
int(1)
}
["num_rows"]=>
int(1)
["type"]=>
int(0)
}
int(0)
array(1) {
[1]=>
string(1) "1"
}
int(0)
NULL
int(0) --- should have been 1
--
Edit bug report at https://bugs.php.net/bug.php?id=55582&edit=1
--
Try a snapshot (PHP 5.4):
https://bugs.php.net/fix.php?id=55582&r=trysnapshot54
Try a snapshot (PHP 5.3):
https://bugs.php.net/fix.php?id=55582&r=trysnapshot53
Try a snapshot (trunk):
https://bugs.php.net/fix.php?id=55582&r=trysnapshottrunk
Fixed in SVN:
https://bugs.php.net/fix.php?id=55582&r=fixed
Fixed in SVN and need be documented:
https://bugs.php.net/fix.php?id=55582&r=needdocs
Fixed in release:
https://bugs.php.net/fix.php?id=55582&r=alreadyfixed
Need backtrace:
https://bugs.php.net/fix.php?id=55582&r=needtrace
Need Reproduce Script:
https://bugs.php.net/fix.php?id=55582&r=needscript
Try newer version:
https://bugs.php.net/fix.php?id=55582&r=oldversion
Not developer issue:
https://bugs.php.net/fix.php?id=55582&r=support
Expected behavior:
https://bugs.php.net/fix.php?id=55582&r=notwrong
Not enough info:
https://bugs.php.net/fix.php?id=55582&r=notenoughinfo
Submitted twice:
https://bugs.php.net/fix.php?id=55582&r=submittedtwice
register_globals:
https://bugs.php.net/fix.php?id=55582&r=globals
PHP 4 support discontinued:
https://bugs.php.net/fix.php?id=55582&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=55582&r=dst
IIS Stability:
https://bugs.php.net/fix.php?id=55582&r=isapi
Install GNU Sed:
https://bugs.php.net/fix.php?id=55582&r=gnused
Floating point limitations:
https://bugs.php.net/fix.php?id=55582&r=float
No Zend Extensions:
https://bugs.php.net/fix.php?id=55582&r=nozend
MySQL Configuration Error:
https://bugs.php.net/fix.php?id=55582&r=mysqlcfg
