Bug #70949 [Fbk]: SQL Statements With Limit And Offset Fail

From: Date: Sat, 21 Nov 2015 00:24:13 +0000
Subject: Bug #70949 [Fbk]: SQL Statements With Limit And Offset Fail
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-197359@lists.php.net to get a copy of this message
Edit report at https://bugs.php.net/bug.php?id=70949&edit=1

 ID:                 70949
 Updated by:         rasmus@php.net
 Reported by:        s7g2vp2 at yahoo dot co dot uk
 Summary:            SQL Statements With Limit And Offset Fail
 Status:             Feedback
 Type:               Bug
 Package:            MySQLi related
 Operating System:   Windows Server 2012
 PHP Version:        7.0.0RC7
 Block user comment: N
 Private report:     N

 New Comment:

Are you getting a MySQL error? A common cause of this is that you are sending something than a
positive integer as the offset. For example, if you are doing something like:

    $offset = ceil($page * 10);

$offset is now a float because ceil() always returns a float and the driver will pass that as
something like "10.0" which will make offset fail. Make sure you cast any offsets you
substitute into your query to an int first. eg.

    $offset = (int)ceil($page * 10);


Previous Comments:
------------------------------------------------------------------------
[2015-11-20 14:39:32] laruence@php.net

Thank you for this bug report. To properly diagnose the problem, we
need a short but complete example script to be able to reproduce
this bug ourselves. 

A proper reproducing script starts with <?php and ends with ?>,
is max. 10-20 lines long and does not require any external 
resources such as databases, etc. If the script requires a 
database to demonstrate the issue, please make sure it creates 
all necessary tables, stored procedures etc.

Please avoid embedding huge scripts into the report.



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[2015-11-20 11:10:42] s7g2vp2 at yahoo dot co dot uk

Description:
------------
While testing our app using PHP7RC7 we noticed some of the SQL statements failed to return a result
set.

After some investigation it appears that the syntax LIMIT x OFFSET y causes a problem. The
alternative syntax LIMIT y,x does appear to work.

We are using MySQLi driver and prepared statements. The LIMIT & OFFSET values are part of the
statement and not bound.

All statements work in previous versions of PHP and also work in MySQL Workbench.



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Edit this bug report at https://bugs.php.net/bug.php?id=70949&edit=1


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