Bug #62528 [Opn]: PDO disregards SQL comments and throws parameter number exceptions
Edit report at https://bugs.php.net/bug.php?id=62528&edit=1
ID: 62528
Updated by: cmb@php.net
Reported by: robin at industrialwebs dot nl
Summary: PDO disregards SQL comments and throws parameter
number exceptions
Status: Open
Type: Bug
Package: PDO related
Operating System: Independent
PHP Version: Irrelevant
Block user comment: N
Private report: N
New Comment:
This is a known issue with emulated prepares; consider to use
native prepares instead.
Previous Comments:
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[2014-08-15 20:48:25] stephen at chomadoma dot net
This still occurs in PHP 5.5.0 with MySQL
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[2012-07-11 07:54:23] robin at industrialwebs dot nl
Description:
------------
Description can also be found here:
http://stackoverflow.com/questions/11415314/pdo-invalid-parameter-number-parameters-in-comments/
The problem is simple: PDO throws an exception when using named or positional parameters in SQL
comments. This is unexpected behaviour and costed me quite a while to figure out.
The thrown exceptions for named and positional parameters are, respectively:
Warning: PDOStatement::execute() [pdostatement.execute]: SQLSTATE[HY093]: Invalid parameter number:
Warning: PDOStatement::execute() [pdostatement.execute]: SQLSTATE[HY093]: Invalid parameter number:
mixed named and positional parameters
Test script:
---------------
Try executing this query using PDO:
SELECT
x
FROM
y
WHERE
-- CHECKING IF X = ? --
x = :y
AND
1 = 2
Or this one:
SELECT
x
FROM
y
WHERE
-- CHECKING IF X = :Z --
x = :y
AND
1 = 2
Expected result:
----------------
This should execute the query with only :Z as bound parameter.
Actual result:
--------------
Exceptions because parameters in comments get parsed.
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Edit this bug report at https://bugs.php.net/bug.php?id=62528&edit=1
Thread (4 messages)