Edit report at https://bugs.php.net/bug.php?id=61516&edit=1

 ID:                 61516
 Comment by:         julien at palard dot fr
 Reported by:        julien at palard dot fr
 Summary:            PDOStatement::errorInfo returning NULL for driver
                     code and message
 Status:             Open
 Type:               Bug
 Package:            PDO related
 Operating System:   Linux 2.6.32-5-amd64
 PHP Version:        5.4.0
 Block user comment: N
 Private report:     N

 New Comment:

u...@php.net, I think that one can expect to have as much as possible 
informations about an error, and that it's not fair to provide different level 
of precision to one querying the error description from one way.

Just think about those who just didn't spotted the difference or those who 
simply don't want to use ERRMODE_WARNING, they will have harder times to fix 
their SQL bugs, that's not a good thing. I personally think this should be 
fixed.


Previous Comments:
------------------------------------------------------------------------
[2012-04-30 16:39:38] u...@php.net

The PDO warning is based on a static look-up table compiled into the PDO core. 
That means, it is out of control of any PDO driver. A SQL code reported by a 
driver is translated into whatever message the PDO core likes.

Any PDO driver is free to provide an internal callback to update the contents 
of the return value of errorInfo(). Providing an internal callback is not 
mandatory.

Due to the different source of the error message one must not expect error 
messages to be equal. At the end of the day: this is PDO...

------------------------------------------------------------------------
[2012-03-26 16:49:00] julien at palard dot fr

Description:
------------
While using not emulated prepared statement against MySQL 5.5, warnings (using 
ERRMODE_WARNING) are more verbose than errorInfo(). With prepared queries, 
errorInfo return (string, NULL, NULL).

This fact is true with or without ERRMODE_WARNING.

And this fact is also true, but different while using standard queries :

What the warning give me :
{{{
[WARNING] PDO::query() [<a href='pdo.query'>pdo.query</a>]: SQLSTATE[23000]: 
Integrity constraint violation: 1062 Duplicate entry '83-27
7727' for key 'UNIQUE'
}}}

What I got from errorInfo()[2] (Missing the "Integrity constraint violation:" 
string, built client side from error code ?) :
{{{
Duplicate entry '83-277727' for key 'UNIQUE'
}}}



Test script:
---------------
<?php

class My_PDOStatement extends PDOStatement
{
    public function execute($input_parameters = NULL)
    {
        $res = parent::execute($input_parameters);
        if ($res === FALSE)
            var_dump($this->errorInfo());
        return $res;
    }
}

$options = array(PDO::ATTR_PERSISTENT => FALSE,
                 PDO::ATTR_ERRMODE => PDO::ERRMODE_WARNING,
                 PDO::ATTR_EMULATE_PREPARES => FALSE,
                 PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
                 PDO::ATTR_STATEMENT_CLASS => array('My_PDOStatement'));

$pdo = new PDO(...);

$stmt = $pdo->prepare("SELECT :a + :a");
$stmt->execute(array('a' => 1)); // Willingly generate 'Invalid parameter 
number'
var_dump($stmt->fetchAll());


Expected result:
----------------
I Expect errorInfo() to return error messages.

Actual result:
--------------
errorInfo() in this specific case return (string, NULL, NULL).


------------------------------------------------------------------------



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