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PDO not working in


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Using XP Pro

I have PDO working with this version:


The Uniform Server 8.4.0

Apache 2.4.1

MySQL 5.5.21-community

PHP 5.4.0


eAccelerator 1.0-svn427

APC 3.1.7




tried updating to:


The Uniform Server 8.4.0

Apache 2.4.3 VC10 - OpenSSl 0.9.8x

MySQL 5.5.29-community

PHP 5.4.11

phpMyAdmin 3.5.5

eAccelerator 1.0-git42067ac7e2

APC 3.1.14

Xdebug 2.2.1




now with test connect script I'm getting:


Server port: 3306

Connecting to mysql Database... Connected successfully

Connecting to mysqli Database... Connected successfully mysqli


PDO connect array:

Array ( [db] => Array ( [driver] => mysql [host] => localhost [dbname] => test [username] => test [password] => q4w3e2r1 ) )


SQLSTATE[HY000] [1045] Access denied for user ''@'localhost' (using password: NO)



Any Ideas why?

I have dragged and dropped the db, manually added the db,

Double checked the all the ini files and compared them with a program to the earlier version ini's


deleted and resetup the server a least 8-9 times...


PDO will not work but if I switch back to old version it works...


Also tried replacing the extensions with the older versions in php.


And tried other usernames in mysql and tried connecting as root...

Still won't work...

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  • 10 months later...

Just went back to using PDO from mysqli and figured it out... When I added the array to start the PDO I forgot the ' quotes around the dsn and un/pw

The quotes need to be there.

$db = new PDO('mysql:host=localhost;dbname=testdb;charset=utf8', 'username', 'password');
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