PDO_INFORMIX DSN
This is the way to force mysql PDO driver to use UTF-8 for the connection :
<?php
$pdo = new PDO(
'mysql:host=hostname;dbname=defaultDbName',
'username',
'password',
array(PDO::MYSQL_ATTR_INIT_COMMAND => "SET NAMES utf8")
);
?>
Fonctions MySQL (PDO_MYSQL)
Introduction
PDO_MYSQL est un pilote qui implémente l'interface de PHP Data Objects (PDO) pour autoriser l'accès de PHP aux bases de données de MySQL 3.x, 4.x. et 5.x.
PDO_MYSQL prendra avantage des requêtes natives préparées présentes dans MySQL 4.1 et supérieur. Si vous utilisez une version plus ancienne des bibliothèques clientes mysql, PDO les émulera pour vous.
Avertissement
Prenez garde : certains types de tables MySQL (moteur d'enregistrement) ne supportent pas les transactions. Lorsque vous écrivez du code de base de données transactionnel en utilisant un type de table qui ne supporte pas les transactions, MySQL prétendra qu'une transaction était initiée correctement. De plus, toutes requêtes DLL publiées enverra implicitement toutes les transactions en attente.
Constantes pré-définies
Les constantes ci-dessous sont définies par ce pilote et seront seulement disponibles lorsque l'extension aura été compilée dans PHP ou chargée dynamiquement du moteur d'exécution. De plus, ces constantes spécifiques au pilote devraient être utilisées seulement si vous utilisez ce pilote. En utilisant les attributs spécifiques à mysql avec le pilote de PostGre pourrait causer un comportement inattendu. PDO::getAttribute() pourrait être utilisé pour obtenir l'attribut PDO_ATTR_DRIVER_NAME pour vérifier le pilote, si votre code peut fonctionner sur des pilotes multiples.
- PDO::MYSQL_ATTR_USE_BUFFERED_QUERY (integer)
-
Si un attribut est fixé à TRUE sur une classe
PDOStatement, le pilote MySQL utilisera les
versions bufferisées de l'API MySQL. Si vous écrivez du code portable,
vous devriez utiliser à la place
PDOStatement::fetchAll().
Exemple #1 Forcer la bufferisation des requêtes avec mysql
<?php
if ($db->getAttribute(PDO::ATTR_DRIVER_NAME) == 'mysql') {
$stmt = $db->prepare('select * from foo',
array(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY => true));
} else {
die("mon application fonctionne seulement avec mysql; Je devrais utiliser \$stmt->fetchAll() à la place");
}
?> - PDO::MYSQL_ATTR_LOCAL_INFILE (entier)
-
Active LOAD LOCAL INFILE.
- PDO::MYSQL_ATTR_INIT_COMMAND (entier)
-
Commande à exécuter lors de la connexion au serveur MySQL. Sera automatiquement ré-exécuté lors d'une reconnexion.
- PDO::MYSQL_ATTR_READ_DEFAULT_FILE (entier)
-
Lit les options depuis le fichier nommé optionnel, plutôt que depuis my.cnf.
- PDO::MYSQL_ATTR_READ_DEFAULT_GROUP (entier)
-
Lit les options depuis le groupe nommé du fichier my.cnf ou depuis le fichier spécifié par MYSQL_READ_DEFAULT_FILE.
- PDO::MYSQL_ATTR_MAX_BUFFER_SIZE (entier)
-
Taille maximale du tampon. Par défaut, vaut 1 MiB.
- PDO::MYSQL_ATTR_DIRECT_QUERY (entier)
-
Effectue des requêtes directes, sans utiliser de requêtes préparées.
Sommaire
- PDO_MYSQL DSN — Connexion aux bases de données MySQL
add a note
User Contributed NotesMySQL (PDO)
Davy Defaud
22-Apr-2009 09:30
22-Apr-2009 09:30
brian at diamondsea dot com
25-Jul-2008 08:26
25-Jul-2008 08:26
SQLSTATE[HY000]: General error: 2014 Cannot execute queries while other unbuffered queries are active. ...
After spending hours trying to track down why we were getting this error on a new server, after the same code ran fine on other servers, we found the problem to be an old MySQL _client_ library running on our web server, and a latest-version MySQL _server_ running on the database server's box.
Upgraded the MySQL client on the web server to the current revision and the problem went away.
miller_kurt_e at yahoo dot com
20-Jul-2008 11:03
20-Jul-2008 11:03
SQLSTATE[HY000]: General error: 2014 Cannot execute queries while other unbuffered queries are active. ...
This one can be a royal pain to deal with. Never stack statements to be executed in one go. Nobody ever mentions this possibility in all the posts I've seen dealing with this error.
This example is a Zend Framework example but the theory is the same.
As in:
<?php
$sql = <<<____SQL
CREATE TABLE IF NOT EXISTS `ticket_hist` (
`tid` int(11) NOT NULL,
`trqform` varchar(40) NOT NULL,
`trsform` varchar(40) NOT NULL,
`tgen` datetime NOT NULL,
`tterm` datetime,
`tstatus` tinyint(1) NOT NULL
) ENGINE=ARCHIVE COMMENT='ticket archive';
CREATE TABLE IF NOT EXISTS `request_hist` (
`rqid` int(11) NOT NULL,
`rqtid` int(11) NOT NULL,
`rqsid` int(11) NOT NULL,
`rqdate` datetime NOT NULL,
`rqcode` tinyint(1) NOT NULL,
`rssid` int(11) NOT NULL,
`rsdate` datetime,
`rscode` tinyint(1)
) ENGINE=ARCHIVE COMMENT='request archive';
CREATE TABLE IF NOT EXISTS `relay_hist` (
`rqid` int(5) NOT NULL,
`sdesc` varchar(40) NOT NULL,
`rqemail` varchar(40) NOT NULL,
`sid` int(11) NOT NULL,
`rlsid` int(11) NOT NULL,
`dcode` varchar(5) NOT NULL
) ENGINE=ARCHIVE COMMENT='relay archive';
____SQL;
$result = $this->db->getConnection()->exec($sql);
?>
This will run fine but PDO will balk with the 'unbuffered' error if you follow this with another query.
Instead do:
<?php
$sql = <<<____SQL
CREATE TABLE IF NOT EXISTS `ticket_hist` (
`tid` int(11) NOT NULL,
`trqform` varchar(40) NOT NULL,
`trsform` varchar(40) NOT NULL,
`tgen` datetime NOT NULL,
`tterm` datetime,
`tstatus` tinyint(1) NOT NULL
) ENGINE=ARCHIVE COMMENT='ticket archive';
____SQL;
$result = $this->db->getConnection()->exec($sql);
$sql = <<<____SQL
CREATE TABLE IF NOT EXISTS `request_hist` (
`rqid` int(11) NOT NULL,
`rqtid` int(11) NOT NULL,
`rqsid` int(11) NOT NULL,
`rqdate` datetime NOT NULL,
`rqcode` tinyint(1) NOT NULL,
`rssid` int(11) NOT NULL,
`rsdate` datetime,
`rscode` tinyint(1)
) ENGINE=ARCHIVE COMMENT='request archive';
____SQL;
$result = $this->db->getConnection()->exec($sql);
$sql = <<<____SQL
CREATE TABLE IF NOT EXISTS `relay_hist` (
`rqid` int(5) NOT NULL,
`sdesc` varchar(40) NOT NULL,
`rqemail` varchar(40) NOT NULL,
`sid` int(11) NOT NULL,
`rlsid` int(11) NOT NULL,
`dcode` varchar(5) NOT NULL
) ENGINE=ARCHIVE COMMENT='relay archive';
____SQL;
$result = $this->db->getConnection()->exec($sql);
?>
Chopping it into individual queries fixes the problem.
practicegoodtheory at gmail dot com
19-Jun-2008 08:56
19-Jun-2008 08:56
On Windows, with Apache, it would not load php_pdo_mysql.dll until I put libmysql.dll in Apache's dll path (e.g. apache/bin)
rmottey at gmail dot com
09-Jan-2008 12:51
09-Jan-2008 12:51
I have been getting the error below when performing multiple queries within a single page.
Setting the attribute below did not seem to work for me.
So building on previous example i am initilizing my stmt variable on every query and a fetch all into an array. Seems to be working for me.
Error:
PDO Error 1.1: Array ( [0] => xxx[1] => yyy[2] => Lost connection to MySQL server during query )
Fix:
(PDO::setAttribute("PDO::MYSQL_ATTR_USE_BUFFERED_QUERY", true);)
<?
try {
$dbh = new PDO('mysql:host=xxx;port=xxx;dbname=xxx', 'xxx', 'xxx', array( PDO::ATTR_PERSISTENT => false));
$stmt = $dbh->prepare("CALL getname()");
// call the stored procedure
$stmt->execute();
// fetch all rows into an array.
$rows = $stmt->fetchAll();
foreach ($rows as $rs)
{
$id = $rs['id'];
}
//initilise the statement
unset($stmt);
$stmt = $dbh->prepare("call secondprocedure(?);");
$stmt->bindValue(1, $id);
if ( ! $stmt->execute() )
{
echo "PDO Error 1.1:\n";
print_r($stmt->errorInfo());
exit;
}
unset($stmt);
} catch (PDOException $e) {
print "Error!: " . $e->getMessage() . "<br/>";
die();
}
?>
marty at excudo dot net
17-Oct-2007 02:13
17-Oct-2007 02:13
Davey wrote:
> To use "PDO::MYSQL_ATTR_USE_BUFFERED_QUERY" you should call
> PDO::setAttribute("PDO::MYSQL_ATTR_USE_BUFFERED_QUERY", true);
>
>It will not work when passed into PDO::prepare()
>
> - Davey
Almost correct. It should be:
PDO::setAttribute(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY, true);
so, without the quotes.
otherwise it still won't work :)
bratwizard at yahoo dot com
22-Sep-2007 09:59
22-Sep-2007 09:59
> konrads dot smelkovs at gmail dot com
> 18-Jul-2007 03:39
> A note for the eager:
>> There is no way how to get returned row count from an executed prepared statement without fetching the rows.
Sure there is, just do something like this:
if ($sth = $pdo->prepare($sql)) {
$sth->execute($values);
$sth->fetch();
// get count of rows in result set
if ($sth_rc = $this->getDataset()->query('SELECT FOUND_ROWS()')) {
$row_count = $sth_rc->fetchColumn(0);
}
}
konrads dot smelkovs at gmail dot com
18-Jul-2007 12:39
18-Jul-2007 12:39
A note for the eager:
There is no way how to get returned row count from an executed prepared statement without fetching the rows.
davey at php dot net
06-Jun-2007 10:46
06-Jun-2007 10:46
To use "PDO::MYSQL_ATTR_USE_BUFFERED_QUERY" you should call
PDO::setAttribute("PDO::MYSQL_ATTR_USE_BUFFERED_QUERY", true);
It will not work when passed into PDO::prepare()
- Davey
dibakar at talash dot net
12-Sep-2006 08:31
12-Sep-2006 08:31
PDO is much better option for calling procedures, views or triggers of mysql 5.x versions from PHP instead of using mysqli extension. Following is a simple demo script which can help anybody on how to call and use mysql procedures through php
try {
$dbh = new PDO('mysql:host=xxx;port=xxx;dbname=xxx', 'xxx', 'xxx', array( PDO::ATTR_PERSISTENT => false));
$stmt = $dbh->prepare("CALL getname()");
// call the stored procedure
$stmt->execute();
echo "<B>outputting...</B><BR>";
while ($rs = $stmt->fetch(PDO::FETCH_OBJ)) {
echo "output: ".$rs->name."<BR>";
}
echo "<BR><B>".date("r")."</B>";
} catch (PDOException $e) {
print "Error!: " . $e->getMessage() . "<br/>";
die();
}