PDO_INFORMIX DSN
The SSL options are silently ignored in PHP 5.3.8, see https://bugs.php.net/bug.php?id=55870
Looks like it's addressed upstream, I just want to save others the hour and a half I just wasted :)
MySQL Functions (PDO_MYSQL)
Introdução
PDO_MYSQL é um driver que implementa a interface PHP Data Objects (PDO) para acesso do PHP ao MySQL 3.x, 4.x and 5.x.
PDO_MYSQL tem vantagens do nativo suporte a prepared statement presente no MySQL 4.1 e superior. Se você está usando um versão antiga da biblioteca do mysql client, PDO irá emular para você.
Aviso
Cuidado: Alguns tipos de table do MySQL (storage engines) não suportam transações. Quando escrevendo código para um banco de dados transacional onde o tipo de tabela não suporta transações, MySQL irá pretender que a transação foi inicializada com sucesso. Adicionalmente, qualquer DDL queries serão implicitamente aceitas sem pedir confirmação.
Constantes pré-definidas
As constantes abaixo são definidas por este driver, e somente estarão disponíveis quando esta extensão for compilada no PHP ou carregada dinamicamente em tempo de execução. Em adição, estas constantes especificas do drive somente devem ser usadas se você estive usando este drive. Usar atributos especificos do mysql com o driver postgree pode resultar em um funcionamento não esperado. PDO::getAttribute() deve ser usado para obter o atributo PDO_ATTR_DRIVER_NAME para se certificar do driver, se o seu código puder ser usado com vários drivers.
- PDO::MYSQL_ATTR_USE_BUFFERED_QUERY (integer)
-
Se este atributo é definido para TRUE em uma
PDOStatement, o driver MySQL irá usar a
versão bufferizada da MySQL API. Se você está escrevendo um código portável, você
deveria usar PDOStatement::fetchAll().
Exemplo #1 Forçando queries para ser bufferizadas no 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("my application only works with mysql; I should use \$stmt->fetchAll() instead");
}
?> - PDO::MYSQL_ATTR_LOCAL_INFILE (integer)
-
Enable LOAD LOCAL INFILE.
- PDO::MYSQL_ATTR_INIT_COMMAND (integer)
-
Comando para executar quando conectado ao servidor MySQL. Irá automaticamente ser reexecutado quando reconectar.
- PDO::MYSQL_ATTR_READ_DEFAULT_FILE (integer)
-
Lê opções do nomeado arquivo de opções ao invés do my.cnf.
- PDO::MYSQL_ATTR_READ_DEFAULT_GROUP (integer)
-
Lê opções do nomeado group para my.cnf ou o arquivo especificado com MYSQL_READ_DEFAULT_FILE.
- PDO::MYSQL_ATTR_MAX_BUFFER_SIZE (integer)
-
Tamanho máximo do buffer. Padrão é 1 MiB.
- PDO::MYSQL_ATTR_DIRECT_QUERY (integer)
-
Executa queries diretamente, não usa prepared statements.
Índice
- PDO_MYSQL DSN — Conectando a bancos de dados MySQL
add a note
User Contributed Notes
MySQL (PDO)
david at manifestwebdesign dot com
27-Oct-2011 02:22
curt at webmasterbond dot com
15-Apr-2011 05:54
Today's PHP snapshot now has SSL support for PDO. Follow the directions here ( http://dev.mysql.com/doc/refman/5.0/en/secure-create-certs.html ) to set up MySQL and then use the following connection options:
<?php
$pdo = new PDO(
'mysql:host=hostname;dbname=ssldb',
'username',
'password',
array(
PDO::MYSQL_ATTR_SSL_KEY =>'/path/to/client-key.pem',
PDO::MYSQL_ATTR_SSL_CERT=>'/path/to/client-cert.pem',
PDO::MYSQL_ATTR_SSL_CA =>'/path/to/ca-cert.pem'
)
);
?>
rgagnon24 at gmail dot com
01-Jun-2010 09:06
Note that the MySQL option PDO::MYSQL_ATTR_LOCAL_INFILE can only be set during the initial construction of your PDO object.
It is not supported by PDO::getAttribute() nor PDO::setAttribute() for MySQL PDO objects.
Davy Defaud
22-Apr-2009 12:30
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")
);
?>
brian at diamondsea dot com
25-Jul-2008 11:26
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 02:03
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 11:56
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 03:51
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!: " . $e->getMessage() . "<br/>";
die();
}
?>
marty at excudo dot net
17-Oct-2007 05:13
Davey wrote:
> To use "PDO::MYSQL_ATTR_USE_BUFFERED_QUERY" you should call
> PDO::setAttribute("PDO::MYSQL_ATTR_USE_BUFFERED_QUERY", true);
>
>It will not work when passed into PDO::prepare()
>
> - Davey
Almost correct. It should be:
PDO::setAttribute(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY, true);
so, without the quotes.
otherwise it still won't work :)
bratwizard at yahoo dot com
22-Sep-2007 12:59
> konrads dot smelkovs at gmail dot com
> 18-Jul-2007 03:39
> A note for the eager:
>> There is no way how to get returned row count from an executed prepared statement without fetching the rows.
Sure there is, just do something like this:
if ($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 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.
davey at php dot net
06-Jun-2007 01:46
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
11-Sep-2006 11:31
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();
}