PDO Drivers
PHP Manual

MySQL Functions (PDO_MYSQL)

Introducere

PDO_MYSQL is a driver that implements the PHP Data Objects (PDO) interface to enable access from PHP to MySQL 3.x, 4.x and 5.x databases.

PDO_MYSQL will take advantage of native prepared statement support present in MySQL 4.1 and higher. If you're using an older version of the mysql client libraries, PDO will emulate them for you.

Avertizare

Beware: Some MySQL table types (storage engines) do not support transactions. When writing transactional database code using a table type that does not support transactions, MySQL will pretend that a transaction was initiated successfully. In addition, any DDL queries issued will implicitly commit any pending transactions.

Constante predefinite

Constantele de mai jos sunt definite de acest driver și vor fi disponibile doar când această extensie a fost compilată în interiorul PHP, sau a fost încărcată dinamic în timpul rulării. În plus, aceste constante specifice driver-ului trebuie utilizate numai dacă utilizați acest driver. Utilizarea atributelor specifice unui driver cu un alt driver poate rezulta într-un comportament imprevizibil. PDO::getAttribute() poate fi utilizată pentru a obține atributul PDO_ATTR_DRIVER_NAME , pentru a verifica driver-ul în caz că codul-sursă al dumneavoastră poate rula cu mai multe driver-e.

PDO::MYSQL_ATTR_USE_BUFFERED_QUERY ( integer )
If this attribute is set to TRUE on a PDOStatement, the MySQL driver will use the buffered versions of the MySQL API. If you're writing portable code, you should use PDOStatement::fetchAll() instead.

Example #3 Forcing queries to be buffered in 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 )

Command to execute when connecting to the MySQL server. Will automatically be re-executed when reconnecting.

PDO::MYSQL_ATTR_READ_DEFAULT_FILE ( integer )

Read options from the named option file instead of from my.cnf. This option is not available if mysqlnd is used, because mysqlnd does not read the mysql configuration files.

PDO::MYSQL_ATTR_READ_DEFAULT_GROUP ( integer )

Read options from the named group from my.cnf or the file specified with MYSQL_READ_DEFAULT_FILE. This option is not available if mysqlnd is used, because mysqlnd does not read the mysql configuration files.

PDO::MYSQL_ATTR_MAX_BUFFER_SIZE ( integer )

Maximum buffer size. Defaults to 1 MiB.

PDO::MYSQL_ATTR_DIRECT_QUERY ( integer )

Perform direct queries, don't use prepared statements.

Cuprins


PDO Drivers
PHP Manual