<?php
namespace Illuminate\Database\Connectors;
use PDO;
class MySqlConnector extends Connector implements ConnectorInterface
{
/**
* Establish a database connection.
*
* @param array $config
* @return \PDO
*/
public function connect(array $config)
{
$dsn = $this->getDsn($config);
$options = $this->getOptions($config);
// We need to grab the PDO options that should be used while making the brand
// new connection instance. The PDO options control various aspects of the
// connection's behavior, and some might be specified by the developers.
$connection = $this->createConnection($dsn, $config, $options);
if (! empty($config['database'])) {
$connection->exec("use `{$config['database']}`;");
}
$this->configureIsolationLevel($connection, $config);
$this->configureEncoding($connection, $config);
// Next, we will check to see if a timezone has been specified in this config
// and if it has we will issue a statement to modify the timezone with the
// database. Setting this DB timezone is an optional configuration item.
$this->configureTimezone($connection, $config);
$this->setModes($connection, $config);
return $connection;
}
/**
* Set the connection transaction isolation level.
*
* @param \PDO $connection
* @param array $config
* @return void
*/
protected function configureIsolationLevel($connection, array $config)
{
if (! isset($config['isolation_level'])) {
return;
}
$connection->prepare(
"SET SESSION TRANSACTION ISOLATION LEVEL {$config['isolation_level']}"
)->execute();
}
/**
* Set the connection character set and collation.
*
* @param \PDO $connection
* @param array $config
* @return void|\PDO
*/
protected function configureEncoding($connection, array $config)
{
if (! isset($config['charset'])) {
return $connection;
}
$connection->prepare(
"set names '{$config['charset']}'".$this->getCollation($config)
)->execute();
}
/**
* Get the collation for the configuration.
*
* @param array $config
* @return string
*/
protected function getCollation(array $config)
{
return isset($config['collation']) ? " collate '{$config['collation']}'" : '';
}
/**
* Set the timezone on the connection.
*
* @param \PDO $connection
* @param array $config
* @return void
*/
protected function configureTimezone($connection, array $config)
{
if (isset($config['timezone'])) {
$connection->prepare('set time_zone="'.$config['timezone'].'"')->execute();
}
}
/**
* Create a DSN string from a configuration.
*
* Chooses socket or host/port based on the 'unix_socket' config value.
*
* @param array $config
* @return string
*/
protected function getDsn(array $config)
{
return $this->hasSocket($config)
? $this->getSocketDsn($config)
: $this->getHostDsn($config);
}
/**
* Determine if the given configuration array has a UNIX socket value.
*
* @param array $config
* @return bool
*/
protected function hasSocket(array $config)
{
return isset($config['unix_socket']) && ! empty($config['unix_socket']);
}
/**
* Get the DSN string for a socket configuration.
*
* @param array $config
* @return string
*/
protected function getSocketDsn(array $config)
{
return "mysql:unix_socket={$config['unix_socket']};dbname={$config['database']}";
}
/**
* Get the DSN string for a host / port configuration.
*
* @param array $config
* @return string
*/
protected function getHostDsn(array $config)
{
extract($config, EXTR_SKIP);
return isset($port)
? "mysql:host={$host};port={$port};dbname={$database}"
: "mysql:host={$host};dbname={$database}";
}
/**
* Set the modes for the connection.
*
* @param \PDO $connection
* @param array $config
* @return void
*/
protected function setModes(PDO $connection, array $config)
{
if (isset($config['modes'])) {
$this->setCustomModes($connection, $config);
} elseif (isset($config['strict'])) {
if ($config['strict']) {
$connection->prepare($this->strictMode($connection, $config))->execute();
} else {
$connection->prepare("set session sql_mode='NO_ENGINE_SUBSTITUTION'")->execute();
}
}
}
/**
* Set the custom modes on the connection.
*
* @param \PDO $connection
* @param array $config
* @return void
*/
protected function setCustomModes(PDO $connection, array $config)
{
$modes = implode(',', $config['modes']);
$connection->prepare("set session sql_mode='{$modes}'")->execute();
}
/**
* Get the query to enable strict mode.
*
* @param \PDO $connection
* @param array $config
* @return string
*/
protected function strictMode(PDO $connection, $config)
{
$version = $config['version'] ?? $connection->getAttribute(PDO::ATTR_SERVER_VERSION);
if (version_compare($version, '8.0.11') >= 0) {
return "set session sql_mode='ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION'";
}
return "set session sql_mode='ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION'";
}
}