Your IP : 216.73.216.43
<?php
namespace Laminas\Db\Adapter\Platform;
use Laminas\Db\Adapter\Driver\DriverInterface;
use Laminas\Db\Adapter\Driver\Pdo;
use Laminas\Db\Adapter\Driver\Pgsql;
use Laminas\Db\Adapter\Exception;
use PgSql\Connection as PgSqlConnection;
use function get_resource_type;
use function implode;
use function in_array;
use function is_resource;
use function pg_escape_string;
use function str_replace;
class Postgresql extends AbstractPlatform
{
/**
* Overrides value from AbstractPlatform to use proper escaping for Postgres
*
* @var string
*/
protected $quoteIdentifierTo = '""';
/** @var null|resource|\PDO|Pdo\Pdo|Pgsql\Pgsql */
protected $driver;
/** @var string[] */
private $knownPgsqlResources = [
'pgsql link',
'pgsql link persistent',
];
/**
* @param null|\Laminas\Db\Adapter\Driver\Pgsql\Pgsql|\Laminas\Db\Adapter\Driver\Pdo\Pdo|resource|\PDO $driver
*/
public function __construct($driver = null)
{
if ($driver) {
$this->setDriver($driver);
}
}
/**
* @param Pgsql\Pgsql|Pdo\Pdo|resource|\PDO $driver
* @return $this Provides a fluent interface
* @throws Exception\InvalidArgumentException
*/
public function setDriver($driver)
{
if (
$driver instanceof Pgsql\Pgsql
|| ($driver instanceof Pdo\Pdo && $driver->getDatabasePlatformName() === 'Postgresql')
|| $driver instanceof PgSqlConnection // PHP 8.1+
|| (is_resource($driver) && in_array(get_resource_type($driver), $this->knownPgsqlResources, true))
|| ($driver instanceof \PDO && $driver->getAttribute(\PDO::ATTR_DRIVER_NAME) === 'pgsql')
) {
$this->driver = $driver;
return $this;
}
throw new Exception\InvalidArgumentException(
'$driver must be a Pgsql or Postgresql PDO Laminas\Db\Adapter\Driver, pgsql link resource'
. ' or Postgresql PDO instance'
);
}
/**
* {@inheritDoc}
*/
public function getName()
{
return 'PostgreSQL';
}
/**
* {@inheritDoc}
*/
public function quoteIdentifierChain($identifierChain)
{
return '"' . implode('"."', (array) str_replace('"', '""', $identifierChain)) . '"';
}
/**
* {@inheritDoc}
*/
public function quoteValue($value)
{
$quotedViaDriverValue = $this->quoteViaDriver($value);
return $quotedViaDriverValue ?? 'E' . parent::quoteValue($value);
}
/**
* {@inheritDoc}
*
* @param scalar $value
* @return string
*/
public function quoteTrustedValue($value)
{
$quotedViaDriverValue = $this->quoteViaDriver($value);
if ($quotedViaDriverValue === null) {
return 'E' . parent::quoteTrustedValue($value);
}
return $quotedViaDriverValue;
}
/**
* @param string $value
* @return string|null
*/
protected function quoteViaDriver($value)
{
$resource = $this->driver instanceof DriverInterface
? $this->driver->getConnection()->getResource()
: $this->driver;
if ($resource instanceof PgSqlConnection || is_resource($resource)) {
return '\'' . pg_escape_string($resource, $value) . '\'';
}
if ($resource instanceof \PDO) {
return $resource->quote($value);
}
return null;
}
}