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Statement.php
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Statement.php
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<?php
declare(strict_types=1);
namespace Doctrine\DBAL\Driver\Mysqli;
use Doctrine\DBAL\Driver\Exception;
use Doctrine\DBAL\Driver\Mysqli\Exception\FailedReadingStreamOffset;
use Doctrine\DBAL\Driver\Mysqli\Exception\NonStreamResourceUsedAsLargeObject;
use Doctrine\DBAL\Driver\Mysqli\Exception\StatementError;
use Doctrine\DBAL\Driver\Statement as StatementInterface;
use Doctrine\DBAL\ParameterType;
use mysqli_sql_exception;
use mysqli_stmt;
use function array_fill;
use function assert;
use function count;
use function feof;
use function fread;
use function get_resource_type;
use function is_int;
use function is_resource;
use function str_repeat;
final class Statement implements StatementInterface
{
private const PARAMETER_TYPE_STRING = 's';
private const PARAMETER_TYPE_INTEGER = 'i';
private const PARAMETER_TYPE_BINARY = 'b';
/** @var mixed[] */
private array $boundValues;
private string $types;
/**
* Contains ref values for bindValue().
*
* @var mixed[]
*/
private array $values = [];
/**
* @internal The statement can be only instantiated by its driver connection.
*/
public function __construct(private readonly mysqli_stmt $stmt)
{
$paramCount = $this->stmt->param_count;
$this->types = str_repeat(self::PARAMETER_TYPE_STRING, $paramCount);
$this->boundValues = array_fill(1, $paramCount, null);
}
public function bindParam(
int|string $param,
mixed &$variable,
ParameterType $type,
?int $length = null
): void {
assert(is_int($param));
$this->types[$param - 1] = $this->convertParameterType($type);
$this->boundValues[$param] =& $variable;
}
public function bindValue(int|string $param, mixed $value, ParameterType $type): void
{
assert(is_int($param));
$this->types[$param - 1] = $this->convertParameterType($type);
$this->values[$param] = $value;
$this->boundValues[$param] =& $this->values[$param];
}
public function execute(): Result
{
if (count($this->boundValues) > 0) {
$this->bindParameters();
}
try {
if (! $this->stmt->execute()) {
throw StatementError::new($this->stmt);
}
} catch (mysqli_sql_exception $e) {
throw StatementError::upcast($e);
}
return new Result($this->stmt);
}
/**
* Binds parameters with known types previously bound to the statement
*
* @throws Exception
*/
private function bindParameters(): void
{
$streams = $values = [];
$types = $this->types;
foreach ($this->boundValues as $parameter => $value) {
assert(is_int($parameter));
if (! isset($types[$parameter - 1])) {
$types[$parameter - 1] = self::PARAMETER_TYPE_STRING;
}
if ($types[$parameter - 1] === self::PARAMETER_TYPE_BINARY) {
if (is_resource($value)) {
if (get_resource_type($value) !== 'stream') {
throw NonStreamResourceUsedAsLargeObject::new($parameter);
}
$streams[$parameter] = $value;
$values[$parameter] = null;
continue;
}
$types[$parameter - 1] = self::PARAMETER_TYPE_STRING;
}
$values[$parameter] = $value;
}
if (! $this->stmt->bind_param($types, ...$values)) {
throw StatementError::new($this->stmt);
}
$this->sendLongData($streams);
}
/**
* Handle $this->_longData after regular query parameters have been bound
*
* @param array<int, resource> $streams
*
* @throws Exception
*/
private function sendLongData(array $streams): void
{
foreach ($streams as $paramNr => $stream) {
while (! feof($stream)) {
$chunk = fread($stream, 8192);
if ($chunk === false) {
throw FailedReadingStreamOffset::new($paramNr);
}
if (! $this->stmt->send_long_data($paramNr - 1, $chunk)) {
throw StatementError::new($this->stmt);
}
}
}
}
private function convertParameterType(ParameterType $type): string
{
return match ($type) {
ParameterType::NULL,
ParameterType::STRING,
ParameterType::ASCII,
ParameterType::BINARY => self::PARAMETER_TYPE_STRING,
ParameterType::INTEGER,
ParameterType::BOOLEAN => self::PARAMETER_TYPE_INTEGER,
ParameterType::LARGE_OBJECT => self::PARAMETER_TYPE_BINARY,
};
}
}