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<?php
namespace Doctrine\DBAL\Driver\Mysqli;
use Doctrine\DBAL\Driver\FetchUtils;
use Doctrine\DBAL\Driver\Mysqli\Exception\ConnectionError;
use Doctrine\DBAL\Driver\Mysqli\Exception\FailedReadingStreamOffset;
use Doctrine\DBAL\Driver\Mysqli\Exception\StatementError;
use Doctrine\DBAL\Driver\Mysqli\Exception\UnknownType;
use Doctrine\DBAL\Driver\Result;
use Doctrine\DBAL\Driver\Statement as StatementInterface;
use Doctrine\DBAL\Driver\StatementIterator;
use Doctrine\DBAL\Exception\InvalidArgumentException;
use Doctrine\DBAL\FetchMode;
use Doctrine\DBAL\ParameterType;
use IteratorAggregate;
use mysqli;
use mysqli_stmt;
use PDO;
use function array_combine;
use function array_fill;
use function assert;
use function count;
use function feof;
use function fread;
use function get_resource_type;
use function is_array;
use function is_int;
use function is_resource;
use function sprintf;
use function str_repeat;
/**
* @deprecated Use {@link Statement} instead
*/
class MysqliStatement implements IteratorAggregate, StatementInterface, Result
{
/** @var string[] */
protected static $_paramTypeMap = [
ParameterType::ASCII => 's',
ParameterType::STRING => 's',
ParameterType::BINARY => 's',
ParameterType::BOOLEAN => 'i',
ParameterType::NULL => 's',
ParameterType::INTEGER => 'i',
ParameterType::LARGE_OBJECT => 'b',
];
/** @var mysqli */
protected $_conn;
/** @var mysqli_stmt */
protected $_stmt;
/** @var string[]|false|null */
protected $_columnNames;
/** @var mixed[] */
protected $_rowBindedValues = [];
/** @var mixed[] */
protected $_bindedValues;
/** @var string */
protected $types;
/**
* Contains ref values for bindValue().
*
* @var mixed[]
*/
protected $_values = [];
/** @var int */
protected $_defaultFetchMode = FetchMode::MIXED;
/**
* Indicates whether the statement is in the state when fetching results is possible
*
* @var bool
*/
private $result = false;
/**
* @internal The statement can be only instantiated by its driver connection.
*
* @param string $prepareString
*
* @throws MysqliException
*/
public function __construct(mysqli $conn, $prepareString)
{
$this->_conn = $conn;
$stmt = $conn->prepare($prepareString);
if ($stmt === false) {
throw ConnectionError::new($this->_conn);
}
$this->_stmt = $stmt;
$paramCount = $this->_stmt->param_count;
if (0 >= $paramCount) {
return;
}
$this->types = str_repeat('s', $paramCount);
$this->_bindedValues = array_fill(1, $paramCount, null);
}
/**
* {@inheritdoc}
*/
public function bindParam($param, &$variable, $type = ParameterType::STRING, $length = null)
{
assert(is_int($param));
if (! isset(self::$_paramTypeMap[$type])) {
throw UnknownType::new($type);
}
$this->_bindedValues[$param] =& $variable;
$this->types[$param - 1] = self::$_paramTypeMap[$type];
return true;
}
/**
* {@inheritdoc}
*/
public function bindValue($param, $value, $type = ParameterType::STRING)
{
assert(is_int($param));
if (! isset(self::$_paramTypeMap[$type])) {
throw UnknownType::new($type);
}
$this->_values[$param] = $value;
$this->_bindedValues[$param] =& $this->_values[$param];
$this->types[$param - 1] = self::$_paramTypeMap[$type];
return true;
}
/**
* {@inheritdoc}
*/
public function execute($params = null)
{
if ($this->_bindedValues !== null) {
if ($params !== null) {
if (! $this->bindUntypedValues($params)) {
throw StatementError::new($this->_stmt);
}
} else {
$this->bindTypedParameters();
}
}
if (! $this->_stmt->execute()) {
throw StatementError::new($this->_stmt);
}
if ($this->_columnNames === null) {
$meta = $this->_stmt->result_metadata();
if ($meta !== false) {
$fields = $meta->fetch_fields();
assert(is_array($fields));
$columnNames = [];
foreach ($fields as $col) {
$columnNames[] = $col->name;
}
$meta->free();
$this->_columnNames = $columnNames;
} else {
$this->_columnNames = false;
}
}
if ($this->_columnNames !== false) {
// Store result of every execution which has it. Otherwise it will be impossible
// to execute a new statement in case if the previous one has non-fetched rows
// @link http://dev.mysql.com/doc/refman/5.7/en/commands-out-of-sync.html
$this->_stmt->store_result();
// Bind row values _after_ storing the result. Otherwise, if mysqli is compiled with libmysql,
// it will have to allocate as much memory as it may be needed for the given column type
// (e.g. for a LONGBLOB column it's 4 gigabytes)
// @link https://bugs.php.net/bug.php?id=51386#1270673122
//
// Make sure that the values are bound after each execution. Otherwise, if closeCursor() has been
// previously called on the statement, the values are unbound making the statement unusable.
//
// It's also important that row values are bound after _each_ call to store_result(). Otherwise,
// if mysqli is compiled with libmysql, subsequently fetched string values will get truncated
// to the length of the ones fetched during the previous execution.
$this->_rowBindedValues = array_fill(0, count($this->_columnNames), null);
$refs = [];
foreach ($this->_rowBindedValues as $key => &$value) {
$refs[$key] =& $value;
}
if (! $this->_stmt->bind_result(...$refs)) {
throw StatementError::new($this->_stmt);
}
}
$this->result = true;
return true;
}
/**
* Binds parameters with known types previously bound to the statement
*/
private function bindTypedParameters(): void
{
$streams = $values = [];
$types = $this->types;
foreach ($this->_bindedValues as $parameter => $value) {
assert(is_int($parameter));
if (! isset($types[$parameter - 1])) {
$types[$parameter - 1] = static::$_paramTypeMap[ParameterType::STRING];
}
if ($types[$parameter - 1] === static::$_paramTypeMap[ParameterType::LARGE_OBJECT]) {
if (is_resource($value)) {
if (get_resource_type($value) !== 'stream') {
throw new InvalidArgumentException(
'Resources passed with the LARGE_OBJECT parameter type must be stream resources.'
);
}
$streams[$parameter] = $value;
$values[$parameter] = null;
continue;
}
$types[$parameter - 1] = static::$_paramTypeMap[ParameterType::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 MysqliException
*/
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);
}
}
}
}
/**
* Binds a array of values to bound parameters.
*
* @param mixed[] $values
*
* @return bool
*/
private function bindUntypedValues(array $values)
{
$params = [];
$types = str_repeat('s', count($values));
foreach ($values as &$v) {
$params[] =& $v;
}
return $this->_stmt->bind_param($types, ...$params);
}
/**
* @return mixed[]|false|null
*/
private function _fetch()
{
$ret = $this->_stmt->fetch();
if ($ret === true) {
$values = [];
foreach ($this->_rowBindedValues as $v) {
$values[] = $v;
}
return $values;
}
return $ret;
}
/**
* {@inheritdoc}
*
* @deprecated Use fetchNumeric(), fetchAssociative() or fetchOne() instead.
*/
public function fetch($fetchMode = null, $cursorOrientation = PDO::FETCH_ORI_NEXT, $cursorOffset = 0)
{
// do not try fetching from the statement if it's not expected to contain result
// in order to prevent exceptional situation
if (! $this->result) {
return false;
}
$fetchMode = $fetchMode ?: $this->_defaultFetchMode;
if ($fetchMode === FetchMode::COLUMN) {
return $this->fetchColumn();
}
$values = $this->_fetch();
if ($values === null) {
return false;
}
if ($values === false) {
throw StatementError::new($this->_stmt);
}
if ($fetchMode === FetchMode::NUMERIC) {
return $values;
}
assert(is_array($this->_columnNames));
$assoc = array_combine($this->_columnNames, $values);
assert(is_array($assoc));
switch ($fetchMode) {
case FetchMode::ASSOCIATIVE:
return $assoc;
case FetchMode::MIXED:
return $assoc + $values;
case FetchMode::STANDARD_OBJECT:
return (object) $assoc;
default:
throw new MysqliException(sprintf("Unknown fetch type '%s'", $fetchMode));
}
}
/**
* {@inheritdoc}
*
* @deprecated Use fetchAllNumeric(), fetchAllAssociative() or fetchFirstColumn() instead.
*/
public function fetchAll($fetchMode = null, $fetchArgument = null, $ctorArgs = null)
{
$fetchMode = $fetchMode ?: $this->_defaultFetchMode;
$rows = [];
if ($fetchMode === FetchMode::COLUMN) {
while (($row = $this->fetchColumn()) !== false) {
$rows[] = $row;
}
} else {
while (($row = $this->fetch($fetchMode)) !== false) {
$rows[] = $row;
}
}
return $rows;
}
/**
* {@inheritdoc}
*
* @deprecated Use fetchOne() instead.
*/
public function fetchColumn($columnIndex = 0)
{
$row = $this->fetch(FetchMode::NUMERIC);
if ($row === false) {
return false;
}
return $row[$columnIndex] ?? null;
}
/**
* {@inheritdoc}
*
* @deprecated The error information is available via exceptions.
*/
public function fetchNumeric()
{
// do not try fetching from the statement if it's not expected to contain the result
// in order to prevent exceptional situation
if (! $this->result) {
return false;
}
$values = $this->_fetch();
if ($values === null) {
return false;
}
if ($values === false) {
throw StatementError::new($this->_stmt);
}
return $values;
}
/**
* {@inheritDoc}
*/
public function fetchAssociative()
{
$values = $this->fetchNumeric();
if ($values === false) {
return false;
}
assert(is_array($this->_columnNames));
$row = array_combine($this->_columnNames, $values);
assert(is_array($row));
return $row;
}
/**
* {@inheritdoc}
*/
public function fetchOne()
{
return FetchUtils::fetchOne($this);
}
/**
* {@inheritdoc}
*/
public function fetchAllNumeric(): array
{
return FetchUtils::fetchAllNumeric($this);
}
/**
* {@inheritdoc}
*/
public function fetchAllAssociative(): array
{
return FetchUtils::fetchAllAssociative($this);
}
/**
* {@inheritdoc}
*/
public function fetchFirstColumn(): array
{
return FetchUtils::fetchFirstColumn($this);
}
/**
* {@inheritdoc}
*/
public function errorCode()
{
return $this->_stmt->errno;
}
/**
* {@inheritdoc}
*
* @deprecated The error information is available via exceptions.
*
* @return string
*/
public function errorInfo()
{
return $this->_stmt->error;
}
/**
* {@inheritdoc}
*
* @deprecated Use free() instead.
*/
public function closeCursor()
{
$this->free();
return true;
}
/**
* {@inheritdoc}
*/
public function rowCount()
{
if ($this->_columnNames === false) {
return $this->_stmt->affected_rows;
}
return $this->_stmt->num_rows;
}
/**
* {@inheritdoc}
*/
public function columnCount()
{
return $this->_stmt->field_count;
}
public function free(): void
{
$this->_stmt->free_result();
$this->result = false;
}
/**
* {@inheritdoc}
*
* @deprecated Use one of the fetch- or iterate-related methods.
*/
public function setFetchMode($fetchMode, $arg2 = null, $arg3 = null)
{
$this->_defaultFetchMode = $fetchMode;
return true;
}
/**
* {@inheritdoc}
*
* @deprecated Use iterateNumeric(), iterateAssociative() or iterateColumn() instead.
*/
public function getIterator()
{
return new StatementIterator($this);
}
}