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<?php
/*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the MIT license. For more information, see
* <http://www.doctrine-project.org>.
*/
namespace Doctrine\DBAL\Driver\Mysqli;
use Doctrine\DBAL\Driver\Statement;
use PDO;
/**
* @author Kim Hemsø Rasmussen <kimhemsoe@gmail.com>
*/
class MysqliStatement implements \IteratorAggregate, Statement
{
/**
* @var array
*/
protected static $_paramTypeMap = array(
PDO::PARAM_STR => 's',
PDO::PARAM_BOOL => 'i',
PDO::PARAM_NULL => 's',
PDO::PARAM_INT => 'i',
PDO::PARAM_LOB => 's' // TODO Support LOB bigger then max package size.
);
/**
* @var \mysqli
*/
protected $_conn;
/**
* @var \mysqli_stmt
*/
protected $_stmt;
/**
* @var null|boolean|array
*/
protected $_columnNames;
/**
* @var null|array
*/
protected $_rowBindedValues;
/**
* @var array
*/
protected $_bindedValues;
/**
* @var string
*/
protected $types;
/**
* Contains ref values for bindValue().
*
* @var array
*/
protected $_values = array();
/**
* @var integer
*/
protected $_defaultFetchMode = PDO::FETCH_BOTH;
/**
* Indicates whether the statement is in the state when fetching results is possible
*
* @var bool
*/
private $result = false;
/**
* @param \mysqli $conn
* @param string $prepareString
*
* @throws \Doctrine\DBAL\Driver\Mysqli\MysqliException
*/
public function __construct(\mysqli $conn, $prepareString)
{
$this->_conn = $conn;
$this->_stmt = $conn->prepare($prepareString);
if (false === $this->_stmt) {
throw new MysqliException($this->_conn->error, $this->_conn->sqlstate, $this->_conn->errno);
}
$paramCount = $this->_stmt->param_count;
if (0 < $paramCount) {
$this->types = str_repeat('s', $paramCount);
$this->_bindedValues = array_fill(1, $paramCount, null);
}
}
/**
* {@inheritdoc}
*/
public function bindParam($column, &$variable, $type = null, $length = null)
{
if (null === $type) {
$type = 's';
} else {
if (isset(self::$_paramTypeMap[$type])) {
$type = self::$_paramTypeMap[$type];
} else {
throw new MysqliException("Unknown type: '{$type}'");
}
}
$this->_bindedValues[$column] =& $variable;
$this->types[$column - 1] = $type;
return true;
}
/**
* {@inheritdoc}
*/
public function bindValue($param, $value, $type = null)
{
if (null === $type) {
$type = 's';
} else {
if (isset(self::$_paramTypeMap[$type])) {
$type = self::$_paramTypeMap[$type];
} else {
throw new MysqliException("Unknown type: '{$type}'");
}
}
$this->_values[$param] = $value;
$this->_bindedValues[$param] =& $this->_values[$param];
$this->types[$param - 1] = $type;
return true;
}
/**
* {@inheritdoc}
*/
public function execute($params = null)
{
if (null !== $this->_bindedValues) {
if (null !== $params) {
if ( ! $this->_bindValues($params)) {
throw new MysqliException($this->_stmt->error, $this->_stmt->errno);
}
} else {
if (!call_user_func_array(array($this->_stmt, 'bind_param'), array($this->types) + $this->_bindedValues)) {
throw new MysqliException($this->_stmt->error, $this->_stmt->sqlstate, $this->_stmt->errno);
}
}
}
if ( ! $this->_stmt->execute()) {
throw new MysqliException($this->_stmt->error, $this->_stmt->sqlstate, $this->_stmt->errno);
}
if (null === $this->_columnNames) {
$meta = $this->_stmt->result_metadata();
if (false !== $meta) {
$columnNames = array();
foreach ($meta->fetch_fields() as $col) {
$columnNames[] = $col->name;
}
$meta->free();
$this->_columnNames = $columnNames;
} else {
$this->_columnNames = false;
}
}
if (false !== $this->_columnNames) {
// 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 field 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);
$refs = array();
foreach ($this->_rowBindedValues as $key => &$value) {
$refs[$key] =& $value;
}
if (!call_user_func_array(array($this->_stmt, 'bind_result'), $refs)) {
throw new MysqliException($this->_stmt->error, $this->_stmt->sqlstate, $this->_stmt->errno);
}
}
$this->result = true;
return true;
}
/**
* Binds a array of values to bound parameters.
*
* @param array $values
*
* @return boolean
*/
private function _bindValues($values)
{
$params = array();
$types = str_repeat('s', count($values));
$params[0] = $types;
foreach ($values as &$v) {
$params[] =& $v;
}
return call_user_func_array(array($this->_stmt, 'bind_param'), $params);
}
/**
* @return boolean|array
*/
private function _fetch()
{
$ret = $this->_stmt->fetch();
if (true === $ret) {
$values = array();
foreach ($this->_rowBindedValues as $v) {
$values[] = $v;
}
return $values;
}
return $ret;
}
/**
* {@inheritdoc}
*/
public function fetch($fetchMode = null)
{
// 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;
}
$values = $this->_fetch();
if (null === $values) {
return false;
}
if (false === $values) {
throw new MysqliException($this->_stmt->error, $this->_stmt->sqlstate, $this->_stmt->errno);
}
$fetchMode = $fetchMode ?: $this->_defaultFetchMode;
switch ($fetchMode) {
case PDO::FETCH_NUM:
return $values;
case PDO::FETCH_ASSOC:
return array_combine($this->_columnNames, $values);
case PDO::FETCH_BOTH:
$ret = array_combine($this->_columnNames, $values);
$ret += $values;
return $ret;
default:
throw new MysqliException("Unknown fetch type '{$fetchMode}'");
}
}
/**
* {@inheritdoc}
*/
public function fetchAll($fetchMode = null)
{
$fetchMode = $fetchMode ?: $this->_defaultFetchMode;
$rows = array();
if (PDO::FETCH_COLUMN == $fetchMode) {
while (($row = $this->fetchColumn()) !== false) {
$rows[] = $row;
}
} else {
while (($row = $this->fetch($fetchMode)) !== false) {
$rows[] = $row;
}
}
return $rows;
}
/**
* {@inheritdoc}
*/
public function fetchColumn($columnIndex = 0)
{
$row = $this->fetch(PDO::FETCH_NUM);
if (false === $row) {
return false;
}
return isset($row[$columnIndex]) ? $row[$columnIndex] : null;
}
/**
* {@inheritdoc}
*/
public function errorCode()
{
return $this->_stmt->errno;
}
/**
* {@inheritdoc}
*/
public function errorInfo()
{
return $this->_stmt->error;
}
/**
* {@inheritdoc}
*/
public function closeCursor()
{
$this->_stmt->free_result();
$this->result = false;
return true;
}
/**
* {@inheritdoc}
*/
public function rowCount()
{
if (false === $this->_columnNames) {
return $this->_stmt->affected_rows;
}
return $this->_stmt->num_rows;
}
/**
* {@inheritdoc}
*/
public function columnCount()
{
return $this->_stmt->field_count;
}
/**
* {@inheritdoc}
*/
public function setFetchMode($fetchMode, $arg2 = null, $arg3 = null)
{
$this->_defaultFetchMode = $fetchMode;
return true;
}
/**
* {@inheritdoc}
*/
public function getIterator()
{
$data = $this->fetchAll();
return new \ArrayIterator($data);
}
}
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