415 lines
11 KiB
PHP
415 lines
11 KiB
PHP
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<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Db
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* @subpackage Statement
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* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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/**
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* @see Zend_Db_Statement
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*/
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require_once 'Zend/Db/Statement.php';
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/**
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* Extends for Microsoft SQL Server Driver for PHP
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*
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* @category Zend
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* @package Zend_Db
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* @subpackage Statement
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* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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class Zend_Db_Statement_Sqlsrv extends Zend_Db_Statement
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{
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/**
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* The connection_stmt object.
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*/
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protected $_stmt;
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/**
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* The connection_stmt object original string.
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*/
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protected $_originalSQL;
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/**
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* Column names.
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*/
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protected $_keys;
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/**
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* Query executed
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*/
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protected $_executed = false;
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/**
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* Prepares statement handle
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*
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* @param string $sql
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* @return void
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* @throws Zend_Db_Statement_Sqlsrv_Exception
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*/
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protected function _prepare($sql)
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{
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$connection = $this->_adapter->getConnection();
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$this->_stmt = sqlsrv_prepare($connection, $sql);
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if (!$this->_stmt) {
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require_once 'Zend/Db/Statement/Sqlsrv/Exception.php';
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throw new Zend_Db_Statement_Sqlsrv_Exception(sqlsrv_errors());
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}
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$this->_originalSQL = $sql;
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}
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/**
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* Binds a parameter to the specified variable name.
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*
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* @param mixed $parameter Name the parameter, either integer or string.
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* @param mixed $variable Reference to PHP variable containing the value.
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* @param mixed $type OPTIONAL Datatype of SQL parameter.
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* @param mixed $length OPTIONAL Length of SQL parameter.
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* @param mixed $options OPTIONAL Other options.
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* @return bool
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* @throws Zend_Db_Statement_Exception
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*/
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protected function _bindParam($parameter, &$variable, $type = null, $length = null, $options = null)
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{
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//Sql server doesn't support bind by name
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return true;
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}
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/**
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* Closes the cursor, allowing the statement to be executed again.
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*
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* @return bool
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*/
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public function closeCursor()
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{
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if (!$this->_stmt) {
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return false;
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}
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sqlsrv_free_stmt($this->_stmt);
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$this->_stmt = false;
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return true;
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}
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/**
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* Returns the number of columns in the result set.
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* Returns null if the statement has no result set metadata.
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*
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* @return int The number of columns.
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*/
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public function columnCount()
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{
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if ($this->_stmt && $this->_executed) {
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return sqlsrv_num_fields($this->_stmt);
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}
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return 0;
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}
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/**
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* Retrieves the error code, if any, associated with the last operation on
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* the statement handle.
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*
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* @return string error code.
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*/
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public function errorCode()
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{
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if (!$this->_stmt) {
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return false;
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}
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$error = sqlsrv_errors();
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if (!$error) {
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return false;
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}
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return $error[0]['code'];
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}
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/**
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* Retrieves an array of error information, if any, associated with the
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* last operation on the statement handle.
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*
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* @return array
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*/
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public function errorInfo()
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{
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if (!$this->_stmt) {
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return false;
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}
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$error = sqlsrv_errors();
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if (!$error) {
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return false;
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}
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return array(
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$error[0]['code'],
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$error[0]['message'],
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);
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}
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/**
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* Executes a prepared statement.
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*
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* @param array $params OPTIONAL Values to bind to parameter placeholders.
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* @return bool
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* @throws Zend_Db_Statement_Exception
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*/
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public function _execute(array $params = null)
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{
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$connection = $this->_adapter->getConnection();
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if (!$this->_stmt) {
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return false;
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}
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if ($params !== null) {
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if (!is_array($params)) {
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$params = array($params);
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}
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$error = false;
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// make all params passed by reference
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$params_ = array();
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$temp = array();
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$i = 1;
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foreach ($params as $param) {
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$temp[$i] = $param;
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$params_[] = &$temp[$i];
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$i++;
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}
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$params = $params_;
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}
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$this->_stmt = sqlsrv_query($connection, $this->_originalSQL, $params);
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if (!$this->_stmt) {
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require_once 'Zend/Db/Statement/Sqlsrv/Exception.php';
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throw new Zend_Db_Statement_Sqlsrv_Exception(sqlsrv_errors());
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}
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$this->_executed = true;
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return (!$this->_stmt);
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}
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/**
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* Fetches a row from the result set.
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*
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* @param int $style OPTIONAL Fetch mode for this fetch operation.
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* @param int $cursor OPTIONAL Absolute, relative, or other.
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* @param int $offset OPTIONAL Number for absolute or relative cursors.
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* @return mixed Array, object, or scalar depending on fetch mode.
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* @throws Zend_Db_Statement_Exception
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*/
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public function fetch($style = null, $cursor = null, $offset = null)
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{
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if (!$this->_stmt) {
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return false;
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}
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if (null === $style) {
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$style = $this->_fetchMode;
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}
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$values = sqlsrv_fetch_array($this->_stmt, SQLSRV_FETCH_ASSOC);
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if (!$values && (null !== $error = sqlsrv_errors())) {
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require_once 'Zend/Db/Statement/Sqlsrv/Exception.php';
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throw new Zend_Db_Statement_Sqlsrv_Exception($error);
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}
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if (null === $values) {
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return null;
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}
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if (!$this->_keys) {
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foreach ($values as $key => $value) {
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$this->_keys[] = $this->_adapter->foldCase($key);
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}
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}
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$values = array_values($values);
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$row = false;
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switch ($style) {
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case Zend_Db::FETCH_NUM:
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$row = $values;
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break;
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case Zend_Db::FETCH_ASSOC:
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$row = array_combine($this->_keys, $values);
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break;
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case Zend_Db::FETCH_BOTH:
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$assoc = array_combine($this->_keys, $values);
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$row = array_merge($values, $assoc);
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break;
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case Zend_Db::FETCH_OBJ:
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$row = (object) array_combine($this->_keys, $values);
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break;
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case Zend_Db::FETCH_BOUND:
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$assoc = array_combine($this->_keys, $values);
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$row = array_merge($values, $assoc);
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$row = $this->_fetchBound($row);
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break;
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default:
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require_once 'Zend/Db/Statement/Sqlsrv/Exception.php';
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throw new Zend_Db_Statement_Sqlsrv_Exception("Invalid fetch mode '$style' specified");
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break;
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}
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return $row;
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}
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/**
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* Returns a single column from the next row of a result set.
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*
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* @param int $col OPTIONAL Position of the column to fetch.
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* @return string
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* @throws Zend_Db_Statement_Exception
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*/
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public function fetchColumn($col = 0)
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{
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if (!$this->_stmt) {
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return false;
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}
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if (!sqlsrv_fetch($this->_stmt)) {
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if (null !== $error = sqlsrv_errors()) {
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require_once 'Zend/Db/Statement/Sqlsrv/Exception.php';
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throw new Zend_Db_Statement_Sqlsrv_Exception($error);
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}
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// If no error, there is simply no record
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return false;
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}
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$data = sqlsrv_get_field($this->_stmt, $col); //0-based
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if ($data === false) {
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require_once 'Zend/Db/Statement/Sqlsrv/Exception.php';
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throw new Zend_Db_Statement_Sqlsrv_Exception(sqlsrv_errors());
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}
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return $data;
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}
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/**
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* Fetches the next row and returns it as an object.
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*
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* @param string $class OPTIONAL Name of the class to create.
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* @param array $config OPTIONAL Constructor arguments for the class.
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* @return mixed One object instance of the specified class.
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* @throws Zend_Db_Statement_Exception
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*/
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public function fetchObject($class = 'stdClass', array $config = array())
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{
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if (!$this->_stmt) {
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return false;
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}
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$obj = sqlsrv_fetch_object($this->_stmt);
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if ($error = sqlsrv_errors()) {
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require_once 'Zend/Db/Statement/Sqlsrv/Exception.php';
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throw new Zend_Db_Statement_Sqlsrv_Exception($error);
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}
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/* @todo XXX handle parameters */
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if (null === $obj) {
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return false;
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}
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return $obj;
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}
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/**
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* Returns metadata for a column in a result set.
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*
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* @param int $column
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* @return mixed
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* @throws Zend_Db_Statement_Sqlsrv_Exception
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*/
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public function getColumnMeta($column)
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{
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$fields = sqlsrv_field_metadata($this->_stmt);
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if (!$fields) {
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throw new Zend_Db_Statement_Sqlsrv_Exception('Column metadata can not be fetched');
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}
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if (!isset($fields[$column])) {
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throw new Zend_Db_Statement_Sqlsrv_Exception('Column index does not exist in statement');
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}
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return $fields[$column];
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}
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/**
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* Retrieves the next rowset (result set) for a SQL statement that has
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* multiple result sets. An example is a stored procedure that returns
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* the results of multiple queries.
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*
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* @return bool
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* @throws Zend_Db_Statement_Exception
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*/
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public function nextRowset()
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{
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if (sqlsrv_next_result($this->_stmt) === false) {
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require_once 'Zend/Db/Statement/Sqlsrv/Exception.php';
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throw new Zend_Db_Statement_Sqlsrv_Exception(sqlsrv_errors());
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}
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//else - moved to next (or there are no more rows)
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}
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/**
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* Returns the number of rows affected by the execution of the
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* last INSERT, DELETE, or UPDATE statement executed by this
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* statement object.
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*
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* @return int The number of rows affected.
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* @throws Zend_Db_Statement_Exception
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*/
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public function rowCount()
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{
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if (!$this->_stmt) {
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return false;
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}
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if (!$this->_executed) {
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return 0;
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}
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$num_rows = sqlsrv_rows_affected($this->_stmt);
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// Strict check is necessary; 0 is a valid return value
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||
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if ($num_rows === false) {
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||
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require_once 'Zend/Db/Statement/Sqlsrv/Exception.php';
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||
|
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throw new Zend_Db_Statement_Sqlsrv_Exception(sqlsrv_errors());
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}
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return $num_rows;
|
||
|
|
}
|
||
|
|
}
|