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+<?php
+/**
+ * Zend Framework
+ *
+ * LICENSE
+ *
+ * This source file is subject to the new BSD license that is bundled
+ * with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://framework.zend.com/license/new-bsd
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@zend.com so we can send you a copy immediately.
+ *
+ * @category Zend
+ * @package Zend_Db
+ * @subpackage Statement
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license http://framework.zend.com/license/new-bsd New BSD License
+ * @version $Id$
+ */
+
+/**
+ * @see Zend_Db
+ */
+
+/**
+ * @see Zend_Db_Statement_Interface
+ */
+
+/**
+ * Abstract class to emulate a PDOStatement for native database adapters.
+ *
+ * @category Zend
+ * @package Zend_Db
+ * @subpackage Statement
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license http://framework.zend.com/license/new-bsd New BSD License
+ */
+abstract class Zend_Db_Statement implements Zend_Db_Statement_Interface
+{
+
+ /**
+ * @var resource|object The driver level statement object/resource
+ */
+ protected $_stmt = null;
+
+ /**
+ * @var Zend_Db_Adapter_Abstract
+ */
+ protected $_adapter = null;
+
+ /**
+ * The current fetch mode.
+ *
+ * @var integer
+ */
+ protected $_fetchMode = Zend_Db::FETCH_ASSOC;
+
+ /**
+ * Attributes.
+ *
+ * @var array
+ */
+ protected $_attribute = array();
+
+ /**
+ * Column result bindings.
+ *
+ * @var array
+ */
+ protected $_bindColumn = array();
+
+ /**
+ * Query parameter bindings; covers bindParam() and bindValue().
+ *
+ * @var array
+ */
+ protected $_bindParam = array();
+
+ /**
+ * SQL string split into an array at placeholders.
+ *
+ * @var array
+ */
+ protected $_sqlSplit = array();
+
+ /**
+ * Parameter placeholders in the SQL string by position in the split array.
+ *
+ * @var array
+ */
+ protected $_sqlParam = array();
+
+ /**
+ * @var Zend_Db_Profiler_Query
+ */
+ protected $_queryId = null;
+
+ /**
+ * Constructor for a statement.
+ *
+ * @param Zend_Db_Adapter_Abstract $adapter
+ * @param mixed $sql Either a string or Zend_Db_Select.
+ */
+ public function __construct($adapter, $sql)
+ {
+ $this->_adapter = $adapter;
+ if ($sql instanceof Zend_Db_Select) {
+ $sql = $sql->assemble();
+ }
+ $this->_parseParameters($sql);
+ $this->_prepare($sql);
+
+ $this->_queryId = $this->_adapter->getProfiler()->queryStart($sql);
+ }
+
+ /**
+ * Internal method called by abstract statment constructor to setup
+ * the driver level statement
+ *
+ * @return void
+ */
+ protected function _prepare($sql)
+ {
+ return;
+ }
+
+ /**
+ * @param string $sql
+ * @return void
+ */
+ protected function _parseParameters($sql)
+ {
+ $sql = $this->_stripQuoted($sql);
+
+ // split into text and params
+ $this->_sqlSplit = empty($sql) ? [] : preg_split('/(\?|\:[a-zA-Z0-9_]+)/',
+ $sql, -1, PREG_SPLIT_DELIM_CAPTURE|PREG_SPLIT_NO_EMPTY);
+
+ // map params
+ $this->_sqlParam = array();
+ foreach ($this->_sqlSplit as $key => $val) {
+ if ($val == '?') {
+ if ($this->_adapter->supportsParameters('positional') === false) {
+ /**
+ * @see Zend_Db_Statement_Exception
+ */
+ throw new Zend_Db_Statement_Exception("Invalid bind-variable position '$val'");
+ }
+ } else if ($val[0] == ':') {
+ if ($this->_adapter->supportsParameters('named') === false) {
+ /**
+ * @see Zend_Db_Statement_Exception
+ */
+ throw new Zend_Db_Statement_Exception("Invalid bind-variable name '$val'");
+ }
+ }
+ $this->_sqlParam[] = $val;
+ }
+
+ // set up for binding
+ $this->_bindParam = array();
+ }
+
+ /**
+ * Remove parts of a SQL string that contain quoted strings
+ * of values or identifiers.
+ *
+ * @param string $sql
+ * @return string
+ */
+ protected function _stripQuoted($sql)
+ {
+
+ // get the character for value quoting
+ // this should be '
+ $q = $this->_adapter->quote('a');
+ $q = $q[0];
+ // get the value used as an escaped quote,
+ // e.g. \' or ''
+ $qe = $this->_adapter->quote($q);
+ $qe = substr($qe, 1, 2);
+ $qe = preg_quote($qe);
+ $escapeChar = substr($qe,0,1);
+ // remove 'foo\'bar'
+ if (!empty($q)) {
+ $escapeChar = preg_quote($escapeChar);
+ if ($sql !== null) {
+ // this segfaults only after 65,000 characters instead of 9,000
+ $sql = preg_replace("/$q([^$q{$escapeChar}]*|($qe)*)*$q/s", '', $sql);
+ }
+ }
+
+ // get a version of the SQL statement with all quoted
+ // values and delimited identifiers stripped out
+ // remove "foo\"bar"
+ if ($sql !== null) {
+ $sql = preg_replace("/\"(\\\\\"|[^\"])*\"/Us", '', $sql);
+ }
+
+ // get the character for delimited id quotes,
+ // this is usually " but in MySQL is `
+ $d = $this->_adapter->quoteIdentifier('a');
+ $d = $d[0];
+ // get the value used as an escaped delimited id quote,
+ // e.g. \" or "" or \`
+ $de = $this->_adapter->quoteIdentifier($d);
+ $de = substr($de, 1, 2);
+ $de = preg_quote($de);
+ // Note: $de and $d where never used..., now they are:
+ if ($sql !== null) {
+ $sql = preg_replace("/$d($de|\\\\{2}|[^$d])*$d/Us", '', $sql);
+ }
+
+ return $sql;
+ }
+
+ /**
+ * Bind a column of the statement result set to a PHP variable.
+ *
+ * @param string $column Name the column in the result set, either by
+ * position or by name.
+ * @param mixed $param Reference to the PHP variable containing the value.
+ * @param mixed $type OPTIONAL
+ * @return bool
+ */
+ public function bindColumn($column, &$param, $type = null)
+ {
+ $this->_bindColumn[$column] =& $param;
+ return true;
+ }
+
+ /**
+ * Binds a parameter to the specified variable name.
+ *
+ * @param mixed $parameter Name the parameter, either integer or string.
+ * @param mixed $variable Reference to PHP variable containing the value.
+ * @param mixed $type OPTIONAL Datatype of SQL parameter.
+ * @param mixed $length OPTIONAL Length of SQL parameter.
+ * @param mixed $options OPTIONAL Other options.
+ * @return bool
+ */
+ public function bindParam($parameter, &$variable, $type = null, $length = null, $options = null)
+ {
+ if (!is_int($parameter) && !is_string($parameter)) {
+ /**
+ * @see Zend_Db_Statement_Exception
+ */
+ throw new Zend_Db_Statement_Exception('Invalid bind-variable position');
+ }
+
+ $position = null;
+ if (($intval = (int) $parameter) > 0 && $this->_adapter->supportsParameters('positional')) {
+ if ($intval >= 1 || $intval <= count($this->_sqlParam)) {
+ $position = $intval;
+ }
+ } else if ($this->_adapter->supportsParameters('named')) {
+ if ($parameter[0] != ':') {
+ $parameter = ':' . $parameter;
+ }
+ if (in_array($parameter, $this->_sqlParam) !== false) {
+ $position = $parameter;
+ }
+ }
+
+ if ($position === null) {
+ /**
+ * @see Zend_Db_Statement_Exception
+ */
+ throw new Zend_Db_Statement_Exception("Invalid bind-variable position '$parameter'");
+ }
+
+ // Finally we are assured that $position is valid
+ $this->_bindParam[$position] =& $variable;
+ return $this->_bindParam($position, $variable, $type, $length, $options);
+ }
+
+ /**
+ * Binds a value to a parameter.
+ *
+ * @param mixed $parameter Name the parameter, either integer or string.
+ * @param mixed $value Scalar value to bind to the parameter.
+ * @param mixed $type OPTIONAL Datatype of the parameter.
+ * @return bool
+ */
+ public function bindValue($parameter, $value, $type = null)
+ {
+ return $this->bindParam($parameter, $value, $type);
+ }
+
+ /**
+ * Executes a prepared statement.
+ *
+ * @param array $params OPTIONAL Values to bind to parameter placeholders.
+ * @return bool
+ */
+ public function execute(array $params = null)
+ {
+ /*
+ * Simple case - no query profiler to manage.
+ */
+ if ($this->_queryId === null) {
+ return $this->_execute($params);
+ }
+
+ /*
+ * Do the same thing, but with query profiler
+ * management before and after the execute.
+ */
+ $prof = $this->_adapter->getProfiler();
+ $qp = $prof->getQueryProfile($this->_queryId);
+ if ($qp->hasEnded()) {
+ $this->_queryId = $prof->queryClone($qp);
+ $qp = $prof->getQueryProfile($this->_queryId);
+ }
+ if ($params !== null) {
+ $qp->bindParams($params);
+ } else {
+ $qp->bindParams($this->_bindParam);
+ }
+ $qp->start($this->_queryId);
+
+ $retval = $this->_execute($params);
+
+ $prof->queryEnd($this->_queryId);
+
+ return $retval;
+ }
+
+ /**
+ * Returns an array containing all of the result set rows.
+ *
+ * @param int $style OPTIONAL Fetch mode.
+ * @param int $col OPTIONAL Column number, if fetch mode is by column.
+ * @return array Collection of rows, each in a format by the fetch mode.
+ */
+ public function fetchAll($style = null, $col = null)
+ {
+ $data = array();
+ if ($style === Zend_Db::FETCH_COLUMN && $col === null) {
+ $col = 0;
+ }
+ if ($col === null) {
+ while ($row = $this->fetch($style)) {
+ $data[] = $row;
+ }
+ } else {
+ while (false !== ($val = $this->fetchColumn($col))) {
+ $data[] = $val;
+ }
+ }
+ return $data;
+ }
+
+ /**
+ * Returns a single column from the next row of a result set.
+ *
+ * @param int $col OPTIONAL Position of the column to fetch.
+ * @return string One value from the next row of result set, or false.
+ */
+ public function fetchColumn($col = 0)
+ {
+ $data = array();
+ $col = (int) $col;
+ $row = $this->fetch(Zend_Db::FETCH_NUM);
+ if (!is_array($row)) {
+ return false;
+ }
+ return $row[$col];
+ }
+
+ /**
+ * Fetches the next row and returns it as an object.
+ *
+ * @param string $class OPTIONAL Name of the class to create.
+ * @param array $config OPTIONAL Constructor arguments for the class.
+ * @return mixed One object instance of the specified class, or false.
+ */
+ public function fetchObject($class = 'stdClass', array $config = array())
+ {
+ $obj = new $class($config);
+ $row = $this->fetch(Zend_Db::FETCH_ASSOC);
+ if (!is_array($row)) {
+ return false;
+ }
+ foreach ($row as $key => $val) {
+ $obj->$key = $val;
+ }
+ return $obj;
+ }
+
+ /**
+ * Retrieve a statement attribute.
+ *
+ * @param string $key Attribute name.
+ * @return mixed Attribute value.
+ */
+ public function getAttribute($key)
+ {
+ if (array_key_exists($key, $this->_attribute)) {
+ return $this->_attribute[$key];
+ }
+ }
+
+ /**
+ * Set a statement attribute.
+ *
+ * @param string $key Attribute name.
+ * @param mixed $val Attribute value.
+ * @return bool
+ */
+ public function setAttribute($key, $val)
+ {
+ $this->_attribute[$key] = $val;
+ }
+
+ /**
+ * Set the default fetch mode for this statement.
+ *
+ * @param int $mode The fetch mode.
+ * @return bool
+ * @throws Zend_Db_Statement_Exception
+ */
+ public function setFetchMode($mode)
+ {
+ switch ($mode) {
+ case Zend_Db::FETCH_NUM:
+ case Zend_Db::FETCH_ASSOC:
+ case Zend_Db::FETCH_BOTH:
+ case Zend_Db::FETCH_OBJ:
+ $this->_fetchMode = $mode;
+ break;
+ case Zend_Db::FETCH_BOUND:
+ default:
+ $this->closeCursor();
+ /**
+ * @see Zend_Db_Statement_Exception
+ */
+ throw new Zend_Db_Statement_Exception('invalid fetch mode');
+ break;
+ }
+ }
+
+ /**
+ * Helper function to map retrieved row
+ * to bound column variables
+ *
+ * @param array $row
+ * @return bool True
+ */
+ public function _fetchBound($row)
+ {
+ foreach ($row as $key => $value) {
+ // bindColumn() takes 1-based integer positions
+ // but fetch() returns 0-based integer indexes
+ if (is_int($key)) {
+ $key++;
+ }
+ // set results only to variables that were bound previously
+ if (isset($this->_bindColumn[$key])) {
+ $this->_bindColumn[$key] = $value;
+ }
+ }
+ return true;
+ }
+
+ /**
+ * Gets the Zend_Db_Adapter_Abstract for this
+ * particular Zend_Db_Statement object.
+ *
+ * @return Zend_Db_Adapter_Abstract
+ */
+ public function getAdapter()
+ {
+ return $this->_adapter;
+ }
+
+ /**
+ * Gets the resource or object setup by the
+ * _parse
+ * @return unknown_type
+ */
+ public function getDriverStatement()
+ {
+ return $this->_stmt;
+ }
+}
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