added all mdb2 drivers

1 files changed, 1106 insertions, 0 deletions

diff --git a/program/lib/MDB2/Driver/mysqli.php b/program/lib/MDB2/Driver/mysqli.php
new file mode 100755
index 000000000..f23132250
--- /dev/null
+++ b/program/lib/MDB2/Driver/mysqli.php
@@ -0,0 +1,1106 @@
+<?php
+// vim: set et ts=4 sw=4 fdm=marker:
+// +----------------------------------------------------------------------+
+// | PHP versions 4 and 5                                                 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1998-2004 Manuel Lemos, Tomas V.V.Cox,                 |
+// | Stig. S. Bakken, Lukas Smith                                         |
+// | All rights reserved.                                                 |
+// +----------------------------------------------------------------------+
+// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB  |
+// | API as well as database abstraction for PHP applications.            |
+// | This LICENSE is in the BSD license style.                            |
+// |                                                                      |
+// | Redistribution and use in source and binary forms, with or without   |
+// | modification, are permitted provided that the following conditions   |
+// | are met:                                                             |
+// |                                                                      |
+// | Redistributions of source code must retain the above copyright       |
+// | notice, this list of conditions and the following disclaimer.        |
+// |                                                                      |
+// | Redistributions in binary form must reproduce the above copyright    |
+// | notice, this list of conditions and the following disclaimer in the  |
+// | documentation and/or other materials provided with the distribution. |
+// |                                                                      |
+// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken,    |
+// | Lukas Smith nor the names of his contributors may be used to endorse |
+// | or promote products derived from this software without specific prior|
+// | written permission.                                                  |
+// |                                                                      |
+// | 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      |
+// | REGENTS 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.                                          |
+// +----------------------------------------------------------------------+
+// | Author: Lukas Smith <smith@pooteeweet.org>                           |
+// +----------------------------------------------------------------------+
+//
+// $Id$
+//
+
+/**
+ * MDB2 MySQL driver
+ *
+ * @package MDB2
+ * @category Database
+ * @author  Lukas Smith <smith@pooteeweet.org>
+ */
+class MDB2_Driver_mysqli extends MDB2_Driver_Common
+{
+    // {{{ properties
+    var $escape_quotes = "\\";
+
+    // }}}
+    // {{{ constructor
+
+    /**
+    * Constructor
+    */
+    function __construct()
+    {
+        parent::__construct();
+
+        $this->phptype = 'mysqli';
+        $this->dbsyntax = 'mysqli';
+
+        $this->supported['sequences'] = 'emulated';
+        $this->supported['indexes'] = true;
+        $this->supported['affected_rows'] = true;
+        $this->supported['transactions'] = false;
+        $this->supported['summary_functions'] = true;
+        $this->supported['order_by_text'] = true;
+        $this->supported['current_id'] = 'emulated';
+        $this->supported['limit_queries'] = true;
+        $this->supported['LOBs'] = true;
+        $this->supported['replace'] = true;
+        $this->supported['sub_selects'] = false;
+        $this->supported['auto_increment'] = true;
+        $this->supported['primary_key'] = true;
+
+        $this->options['default_table_type'] = null;
+    }
+
+    // }}}
+    // {{{ errorInfo()
+
+    /**
+     * This method is used to collect information about an error
+     *
+     * @param integer $error
+     * @return array
+     * @access public
+     */
+    function errorInfo($error = null)
+    {
+        if ($this->connection) {
+            $native_code = @mysqli_errno($this->connection);
+            $native_msg  = @mysqli_error($this->connection);
+        } else {
+            $native_code = @mysqli_errno();
+            $native_msg  = @mysqli_error();
+        }
+        if (is_null($error)) {
+            static $ecode_map;
+            if (empty($ecode_map)) {
+                $ecode_map = array(
+                    1004 => MDB2_ERROR_CANNOT_CREATE,
+                    1005 => MDB2_ERROR_CANNOT_CREATE,
+                    1006 => MDB2_ERROR_CANNOT_CREATE,
+                    1007 => MDB2_ERROR_ALREADY_EXISTS,
+                    1008 => MDB2_ERROR_CANNOT_DROP,
+                    1022 => MDB2_ERROR_ALREADY_EXISTS,
+                    1044 => MDB2_ERROR_ACCESS_VIOLATION,
+                    1046 => MDB2_ERROR_NODBSELECTED,
+                    1048 => MDB2_ERROR_CONSTRAINT,
+                    1049 => MDB2_ERROR_NOSUCHDB,
+                    1050 => MDB2_ERROR_ALREADY_EXISTS,
+                    1051 => MDB2_ERROR_NOSUCHTABLE,
+                    1054 => MDB2_ERROR_NOSUCHFIELD,
+                    1061 => MDB2_ERROR_ALREADY_EXISTS,
+                    1062 => MDB2_ERROR_ALREADY_EXISTS,
+                    1064 => MDB2_ERROR_SYNTAX,
+                    1091 => MDB2_ERROR_NOT_FOUND,
+                    1100 => MDB2_ERROR_NOT_LOCKED,
+                    1136 => MDB2_ERROR_VALUE_COUNT_ON_ROW,
+                    1142 => MDB2_ERROR_ACCESS_VIOLATION,
+                    1146 => MDB2_ERROR_NOSUCHTABLE,
+                    1216 => MDB2_ERROR_CONSTRAINT,
+                    1217 => MDB2_ERROR_CONSTRAINT,
+                );
+            }
+            if ($this->options['portability'] & MDB2_PORTABILITY_ERRORS) {
+                $ecode_map[1022] = MDB2_ERROR_CONSTRAINT;
+                $ecode_map[1048] = MDB2_ERROR_CONSTRAINT_NOT_NULL;
+                $ecode_map[1062] = MDB2_ERROR_CONSTRAINT;
+            } else {
+                // Doing this in case mode changes during runtime.
+                $ecode_map[1022] = MDB2_ERROR_ALREADY_EXISTS;
+                $ecode_map[1048] = MDB2_ERROR_CONSTRAINT;
+                $ecode_map[1062] = MDB2_ERROR_ALREADY_EXISTS;
+            }
+            if (isset($ecode_map[$native_code])) {
+                $error = $ecode_map[$native_code];
+            }
+        }
+        return array($error, $native_code, $native_msg);
+    }
+
+    // }}}
+    // {{{ escape()
+
+    /**
+     * Quotes a string so it can be safely used in a query. It will quote
+     * the text so it can safely be used within a query.
+     *
+     * @param string $text the input string to quote
+     * @return string quoted string
+     * @access public
+     */
+    function escape($text)
+    {
+        return @mysqli_escape_string($this->connection, $text);
+    }
+
+    // }}}
+    // {{{ quoteIdentifier()
+
+    /**
+     * Quote a string so it can be safely used as a table or column name
+     *
+     * Quoting style depends on which database driver is being used.
+     *
+     * MySQL can't handle the backtick character (<kbd>`</kbd>) in
+     * table or column names.
+     *
+     * @param string $str  identifier name to be quoted
+     *
+     * @return string  quoted identifier string
+     *
+     * @access public
+     * @internal
+     */
+    function quoteIdentifier($str)
+    {
+        return '`' . $str . '`';
+    }
+
+    // }}}
+    // {{{ beginTransaction()
+
+    /**
+     * Start a transaction.
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function beginTransaction()
+    {
+        $this->debug('starting transaction', 'beginTransaction');
+        if (!$this->supports('transactions')) {
+            return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                'beginTransaction: transactions are not in use');
+        }
+        if ($this->in_transaction) {
+            return MDB2_OK;  //nothing to do
+        }
+        $result = $this->_doQuery('SET AUTOCOMMIT = 0', true);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        $this->in_transaction = true;
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ commit()
+
+    /**
+     * Commit the database changes done during a transaction that is in
+     * progress.
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function commit()
+    {
+        $this->debug('commit transaction', 'commit');
+        if (!$this->supports('transactions')) {
+            return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                'commit: transactions are not in use');
+        }
+        if (!$this->in_transaction) {
+            return $this->raiseError(MDB2_ERROR, null, null,
+                'commit: transaction changes are being auto committed');
+        }
+        $result = $this->_doQuery('COMMIT', true);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        $result = $this->_doQuery('SET AUTOCOMMIT = 1', true);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        $this->in_transaction = false;
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ rollback()
+
+    /**
+     * Cancel any database changes done during a transaction that is in
+     * progress.
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function rollback()
+    {
+        $this->debug('rolling back transaction', 'rollback');
+        if (!$this->supports('transactions')) {
+            return $this->raiseError(MDB2_ERROR_UNSUPPORTED, null, null,
+                'rollback: transactions are not in use');
+        }
+        if (!$this->in_transaction) {
+            return $this->raiseError(MDB2_ERROR, null, null,
+                'rollback: transactions can not be rolled back when changes are auto committed');
+        }
+        $result = $this->_doQuery('ROLLBACK', true);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        $result = $this->_doQuery('SET AUTOCOMMIT = 1', true);
+        if (PEAR::isError($result)) {
+            return $result;
+        }
+        $this->in_transaction = false;
+        return MDB2_OK;
+
+    }
+
+    // }}}
+    // {{{ connect()
+
+    /**
+     * Connect to the database
+     *
+     * @return true on success, MDB2 Error Object on failure
+     */
+    function connect()
+    {
+        if (is_object($this->connection)) {
+            if (count(array_diff($this->connected_dsn, $this->dsn)) == 0) {
+                return MDB2_OK;
+            }
+            $this->connection = 0;
+        }
+
+        if (!PEAR::loadExtension($this->phptype)) {
+            return $this->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
+                'connect: extension '.$this->phptype.' is not compiled into PHP');
+        }
+
+        @ini_set('track_errors', true);
+        $php_errormsg = '';
+
+        if ($this->options['ssl'] === true) {
+            $init = @mysqli_init();
+            @mysqli_ssl_set(
+                $init,
+                empty($this->dsn['key'])    ? null : $this->dsn['key'],
+                empty($this->dsn['cert'])   ? null : $this->dsn['cert'],
+                empty($this->dsn['ca'])     ? null : $this->dsn['ca'],
+                empty($this->dsn['capath']) ? null : $this->dsn['capath'],
+                empty($this->dsn['cipher']) ? null : $this->dsn['cipher']
+            );
+            if ($connection = @mysqli_real_connect(
+                    $init,
+                    $this->dsn['hostspec'],
+                    $this->dsn['username'],
+                    $this->dsn['password'],
+                    $this->database_name,
+                    $this->dsn['port'],
+                    $this->dsn['socket']))
+            {
+                $connection = $init;
+            }
+        } else {
+            $connection = @mysqli_connect(
+                $this->dsn['hostspec'],
+                $this->dsn['username'],
+                $this->dsn['password'],
+                $this->database_name,
+                $this->dsn['port'],
+                $this->dsn['socket']
+            );
+        }
+
+        @ini_restore('track_errors');
+
+        if (!$connection) {
+            if (($err = @mysqli_connect_error()) != '') {
+                return $this->raiseError(MDB2_ERROR_CONNECT_FAILED, null, null, $err);
+            } else {
+                return $this->raiseError(MDB2_ERROR_CONNECT_FAILED, null, null, $php_errormsg);
+            }
+        }
+
+        $this->connection = $connection;
+        $this->connected_dsn = $this->dsn;
+        $this->connected_database_name = $this->database_name;
+        $this->dbsyntax = $this->dsn['dbsyntax'] ? $this->dsn['dbsyntax'] : $this->phptype;
+
+        $this->supported['transactions'] = false;
+        if ($this->options['default_table_type']) {
+            switch (strtoupper($this->options['default_table_type'])) {
+            case 'BERKELEYDB':
+                $this->options['default_table_type'] = 'BDB';
+            case 'BDB':
+            case 'INNODB':
+            case 'GEMINI':
+                $this->supported['transactions'] = true;
+                break;
+            case 'HEAP':
+            case 'ISAM':
+            case 'MERGE':
+            case 'MRG_MYISAM':
+            case 'MYISAM':
+                break;
+            default:
+                $this->warnings[] = $default_table_type.
+                    ' is not a supported default table type';
+            }
+        }
+
+        if ($this->options['use_transactions'] && !$this->supports('transactions')) {
+            $this->warnings[] = $this->options['default_table_type'].
+                ' is not a transaction-safe default table type; switched to INNODB';
+            $this->options['default_table_type'] = 'INNODB';
+            $this->supported['transactions'] = true;
+        }
+
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ disconnect()
+
+    /**
+     * Log out and disconnect from the database.
+     *
+     * @return mixed true on success, false if not connected and error
+     *                object on error
+     * @access public
+     */
+    function disconnect($force = true)
+    {
+        if (is_object($this->connection)) {
+            if ($force) {
+                @mysqli_close($this->connection);
+            }
+            $this->connection = 0;
+        }
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ _doQuery()
+
+    /**
+     * Execute a query
+     * @param string $query  query
+     * @param boolean $isManip  if the query is a manipulation query
+     * @param resource $connection
+     * @param string $database_name
+     * @return result or error object
+     * @access protected
+     */
+    function _doQuery($query, $isManip = false, $connection = null, $database_name = null)
+    {
+        $this->last_query = $query;
+        $this->debug($query, 'query');
+        if ($this->options['disable_query']) {
+            if ($isManip) {
+                return 0;
+            }
+            return null;
+        }
+
+        if (is_null($connection)) {
+            $err = $this->connect();
+            if (PEAR::isError($err)) {
+                return $err;
+            }
+            $connection = $this->connection;
+        }
+        if (is_null($database_name)) {
+            $database_name = $this->database_name;
+        }
+
+        if ($database_name) {
+            if ($database_name != $this->connected_database_name) {
+                if (!@mysqli_select_db($connection, $database_name)) {
+                    return $this->raiseError();
+                }
+                $this->connected_database_name = $database_name;
+            }
+        }
+
+        $function = $this->options['result_buffering']
+            ? 'mysqli_query' : 'mysqli_unbuffered_query';
+        $result = @$function($connection, $query);
+        if (!$result) {
+            return $this->raiseError();
+        }
+
+        if ($isManip) {
+            return @mysqli_affected_rows($connection);
+        }
+        return $result;
+    }
+
+    // }}}
+    // {{{ _modifyQuery()
+
+    /**
+     * Changes a query string for various DBMS specific reasons
+     *
+     * @param string $query  query to modify
+     * @return the new (modified) query
+     * @access protected
+     */
+    function _modifyQuery($query, $isManip, $limit, $offset)
+    {
+        if ($limit > 0
+            && !preg_match('/LIMIT\s*\d(\s*(,|OFFSET)\s*\d+)?/i', $query)
+        ) {
+            $query = rtrim($query);
+            if (substr($query, -1) == ';') {
+                $query = substr($query, 0, -1);
+            }
+            if ($isManip) {
+                return $query . " LIMIT $limit";
+            } else {
+                return $query . " LIMIT $offset, $limit";
+            }
+        }
+        return $query;
+    }
+
+    // }}}
+    // {{{ prepare()
+
+    /**
+     * Prepares a query for multiple execution with execute().
+     * With some database backends, this is emulated.
+     * prepare() requires a generic query as string like
+     * 'INSERT INTO numbers VALUES(?,?)' or
+     * 'INSERT INTO numbers VALUES(:foo,:bar)'.
+     * The ? and :[a-zA-Z] and  are placeholders which can be set using
+     * bindParam() and the query can be send off using the execute() method.
+     *
+     * @param string $query the query to prepare
+     * @param mixed   $types  array that contains the types of the placeholders
+     * @param mixed   $result_types  array that contains the types of the columns in
+     *                        the result set
+     * @return mixed resource handle for the prepared query on success, a MDB2
+     *        error on failure
+     * @access public
+     * @see bindParam, execute
+     */
+    function &prepare($query, $types = null, $result_types = null)
+    {
+        $isManip = MDB2::isManip($query);
+        $query = $this->_modifyQuery($query, $isManip, $this->row_limit, $this->row_offset);
+        $this->debug($query, 'prepare');
+        $placeholder_type_guess = $placeholder_type = null;
+        $question = '?';
+        $colon = ':';
+        $position = 0;
+        while ($position < strlen($query)) {
+            $q_position = strpos($query, $question, $position);
+            $c_position = strpos($query, $colon, $position);
+            if ($q_position && $c_position) {
+                $p_position = min($q_position, $c_position);
+            } elseif ($q_position) {
+                $p_position = $q_position;
+            } elseif ($c_position) {
+                $p_position = $c_position;
+            } else {
+                break;
+            }
+            if (is_null($placeholder_type)) {
+                $placeholder_type_guess = $query[$p_position];
+            }
+            if (is_int($quote = strpos($query, "'", $position)) && $quote < $p_position) {
+                if (!is_int($end_quote = strpos($query, "'", $quote + 1))) {
+                    $err =& $this->raiseError(MDB2_ERROR_SYNTAX, null, null,
+                        'prepare: query with an unterminated text string specified');
+                    return $err;
+                }
+                switch ($this->escape_quotes) {
+                case '':
+                case "'":
+                    $position = $end_quote + 1;
+                    break;
+                default:
+                    if ($end_quote == $quote + 1) {
+                        $position = $end_quote + 1;
+                    } else {
+                        if ($query[$end_quote-1] == $this->escape_quotes) {
+                            $position = $end_quote;
+                        } else {
+                            $position = $end_quote + 1;
+                        }
+                    }
+                    break;
+                }
+            } elseif ($query[$position] == $placeholder_type_guess) {
+                if ($placeholder_type_guess == '?') {
+                    break;
+                }
+                if (is_null($placeholder_type)) {
+                    $placeholder_type = $query[$p_position];
+                    $question = $colon = $placeholder_type;
+                }
+                $name = preg_replace('/^.{'.($position+1).'}([a-z0-9_]+).*$/si', '\\1', $query);
+                if ($name === '') {
+                    $err =& $this->raiseError(MDB2_ERROR_SYNTAX, null, null,
+                        'prepare: named parameter with an empty name');
+                    return $err;
+                }
+                $query = substr_replace($query, '?', $position, strlen($name)+1);
+                $position = $p_position + 1;
+            } else {
+                $position = $p_position;
+            }
+        }
+        $statement = @mysqli_prepare($this->connection, $query);
+        $class_name = 'MDB2_Statement_'.$this->phptype;
+        $obj =& new $class_name($this, $statement, $query, $types, $result_types);
+        return $obj;
+    }
+
+    // }}}
+    // {{{ replace()
+
+    /**
+     * Execute a SQL REPLACE query. A REPLACE query is identical to a INSERT
+     * query, except that if there is already a row in the table with the same
+     * key field values, the REPLACE query just updates its values instead of
+     * inserting a new row.
+     *
+     * The REPLACE type of query does not make part of the SQL standards. Since
+     * practically only MySQL implements it natively, this type of query is
+     * emulated through this method for other DBMS using standard types of
+     * queries inside a transaction to assure the atomicity of the operation.
+     *
+     * @access public
+     *
+     * @param string $table name of the table on which the REPLACE query will
+     *  be executed.
+     * @param array $fields associative array that describes the fields and the
+     *  values that will be inserted or updated in the specified table. The
+     *  indexes of the array are the names of all the fields of the table. The
+     *  values of the array are also associative arrays that describe the
+     *  values and other properties of the table fields.
+     *
+     *  Here follows a list of field properties that need to be specified:
+     *
+     *    value:
+     *          Value to be assigned to the specified field. This value may be
+     *          of specified in database independent type format as this
+     *          function can perform the necessary datatype conversions.
+     *
+     *    Default:
+     *          this property is required unless the Null property
+     *          is set to 1.
+     *
+     *    type
+     *          Name of the type of the field. Currently, all types Metabase
+     *          are supported except for clob and blob.
+     *
+     *    Default: no type conversion
+     *
+     *    null
+     *          Boolean property that indicates that the value for this field
+     *          should be set to null.
+     *
+     *          The default value for fields missing in INSERT queries may be
+     *          specified the definition of a table. Often, the default value
+     *          is already null, but since the REPLACE may be emulated using
+     *          an UPDATE query, make sure that all fields of the table are
+     *          listed in this function argument array.
+     *
+     *    Default: 0
+     *
+     *    key
+     *          Boolean property that indicates that this field should be
+     *          handled as a primary key or at least as part of the compound
+     *          unique index of the table that will determine the row that will
+     *          updated if it exists or inserted a new row otherwise.
+     *
+     *          This function will fail if no key field is specified or if the
+     *          value of a key field is set to null because fields that are
+     *          part of unique index they may not be null.
+     *
+     *    Default: 0
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     */
+    function replace($table, $fields)
+    {
+        $count = count($fields);
+        $query = $values = '';
+        $keys = $colnum = 0;
+        for (reset($fields); $colnum < $count; next($fields), $colnum++) {
+            $name = key($fields);
+            if ($colnum > 0) {
+                $query .= ',';
+                $values.= ',';
+            }
+            $query.= $name;
+            if (isset($fields[$name]['null']) && $fields[$name]['null']) {
+                $value = 'NULL';
+            } else {
+                $value = $this->quote($fields[$name]['value'], $fields[$name]['type']);
+            }
+            $values.= $value;
+            if (isset($fields[$name]['key']) && $fields[$name]['key']) {
+                if ($value === 'NULL') {
+                    return $this->raiseError(MDB2_ERROR_CANNOT_REPLACE, null, null,
+                        'replace: key value '.$name.' may not be NULL');
+                }
+                $keys++;
+            }
+        }
+        if ($keys == 0) {
+            return $this->raiseError(MDB2_ERROR_CANNOT_REPLACE, null, null,
+                'replace: not specified which fields are keys');
+        }
+        $query = "REPLACE INTO $table ($query) VALUES ($values)";
+        $this->last_query = $query;
+        $this->debug($query, 'query');
+        return $this->_doQuery($query, true);
+    }
+
+    // }}}
+    // {{{ nextID()
+
+    /**
+     * returns the next free id of a sequence
+     *
+     * @param string $seq_name name of the sequence
+     * @param boolean $ondemand when true the seqence is
+     *                          automatic created, if it
+     *                          not exists
+     *
+     * @return mixed MDB2 Error Object or id
+     * @access public
+     */
+    function nextID($seq_name, $ondemand = true)
+    {
+        $sequence_name = $this->getSequenceName($seq_name);
+        $query = "INSERT INTO $sequence_name (".$this->options['seqcol_name'].") VALUES (NULL)";
+        $this->expectError(MDB2_ERROR_NOSUCHTABLE);
+        $result = $this->_doQuery($query, true);
+        $this->popExpect();
+        if (PEAR::isError($result)) {
+            if ($ondemand && $result->getCode() == MDB2_ERROR_NOSUCHTABLE) {
+                $this->loadModule('Manager');
+                // Since we are creating the sequence on demand
+                // we know the first id = 1 so initialize the
+                // sequence at 2
+                $result = $this->manager->createSequence($seq_name, 2);
+                if (PEAR::isError($result)) {
+                    return $this->raiseError(MDB2_ERROR, null, null,
+                        'nextID: on demand sequence '.$seq_name.' could not be created');
+                } else {
+                    // First ID of a newly created sequence is 1
+                    return 1;
+                }
+            }
+            return $result;
+        }
+        $value = @mysqli_insert_id($this->connection);
+        if (is_numeric($value)) {
+            $query = "DELETE FROM $sequence_name WHERE ".$this->options['seqcol_name']." < $value";
+            $result = $this->_doQuery($query, true);
+            if (PEAR::isError($result)) {
+                $this->warnings[] = 'nextID: could not delete previous sequence table values from '.$seq_name;
+            }
+        }
+        return $value;
+    }
+
+    // }}}
+    // {{{ lastInsertID()
+
+    /**
+     * returns the autoincrement ID if supported or $id
+     *
+     * @param mixed $id value as returned by getBeforeId()
+     * @param string $table name of the table into which a new row was inserted
+     * @return mixed MDB2 Error Object or id
+     * @access public
+     */
+    function lastInsertID($table = null, $field = null)
+    {
+        $value = @mysqli_insert_id($this->connection);
+        if (!$value) {
+            return $this->raiseError();
+        }
+        return $value;
+    }
+
+    // }}}
+    // {{{ currID()
+
+    /**
+     * returns the current id of a sequence
+     *
+     * @param string $seq_name name of the sequence
+     * @return mixed MDB2 Error Object or id
+     * @access public
+     */
+    function currID($seq_name)
+    {
+        $sequence_name = $this->getSequenceName($seq_name);
+        $query = "SELECT MAX(".$this->options['seqcol_name'].") FROM $sequence_name";
+        return $this->queryOne($query, 'integer');
+    }
+}
+
+class MDB2_Result_mysqli extends MDB2_Result_Common
+{
+    // }}}
+    // {{{ fetchRow()
+
+    /**
+     * Fetch a row and insert the data into an existing array.
+     *
+     * @param int       $fetchmode  how the array data should be indexed
+     * @param int    $rownum    number of the row where the data can be found
+     * @return int data array on success, a MDB2 error on failure
+     * @access public
+     */
+    function &fetchRow($fetchmode = MDB2_FETCHMODE_DEFAULT, $rownum = null)
+    {
+        if (!is_null($rownum)) {
+            $seek = $this->seek($rownum);
+            if (PEAR::isError($seek)) {
+                return $seek;
+            }
+        }
+        if ($fetchmode == MDB2_FETCHMODE_DEFAULT) {
+            $fetchmode = $this->db->fetchmode;
+        }
+        if ($fetchmode & MDB2_FETCHMODE_ASSOC) {
+            $row = @mysqli_fetch_assoc($this->result);
+            if (is_array($row)
+                && $this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE
+            ) {
+                $row = array_change_key_case($row, $this->db->options['field_case']);
+            }
+        } else {
+           $row = @mysqli_fetch_row($this->result);
+        }
+
+        if (!$row) {
+            if (is_null($this->result)) {
+                $err =& $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                    'fetchRow: resultset has already been freed');
+                return $err;
+            }
+            $null = null;
+            return $null;
+        }
+        if ($this->db->options['portability'] & MDB2_PORTABILITY_EMPTY_TO_NULL) {
+            $this->db->_fixResultArrayValues($row, MDB2_PORTABILITY_EMPTY_TO_NULL);
+        }
+        if (!empty($this->values)) {
+            $this->_assignBindColumns($row);
+        }
+        if (!empty($this->types)) {
+            $row = $this->db->datatype->convertResultRow($this->types, $row);
+        }
+        if ($fetchmode === MDB2_FETCHMODE_OBJECT) {
+            $object_class = $this->db->options['fetch_class'];
+            if ($object_class == 'stdClass') {
+                $row = (object) $row;
+            } else {
+                $row = &new $object_class($row);
+            }
+        }
+        ++$this->rownum;
+        return $row;
+    }
+
+    // }}}
+    // {{{ _getColumnNames()
+
+    /**
+     * Retrieve the names of columns returned by the DBMS in a query result.
+     *
+     * @return mixed                an associative array variable
+     *                              that will hold the names of columns. The
+     *                              indexes of the array are the column names
+     *                              mapped to lower case and the values are the
+     *                              respective numbers of the columns starting
+     *                              from 0. Some DBMS may not return any
+     *                              columns when the result set does not
+     *                              contain any rows.
+     *
+     *                              a MDB2 error on failure
+     * @access private
+     */
+    function _getColumnNames()
+    {
+        $columns = array();
+        $numcols = $this->numCols();
+        if (PEAR::isError($numcols)) {
+            return $numcols;
+        }
+        for ($column = 0; $column < $numcols; $column++) {
+            $column_info = @mysqli_fetch_field_direct($this->result, $column);
+            $columns[$column_info->name] = $column;
+        }
+        if ($this->db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
+            $columns = array_change_key_case($columns, $this->db->options['field_case']);
+        }
+        return $columns;
+    }
+
+    // }}}
+    // {{{ numCols()
+
+    /**
+     * Count the number of columns returned by the DBMS in a query result.
+     *
+     * @return mixed integer value with the number of columns, a MDB2 error
+     *                       on failure
+     * @access public
+     */
+    function numCols()
+    {
+        $cols = @mysqli_num_fields($this->result);
+        if (is_null($cols)) {
+            if (is_null($this->result)) {
+                return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                    'numCols: resultset has already been freed');
+            }
+            return $this->db->raiseError();
+        }
+        return $cols;
+    }
+
+    // }}}
+    // {{{ free()
+
+    /**
+     * Free the internal resources associated with result.
+     *
+     * @return boolean true on success, false if result is invalid
+     * @access public
+     */
+    function free()
+    {
+        @mysqli_free_result($this->result);
+        $this->result = null;
+        return MDB2_OK;
+    }
+}
+
+class MDB2_BufferedResult_mysqli extends MDB2_Result_mysqli
+{
+    // }}}
+    // {{{ seek()
+
+    /**
+    * seek to a specific row in a result set
+    *
+    * @param int    $rownum    number of the row where the data can be found
+    * @return mixed MDB2_OK on success, a MDB2 error on failure
+    * @access public
+    */
+    function seek($rownum = 0)
+    {
+        if ($this->rownum != ($rownum - 1) && !@mysqli_data_seek($this->result, $rownum)) {
+            if (is_null($this->result)) {
+                return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                    'seek: resultset has already been freed');
+            }
+            return $this->db->raiseError(MDB2_ERROR_INVALID, null, null,
+                'seek: tried to seek to an invalid row number ('.$rownum.')');
+        }
+        $this->rownum = $rownum - 1;
+        return MDB2_OK;
+    }
+
+    // }}}
+    // {{{ valid()
+
+    /**
+    * check if the end of the result set has been reached
+    *
+    * @return mixed true or false on sucess, a MDB2 error on failure
+    * @access public
+    */
+    function valid()
+    {
+        $numrows = $this->numRows();
+        if (PEAR::isError($numrows)) {
+            return $numrows;
+        }
+        return $this->rownum < ($numrows - 1);
+    }
+
+    // }}}
+    // {{{ numRows()
+
+    /**
+    * returns the number of rows in a result object
+    *
+    * @return mixed MDB2 Error Object or the number of rows
+    * @access public
+    */
+    function numRows()
+    {
+        $rows = @mysqli_num_rows($this->result);
+        if (is_null($rows)) {
+            if (is_null($this->result)) {
+                return $this->db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
+                    'numRows: resultset has already been freed');
+            }
+            return $this->raiseError();
+        }
+        return $rows;
+    }
+}
+
+class MDB2_Statement_mysqli extends MDB2_Statement_Common
+{
+    // {{{ _execute()
+
+    /**
+     * Execute a prepared query statement helper method.
+     *
+     * @param mixed $result_class string which specifies which result class to use
+     * @param mixed $result_wrap_class string which specifies which class to wrap results in
+     * @return mixed a result handle or MDB2_OK on success, a MDB2 error on failure
+     * @access private
+     */
+    function &_execute($result_class = true, $result_wrap_class = false)
+    {
+        $isManip = MDB2::isManip($this->query);
+        $this->db->last_query = $this->query;
+        $this->db->debug($this->query, 'execute');
+        if ($this->db->getOption('disable_query')) {
+            if ($isManip) {
+                $return = 0;
+                return $return;
+            }
+            $null = null;
+            return $null;
+        }
+
+        $connected = $this->db->connect();
+        if (PEAR::isError($connected)) {
+            return $connected;
+        }
+
+        if (!empty($this->values)) {
+            $parameters = array(0 => $this->statement, 1 => '');
+            $i = 0;
+            foreach ($this->values as $parameter => $value) {
+                $type = array_key_exists($parameter, $this->types) ? $this->types[$parameter] : null;
+                $close = false;
+                if ($type == 'clob' || $type == 'blob') {
+                    if (preg_match('/^(\w+:\/\/)(.*)$/', $value, $match)) {
+                        $close = true;
+                        if ($match[1] == 'file://') {
+                            $value = $match[2];
+                        }
+                        $value = @fopen($value, 'r');
+                    }
+                }
+                if (is_resource($value)) {
+                    while (!@feof($value)) {
+                        $data = @fread($value, $this->db->options['lob_buffer_length']);
+                        @mysqli_stmt_send_long_data($this->statement, $i, $data);
+                    }
+                    if ($close) {
+                        @fclose($value);
+                    }
+                    $parameters[] = null;
+                    $parameters[1].= 'b';
+                } elseif ($type == 'clob' || $type == 'blob') {
+                    do {
+                        $data = substr($value, 0, $this->db->options['lob_buffer_length']);
+                        $value = substr($value, $this->db->options['lob_buffer_length']);
+                        @mysqli_stmt_send_long_data($this->statement, $i, $data);
+                    } while ($value);
+                    $parameters[] = null;
+                    $parameters[1].= 'b';
+                } else {
+                    $parameters[] = $this->db->quote($value, $type, false);
+                    $parameters[1].= $this->db->datatype->mapPrepareDatatype($type);
+                }
+                ++$i;
+            }
+            $result = @call_user_func_array('mysqli_stmt_bind_param', $parameters);
+            if ($result === false) {
+                $err =& $this->db->raiseError();
+                return $err;
+            }
+        }
+
+        if (!@mysqli_stmt_execute($this->statement)) {
+            $err =& $this->db->raiseError();
+            return $err;
+        }
+
+        if (!mysqli_stmt_result_metadata($this->statement)) {
+            $result = @mysqli_stmt_affected_rows($this->statement);
+            return $result;
+        }
+
+        if ($this->db->options['result_buffering']) {
+            mysqli_stmt_store_result($this->statement);
+        }
+
+        $result &= $this->db->_wrapResult($result, $this->types,
+            $result_class, $result_wrap_class);
+        return $result;
+    }
+
+    // }}}
+
+    // }}}
+
+    // }}}
+    // {{{ free()
+
+    /**
+     * Release resources allocated for the specified prepared query.
+     *
+     * @return mixed MDB2_OK on success, a MDB2 error on failure
+     * @access public
+     */
+    function free()
+    {
+        if (!@mysqli_stmt_close($this->statement)) {
+            return $this->db->raiseError();
+        }
+        return MDB2_OK;
+    }
+}
+?>
\ No newline at end of file