net.php.pear/DB/fbsql.php

<?php
//
// +----------------------------------------------------------------------+
// | PHP Version 4                                                        |
// +----------------------------------------------------------------------+
// | Copyright (c) 1997-2002 The PHP Group                                |
// +----------------------------------------------------------------------+
// | This source file is subject to version 2.02 of the PHP license,      |
// | that is bundled with this package in the file LICENSE, and is        |
// | available at through the world-wide-web at                           |
// | http://www.php.net/license/2_02.txt.                                 |
// | If you did not receive a copy of the PHP license and are unable to   |
// | obtain it through the world-wide-web, please send a note to          |
// | license@php.net so we can mail you a copy immediately.               |
// +----------------------------------------------------------------------+
// | Author: Frank M. Kromann <frank@frontbase.com>                       |
// +----------------------------------------------------------------------+
//
// $Id: fbsql.php,v 1.14 2002/02/28 08:27:08 sebastian Exp $
//
// Database independent query interface definition for PHP's FrontBase
// extension.
//

//
// XXX legend:
//
// XXX ERRORMSG: The error message from the fbsql function should
//               be registered here.
//

require_once "DB/common.php";

class DB_fbsql extends DB_common
{
    // {{{ properties

    var $connection;
    var $phptype, $dbsyntax;
    var $prepare_tokens = array();
    var $prepare_types = array();
    var $num_rows = array();
    var $fetchmode = DB_FETCHMODE_ORDERED; /* Default fetch mode */

    // }}}
    // {{{ constructor

    /**
     * DB_fbsql constructor.
     *
     * @access public
     */

    function DB_fbsql()
    {
        $this->DB_common();
        $this->phptype = 'fbsql';
        $this->dbsyntax = 'fbsql';
        $this->features = array(
            'prepare' => false,
            'pconnect' => true,
            'transactions' => true,
            'limit' => 'emulate'
        );
        $this->errorcode_map = array(
            1004 => DB_ERROR_CANNOT_CREATE,
            1005 => DB_ERROR_CANNOT_CREATE,
            1006 => DB_ERROR_CANNOT_CREATE,
            1007 => DB_ERROR_ALREADY_EXISTS,
            1008 => DB_ERROR_CANNOT_DROP,
            1046 => DB_ERROR_NODBSELECTED,
            1050 => DB_ERROR_ALREADY_EXISTS,
            1051 => DB_ERROR_NOSUCHTABLE,
            1054 => DB_ERROR_NOSUCHFIELD,
            1062 => DB_ERROR_ALREADY_EXISTS,
            1064 => DB_ERROR_SYNTAX,
            1100 => DB_ERROR_NOT_LOCKED,
            1136 => DB_ERROR_VALUE_COUNT_ON_ROW,
            1146 => DB_ERROR_NOSUCHTABLE,
        );
    }

    // }}}

    // {{{ connect()

    /**
     * Connect to a database and log in as the specified user.
     *
     * @param $dsn the data source name (see DB::parseDSN for syntax)
     * @param $persistent (optional) whether the connection should
     *        be persistent
     * @access public
     * @return int DB_OK on success, a DB error on failure
     */

    function connect($dsninfo, $persistent = false)
    {
        if (!DB::assertExtension('fbsql'))
            return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND);

        $this->dsn = $dsninfo;
        $dbhost = $dsninfo['hostspec'] ? $dsninfo['hostspec'] : 'localhost';
        $user = $dsninfo['username'];
        $pw = $dsninfo['password'];

        $connect_function = $persistent ? 'fbsql_pconnect' : 'fbsql_connect';

        ini_set('track_errors', true);
        if ($dbhost && $user && $pw) {
            $conn = @$connect_function($dbhost, $user, $pw);
        } elseif ($dbhost && $user) {
            $conn = @$connect_function($dbhost, $user);
        } elseif ($dbhost) {
            $conn = @$connect_function($dbhost);
        } else {
            $conn = false;
        }
        ini_restore("track_errors");
        if (empty($conn)) {
            if (empty($php_errormsg)) {
                return $this->raiseError(DB_ERROR_CONNECT_FAILED);
            } else {
                return $this->raiseError(DB_ERROR_CONNECT_FAILED, null, null,
                                         null, $php_errormsg);
            }
        }

        if ($dsninfo['database']) {
            if (!fbsql_select_db($dsninfo['database'], $conn)) {
                return $this->fbsqlRaiseError();
            }
        }

        $this->connection = $conn;
        return DB_OK;
    }

    // }}}
    // {{{ disconnect()

    /**
     * Log out and disconnect from the database.
     *
     * @access public
     *
     * @return bool TRUE on success, FALSE if not connected.
     */
    function disconnect()
    {
        $ret = fbsql_close($this->connection);
        $this->connection = null;
        return $ret;
    }

    // }}}
    // {{{ simpleQuery()

    /**
     * Send a query to fbsql and return the results as a fbsql resource
     * identifier.
     *
     * @param the SQL query
     *
     * @access public
     *
     * @return mixed returns a valid fbsql result for successful SELECT
     * queries, DB_OK for other successful queries.  A DB error is
     * returned on failure.
     */
    function simpleQuery($query)
    {
        $this->last_query = $query;
        $query = $this->modifyQuery($query);
        $result = @fbsql_query("$query;", $this->connection);
        if (!$result) {
            return $this->fbsqlRaiseError();
        }
        // Determine which queries that should return data, and which
        // should return an error code only.
        if (DB::isManip($query)) {
            return DB_OK;
        }
        $numrows = $this->numrows($result);
        if (is_object($numrows)) {
            return $numrows;
        }
        $this->num_rows[$result] = $numrows;
        return $result;
    }

    // }}}
    // {{{ nextResult()

    /**
     * Move the internal fbsql result pointer to the next available result
     *
     * @param a valid fbsql result resource
     *
     * @access public
     *
     * @return true if a result is available otherwise return false
     */
    function nextResult($result)
    {
        return @fbsql_next_result($result);
    }

    // }}}
    // {{{ fetchRow()

    /**
     * Fetch and return a row of data (it uses fetchInto for that)
     * @param $result fbsql result identifier
     * @param   $fetchmode  format of fetched row array
     * @param   $rownum     the absolute row number to fetch
     *
     * @return  array   a row of data, or false on error
     */
    function fetchRow($result, $fetchmode = DB_FETCHMODE_DEFAULT, $rownum=null)
    {
        if ($fetchmode == DB_FETCHMODE_DEFAULT) {
            $fetchmode = $this->fetchmode;
        }
        $res = $this->fetchInto ($result, $arr, $fetchmode, $rownum);
        if ($res !== DB_OK) {
            return $res;
        }
        return $arr;
    }

    // }}}
    // {{{ fetchInto()

    /**
     * Fetch a row and insert the data into an existing array.
     *
     * @param $result fbsql result identifier
     * @param $arr (reference) array where data from the row is stored
     * @param $fetchmode how the array data should be indexed
     * @param   $rownum the row number to fetch
     * @access public
     *
     * @return int DB_OK on success, a DB error on failure
     */
    function fetchInto($result, &$arr, $fetchmode, $rownum=null)
    {
        if ($rownum !== null) {
            if (!@fbsql_data_seek($result, $rownum)) {
                return null;
            }
        }
        if ($fetchmode & DB_FETCHMODE_ASSOC) {
            $arr = @fbsql_fetch_array($result, FBSQL_ASSOC);
        } else {
            $arr = @fbsql_fetch_row($result);
        }
        if (!$arr) {
            $errno = @fbsql_errno($this->connection);
            if (!$errno) {
                return NULL;
            }
            return $this->fbsqlRaiseError($errno);
        }
        return DB_OK;
    }

    // }}}
    // {{{ freeResult()

    /**
     * Free the internal resources associated with $result.
     *
     * @param $result fbsql result identifier or DB statement identifier
     *
     * @access public
     *
     * @return bool TRUE on success, FALSE if $result is invalid
     */
    function freeResult($result)
    {
        if (is_resource($result)) {
            return fbsql_free_result($result);
        }

        if (!isset($this->prepare_tokens[(int)$result])) {
            return false;
        }

        unset($this->prepare_tokens[(int)$result]);
        unset($this->prepare_types[(int)$result]);

        return true;
    }

    // }}}
    // {{{ autoCommit()

    function autoCommit($onoff=false)
    {
        if ($onoff) {
            $this->query("SET COMMIT TRUE");
        } else {
            $this->query("SET COMMIT FALSE");
        }
    }

    // }}}
    // {{{ commit()

    function commit()
    {
        fbsql_commit();
    }

    // }}}
    // {{{ rollback()

    function rollback()
    {
        fbsql_rollback();
    }

    // }}}
    // {{{ numCols()

    /**
     * Get the number of columns in a result set.
     *
     * @param $result fbsql result identifier
     *
     * @access public
     *
     * @return int the number of columns per row in $result
     */
    function numCols($result)
    {
        $cols = @fbsql_num_fields($result);

        if (!$cols) {
            return $this->fbsqlRaiseError();
        }

        return $cols;
    }

    // }}}
    // {{{ numRows()

    /**
     * Get the number of rows in a result set.
     *
     * @param $result fbsql result identifier
     *
     * @access public
     *
     * @return int the number of rows in $result
     */
    function numRows($result)
    {
        $rows = @fbsql_num_rows($result);
        if ($rows === null) {
            return $this->fbsqlRaiseError();
        }
        return $rows;
    }

    // }}}
    // {{{ affectedRows()

    /**
     * Gets the number of rows affected by the data manipulation
     * query.  For other queries, this function returns 0.
     *
     * @return number of rows affected by the last query
     */

    function affectedRows()
    {
        if (DB::isManip($this->last_query)) {
            $result = @fbsql_affected_rows($this->connection);
        } else {
            $result = 0;
        }
        return $result;
     }

    // }}}
    // {{{ errorNative()

    /**
     * Get the native error code of the last error (if any) that
     * occured on the current connection.
     *
     * @access public
     *
     * @return int native fbsql error code
     */

    function errorNative()
    {
        return fbsql_errno($this->connection);
    }

    // }}}
    // {{{ nextId()

    /**
     * Get the next value in a sequence.  We emulate sequences
     * for fbsql.  Will create the sequence if it does not exist.
     *
     * @access public
     *
     * @param $seq_name the name of the sequence
     *
     * @param $ondemand whether to create the sequence table on demand
     * (default is true)
     *
     * @return a sequence integer, or a DB error
     */
    function nextId($seq_name, $ondemand = true)
    {
        $sqn = preg_replace('/[^a-z0-9_]/i', '_', $seq_name);
        $repeat = 0;
        do {
            $seqname = sprintf($this->getOption("seqname_format"), $sqn);
            $result = $this->query("INSERT INTO ${seqname} VALUES(NULL)");
            if ($ondemand && DB::isError($result) &&
                $result->getCode() == DB_ERROR_NOSUCHTABLE) {
                $repeat = 1;
                $result = $this->createSequence($seq_name);
                if (DB::isError($result)) {
                    return $result;
                }
            } else {
                $repeat = 0;
            }
        } while ($repeat);
        if (DB::isError($result)) {
            return $result;
        }
        return fbsql_insert_id($this->connection);
    }

    // }}}
    // {{{ createSequence()

    function createSequence($seq_name)
    {
        $sqn = preg_replace('/[^a-z0-9_]/i', '_', $seq_name);
        $seqname = sprintf($this->getOption("seqname_format"), $sqn);
        return $this->query("CREATE TABLE ${seqname} ".
                            '(id INTEGER UNSIGNED AUTO_INCREMENT NOT NULL,'.
                            ' PRIMARY KEY(id))');
    }

    // }}}
    // {{{ dropSequence()

    function dropSequence($seq_name)
    {
        $sqn = preg_replace('/[^a-z0-9_]/i', '_', $seq_name);
        $seqname = sprintf($this->getOption("seqname_format"), $sqn);
        return $this->query("DROP TABLE ${seqname} RESTRICT");
    }

    // }}}
    // {{{ modifyQuery()

    function modifyQuery($query)
    {
        if ($this->options['optimize'] == 'portability') {
            // "DELETE FROM table" gives 0 affected rows in fbsql.
            // This little hack lets you know how many rows were deleted.
            if (preg_match('/^\s*DELETE\s+FROM\s+(\S+)\s*$/i', $query)) {
                $query = preg_replace('/^\s*DELETE\s+FROM\s+(\S+)\s*$/',
                                      'DELETE FROM \1 WHERE 1=1', $query);
            }
        }
        return $query;
    }

    // }}}
    // {{{ fbsqlRaiseError()

    function fbsqlRaiseError($errno = null)
    {
        if ($errno === null) {
            $errno = $this->errorCode(fbsql_errno($this->connection));
        }
        return $this->raiseError($errno, null, null, null,
                        fbsql_error($this->connection));
    }

    // }}}
    // {{{ tableInfo()

    function tableInfo($result, $mode = null) {
        $count = 0;
        $id    = 0;
        $res   = array();

        /*
         * depending on $mode, metadata returns the following values:
         *
         * - mode is false (default):
         * $result[]:
         *   [0]["table"]  table name
         *   [0]["name"]   field name
         *   [0]["type"]   field type
         *   [0]["len"]    field length
         *   [0]["flags"]  field flags
         *
         * - mode is DB_TABLEINFO_ORDER
         * $result[]:
         *   ["num_fields"] number of metadata records
         *   [0]["table"]  table name
         *   [0]["name"]   field name
         *   [0]["type"]   field type
         *   [0]["len"]    field length
         *   [0]["flags"]  field flags
         *   ["order"][field name]  index of field named "field name"
         *   The last one is used, if you have a field name, but no index.
         *   Test:  if (isset($result['meta']['myfield'])) { ...
         *
         * - mode is DB_TABLEINFO_ORDERTABLE
         *    the same as above. but additionally
         *   ["ordertable"][table name][field name] index of field
         *      named "field name"
         *
         *      this is, because if you have fields from different
         *      tables with the same field name * they override each
         *      other with DB_TABLEINFO_ORDER
         *
         *      you can combine DB_TABLEINFO_ORDER and
         *      DB_TABLEINFO_ORDERTABLE with DB_TABLEINFO_ORDER |
         *      DB_TABLEINFO_ORDERTABLE * or with DB_TABLEINFO_FULL
         */

        // if $result is a string, then we want information about a
        // table without a resultset
        if (is_string($result)) {
            $id = @fbsql_list_fields($this->dsn['database'],
                                     $result, $this->connection);
            if (empty($id)) {
                return $this->fbsqlRaiseError();
            }
        } else { // else we want information about a resultset
            $id = $result;
            if (empty($id)) {
                return $this->fbsqlRaiseError();
            }
        }

        $count = @fbsql_num_fields($id);

        // made this IF due to performance (one if is faster than $count if's)
        if (empty($mode)) {
            for ($i=0; $i<$count; $i++) {
                $res[$i]['table'] = @fbsql_field_table ($id, $i);
                $res[$i]['name']  = @fbsql_field_name  ($id, $i);
                $res[$i]['type']  = @fbsql_field_type  ($id, $i);
                $res[$i]['len']   = @fbsql_field_len   ($id, $i);
                $res[$i]['flags'] = @fbsql_field_flags ($id, $i);
            }
        } else { // full
            $res["num_fields"]= $count;

            for ($i=0; $i<$count; $i++) {
                $res[$i]['table'] = @fbsql_field_table ($id, $i);
                $res[$i]['name']  = @fbsql_field_name  ($id, $i);
                $res[$i]['type']  = @fbsql_field_type  ($id, $i);
                $res[$i]['len']   = @fbsql_field_len   ($id, $i);
                $res[$i]['flags'] = @fbsql_field_flags ($id, $i);
                if ($mode & DB_TABLEINFO_ORDER) {
                    $res['order'][$res[$i]['name']] = $i;
                }
                if ($mode & DB_TABLEINFO_ORDERTABLE) {
                    $res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
                }
            }
        }

        // free the result only if we were called on a table
        if (is_string($result)) {
            @fbsql_free_result($id);
        }
        return $res;
    }

    // }}}
    // {{{ getSpecialQuery()

    /**
    * Returns the query needed to get some backend info
    * @param string $type What kind of info you want to retrieve
    * @return string The SQL query string
    */
    function getSpecialQuery($type)
    {
        switch ($type) {
            case 'tables':
                $sql = 'select "table_name" from information_schema.tables';
                break;
            default:
                return null;
        }
        return $sql;
    }

    // }}}
}

// TODO/wishlist:
// longReadlen
// binmode

?>
1	cvsjoko	1.1	<?php
2			//
3			// +----------------------------------------------------------------------+
4			// \| PHP Version 4 \|
5			// +----------------------------------------------------------------------+
6			// \| Copyright (c) 1997-2002 The PHP Group \|
7			// +----------------------------------------------------------------------+
8			// \| This source file is subject to version 2.02 of the PHP license, \|
9			// \| that is bundled with this package in the file LICENSE, and is \|
10			// \| available at through the world-wide-web at \|
11			// \| http://www.php.net/license/2_02.txt. \|
12			// \| If you did not receive a copy of the PHP license and are unable to \|
13			// \| obtain it through the world-wide-web, please send a note to \|
14			// \| license@php.net so we can mail you a copy immediately. \|
15			// +----------------------------------------------------------------------+
16			// \| Author: Frank M. Kromann <frank@frontbase.com> \|
17			// +----------------------------------------------------------------------+
18			//
19			// $Id: fbsql.php,v 1.14 2002/02/28 08:27:08 sebastian Exp $
20			//
21			// Database independent query interface definition for PHP's FrontBase
22			// extension.
23			//
24
25			//
26			// XXX legend:
27			//
28			// XXX ERRORMSG: The error message from the fbsql function should
29			// be registered here.
30			//
31
32			require_once "DB/common.php";
33
34			class DB_fbsql extends DB_common
35			{
36			// {{{ properties
37
38			var $connection;
39			var $phptype, $dbsyntax;
40			var $prepare_tokens = array();
41			var $prepare_types = array();
42			var $num_rows = array();
43			var $fetchmode = DB_FETCHMODE_ORDERED; /* Default fetch mode */
44
45			// }}}
46			// {{{ constructor
47
48			/**
49			* DB_fbsql constructor.
50			*
51			* @access public
52			*/
53
54			function DB_fbsql()
55			{
56			$this->DB_common();
57			$this->phptype = 'fbsql';
58			$this->dbsyntax = 'fbsql';
59			$this->features = array(
60			'prepare' => false,
61			'pconnect' => true,
62			'transactions' => true,
63			'limit' => 'emulate'
64			);
65			$this->errorcode_map = array(
66			1004 => DB_ERROR_CANNOT_CREATE,
67			1005 => DB_ERROR_CANNOT_CREATE,
68			1006 => DB_ERROR_CANNOT_CREATE,
69			1007 => DB_ERROR_ALREADY_EXISTS,
70			1008 => DB_ERROR_CANNOT_DROP,
71			1046 => DB_ERROR_NODBSELECTED,
72			1050 => DB_ERROR_ALREADY_EXISTS,
73			1051 => DB_ERROR_NOSUCHTABLE,
74			1054 => DB_ERROR_NOSUCHFIELD,
75			1062 => DB_ERROR_ALREADY_EXISTS,
76			1064 => DB_ERROR_SYNTAX,
77			1100 => DB_ERROR_NOT_LOCKED,
78			1136 => DB_ERROR_VALUE_COUNT_ON_ROW,
79			1146 => DB_ERROR_NOSUCHTABLE,
80			);
81			}
82
83			// }}}
84
85			// {{{ connect()
86
87			/**
88			* Connect to a database and log in as the specified user.
89			*
90			* @param $dsn the data source name (see DB::parseDSN for syntax)
91			* @param $persistent (optional) whether the connection should
92			* be persistent
93			* @access public
94			* @return int DB_OK on success, a DB error on failure
95			*/
96
97			function connect($dsninfo, $persistent = false)
98			{
99			if (!DB::assertExtension('fbsql'))
100			return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND);
101
102			$this->dsn = $dsninfo;
103			$dbhost = $dsninfo['hostspec'] ? $dsninfo['hostspec'] : 'localhost';
104			$user = $dsninfo['username'];
105			$pw = $dsninfo['password'];
106
107			$connect_function = $persistent ? 'fbsql_pconnect' : 'fbsql_connect';
108
109			ini_set('track_errors', true);
110			if ($dbhost && $user && $pw) {
111			$conn = @$connect_function($dbhost, $user, $pw);
112			} elseif ($dbhost && $user) {
113			$conn = @$connect_function($dbhost, $user);
114			} elseif ($dbhost) {
115			$conn = @$connect_function($dbhost);
116			} else {
117			$conn = false;
118			}
119			ini_restore("track_errors");
120			if (empty($conn)) {
121			if (empty($php_errormsg)) {
122			return $this->raiseError(DB_ERROR_CONNECT_FAILED);
123			} else {
124			return $this->raiseError(DB_ERROR_CONNECT_FAILED, null, null,
125			null, $php_errormsg);
126			}
127			}
128
129			if ($dsninfo['database']) {
130			if (!fbsql_select_db($dsninfo['database'], $conn)) {
131			return $this->fbsqlRaiseError();
132			}
133			}
134
135			$this->connection = $conn;
136			return DB_OK;
137			}
138
139			// }}}
140			// {{{ disconnect()
141
142			/**
143			* Log out and disconnect from the database.
144			*
145			* @access public
146			*
147			* @return bool TRUE on success, FALSE if not connected.
148			*/
149			function disconnect()
150			{
151			$ret = fbsql_close($this->connection);
152			$this->connection = null;
153			return $ret;
154			}
155
156			// }}}
157			// {{{ simpleQuery()
158
159			/**
160			* Send a query to fbsql and return the results as a fbsql resource
161			* identifier.
162			*
163			* @param the SQL query
164			*
165			* @access public
166			*
167			* @return mixed returns a valid fbsql result for successful SELECT
168			* queries, DB_OK for other successful queries. A DB error is
169			* returned on failure.
170			*/
171			function simpleQuery($query)
172			{
173			$this->last_query = $query;
174			$query = $this->modifyQuery($query);
175			$result = @fbsql_query("$query;", $this->connection);
176			if (!$result) {
177			return $this->fbsqlRaiseError();
178			}
179			// Determine which queries that should return data, and which
180			// should return an error code only.
181			if (DB::isManip($query)) {
182			return DB_OK;
183			}
184			$numrows = $this->numrows($result);
185			if (is_object($numrows)) {
186			return $numrows;
187			}
188			$this->num_rows[$result] = $numrows;
189			return $result;
190			}
191
192			// }}}
193			// {{{ nextResult()
194
195			/**
196			* Move the internal fbsql result pointer to the next available result
197			*
198			* @param a valid fbsql result resource
199			*
200			* @access public
201			*
202			* @return true if a result is available otherwise return false
203			*/
204			function nextResult($result)
205			{
206			return @fbsql_next_result($result);
207			}
208
209			// }}}
210			// {{{ fetchRow()
211
212			/**
213			* Fetch and return a row of data (it uses fetchInto for that)
214			* @param $result fbsql result identifier
215			* @param $fetchmode format of fetched row array
216			* @param $rownum the absolute row number to fetch
217			*
218			* @return array a row of data, or false on error
219			*/
220			function fetchRow($result, $fetchmode = DB_FETCHMODE_DEFAULT, $rownum=null)
221			{
222			if ($fetchmode == DB_FETCHMODE_DEFAULT) {
223			$fetchmode = $this->fetchmode;
224			}
225			$res = $this->fetchInto ($result, $arr, $fetchmode, $rownum);
226			if ($res !== DB_OK) {
227			return $res;
228			}
229			return $arr;
230			}
231
232			// }}}
233			// {{{ fetchInto()
234
235			/**
236			* Fetch a row and insert the data into an existing array.
237			*
238			* @param $result fbsql result identifier
239			* @param $arr (reference) array where data from the row is stored
240			* @param $fetchmode how the array data should be indexed
241			* @param $rownum the row number to fetch
242			* @access public
243			*
244			* @return int DB_OK on success, a DB error on failure
245			*/
246			function fetchInto($result, &$arr, $fetchmode, $rownum=null)
247			{
248			if ($rownum !== null) {
249			if (!@fbsql_data_seek($result, $rownum)) {
250			return null;
251			}
252			}
253			if ($fetchmode & DB_FETCHMODE_ASSOC) {
254			$arr = @fbsql_fetch_array($result, FBSQL_ASSOC);
255			} else {
256			$arr = @fbsql_fetch_row($result);
257			}
258			if (!$arr) {
259			$errno = @fbsql_errno($this->connection);
260			if (!$errno) {
261			return NULL;
262			}
263			return $this->fbsqlRaiseError($errno);
264			}
265			return DB_OK;
266			}
267
268			// }}}
269			// {{{ freeResult()
270
271			/**
272			* Free the internal resources associated with $result.
273			*
274			* @param $result fbsql result identifier or DB statement identifier
275			*
276			* @access public
277			*
278			* @return bool TRUE on success, FALSE if $result is invalid
279			*/
280			function freeResult($result)
281			{
282			if (is_resource($result)) {
283			return fbsql_free_result($result);
284			}
285
286			if (!isset($this->prepare_tokens[(int)$result])) {
287			return false;
288			}
289
290			unset($this->prepare_tokens[(int)$result]);
291			unset($this->prepare_types[(int)$result]);
292
293			return true;
294			}
295
296			// }}}
297			// {{{ autoCommit()
298
299			function autoCommit($onoff=false)
300			{
301			if ($onoff) {
302			$this->query("SET COMMIT TRUE");
303			} else {
304			$this->query("SET COMMIT FALSE");
305			}
306			}
307
308			// }}}
309			// {{{ commit()
310
311			function commit()
312			{
313			fbsql_commit();
314			}
315
316			// }}}
317			// {{{ rollback()
318
319			function rollback()
320			{
321			fbsql_rollback();
322			}
323
324			// }}}
325			// {{{ numCols()
326
327			/**
328			* Get the number of columns in a result set.
329			*
330			* @param $result fbsql result identifier
331			*
332			* @access public
333			*
334			* @return int the number of columns per row in $result
335			*/
336			function numCols($result)
337			{
338			$cols = @fbsql_num_fields($result);
339
340			if (!$cols) {
341			return $this->fbsqlRaiseError();
342			}
343
344			return $cols;
345			}
346
347			// }}}
348			// {{{ numRows()
349
350			/**
351			* Get the number of rows in a result set.
352			*
353			* @param $result fbsql result identifier
354			*
355			* @access public
356			*
357			* @return int the number of rows in $result
358			*/
359			function numRows($result)
360			{
361			$rows = @fbsql_num_rows($result);
362			if ($rows === null) {
363			return $this->fbsqlRaiseError();
364			}
365			return $rows;
366			}
367
368			// }}}
369			// {{{ affectedRows()
370
371			/**
372			* Gets the number of rows affected by the data manipulation
373			* query. For other queries, this function returns 0.
374			*
375			* @return number of rows affected by the last query
376			*/
377
378			function affectedRows()
379			{
380			if (DB::isManip($this->last_query)) {
381			$result = @fbsql_affected_rows($this->connection);
382			} else {
383			$result = 0;
384			}
385			return $result;
386			}
387
388			// }}}
389			// {{{ errorNative()
390
391			/**
392			* Get the native error code of the last error (if any) that
393			* occured on the current connection.
394			*
395			* @access public
396			*
397			* @return int native fbsql error code
398			*/
399
400			function errorNative()
401			{
402			return fbsql_errno($this->connection);
403			}
404
405			// }}}
406			// {{{ nextId()
407
408			/**
409			* Get the next value in a sequence. We emulate sequences
410			* for fbsql. Will create the sequence if it does not exist.
411			*
412			* @access public
413			*
414			* @param $seq_name the name of the sequence
415			*
416			* @param $ondemand whether to create the sequence table on demand
417			* (default is true)
418			*
419			* @return a sequence integer, or a DB error
420			*/
421			function nextId($seq_name, $ondemand = true)
422			{
423			$sqn = preg_replace('/[^a-z0-9_]/i', '_', $seq_name);
424			$repeat = 0;
425			do {
426			$seqname = sprintf($this->getOption("seqname_format"), $sqn);
427			$result = $this->query("INSERT INTO ${seqname} VALUES(NULL)");
428			if ($ondemand && DB::isError($result) &&
429			$result->getCode() == DB_ERROR_NOSUCHTABLE) {
430			$repeat = 1;
431			$result = $this->createSequence($seq_name);
432			if (DB::isError($result)) {
433			return $result;
434			}
435			} else {
436			$repeat = 0;
437			}
438			} while ($repeat);
439			if (DB::isError($result)) {
440			return $result;
441			}
442			return fbsql_insert_id($this->connection);
443			}
444
445			// }}}
446			// {{{ createSequence()
447
448			function createSequence($seq_name)
449			{
450			$sqn = preg_replace('/[^a-z0-9_]/i', '_', $seq_name);
451			$seqname = sprintf($this->getOption("seqname_format"), $sqn);
452			return $this->query("CREATE TABLE ${seqname} ".
453			'(id INTEGER UNSIGNED AUTO_INCREMENT NOT NULL,'.
454			' PRIMARY KEY(id))');
455			}
456
457			// }}}
458			// {{{ dropSequence()
459
460			function dropSequence($seq_name)
461			{
462			$sqn = preg_replace('/[^a-z0-9_]/i', '_', $seq_name);
463			$seqname = sprintf($this->getOption("seqname_format"), $sqn);
464			return $this->query("DROP TABLE ${seqname} RESTRICT");
465			}
466
467			// }}}
468			// {{{ modifyQuery()
469
470			function modifyQuery($query)
471			{
472			if ($this->options['optimize'] == 'portability') {
473			// "DELETE FROM table" gives 0 affected rows in fbsql.
474			// This little hack lets you know how many rows were deleted.
475			if (preg_match('/^\sDELETE\s+FROM\s+(\S+)\s$/i', $query)) {
476			$query = preg_replace('/^\sDELETE\s+FROM\s+(\S+)\s$/',
477			'DELETE FROM \1 WHERE 1=1', $query);
478			}
479			}
480			return $query;
481			}
482
483			// }}}
484			// {{{ fbsqlRaiseError()
485
486			function fbsqlRaiseError($errno = null)
487			{
488			if ($errno === null) {
489			$errno = $this->errorCode(fbsql_errno($this->connection));
490			}
491			return $this->raiseError($errno, null, null, null,
492			fbsql_error($this->connection));
493			}
494
495			// }}}
496			// {{{ tableInfo()
497
498			function tableInfo($result, $mode = null) {
499			$count = 0;
500			$id = 0;
501			$res = array();
502
503			/*
504			* depending on $mode, metadata returns the following values:
505			*
506			* - mode is false (default):
507			* $result[]:
508			* [0]["table"] table name
509			* [0]["name"] field name
510			* [0]["type"] field type
511			* [0]["len"] field length
512			* [0]["flags"] field flags
513			*
514			* - mode is DB_TABLEINFO_ORDER
515			* $result[]:
516			* ["num_fields"] number of metadata records
517			* [0]["table"] table name
518			* [0]["name"] field name
519			* [0]["type"] field type
520			* [0]["len"] field length
521			* [0]["flags"] field flags
522			* ["order"][field name] index of field named "field name"
523			* The last one is used, if you have a field name, but no index.
524			* Test: if (isset($result['meta']['myfield'])) { ...
525			*
526			* - mode is DB_TABLEINFO_ORDERTABLE
527			* the same as above. but additionally
528			* ["ordertable"][table name][field name] index of field
529			* named "field name"
530			*
531			* this is, because if you have fields from different
532			* tables with the same field name * they override each
533			* other with DB_TABLEINFO_ORDER
534			*
535			* you can combine DB_TABLEINFO_ORDER and
536			* DB_TABLEINFO_ORDERTABLE with DB_TABLEINFO_ORDER \|
537			* DB_TABLEINFO_ORDERTABLE * or with DB_TABLEINFO_FULL
538			*/
539
540			// if $result is a string, then we want information about a
541			// table without a resultset
542			if (is_string($result)) {
543			$id = @fbsql_list_fields($this->dsn['database'],
544			$result, $this->connection);
545			if (empty($id)) {
546			return $this->fbsqlRaiseError();
547			}
548			} else { // else we want information about a resultset
549			$id = $result;
550			if (empty($id)) {
551			return $this->fbsqlRaiseError();
552			}
553			}
554
555			$count = @fbsql_num_fields($id);
556
557			// made this IF due to performance (one if is faster than $count if's)
558			if (empty($mode)) {
559			for ($i=0; $i<$count; $i++) {
560			$res[$i]['table'] = @fbsql_field_table ($id, $i);
561			$res[$i]['name'] = @fbsql_field_name ($id, $i);
562			$res[$i]['type'] = @fbsql_field_type ($id, $i);
563			$res[$i]['len'] = @fbsql_field_len ($id, $i);
564			$res[$i]['flags'] = @fbsql_field_flags ($id, $i);
565			}
566			} else { // full
567			$res["num_fields"]= $count;
568
569			for ($i=0; $i<$count; $i++) {
570			$res[$i]['table'] = @fbsql_field_table ($id, $i);
571			$res[$i]['name'] = @fbsql_field_name ($id, $i);
572			$res[$i]['type'] = @fbsql_field_type ($id, $i);
573			$res[$i]['len'] = @fbsql_field_len ($id, $i);
574			$res[$i]['flags'] = @fbsql_field_flags ($id, $i);
575			if ($mode & DB_TABLEINFO_ORDER) {
576			$res['order'][$res[$i]['name']] = $i;
577			}
578			if ($mode & DB_TABLEINFO_ORDERTABLE) {
579			$res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
580			}
581			}
582			}
583
584			// free the result only if we were called on a table
585			if (is_string($result)) {
586			@fbsql_free_result($id);
587			}
588			return $res;
589			}
590
591			// }}}
592			// {{{ getSpecialQuery()
593
594			/**
595			* Returns the query needed to get some backend info
596			* @param string $type What kind of info you want to retrieve
597			* @return string The SQL query string
598			*/
599			function getSpecialQuery($type)
600			{
601			switch ($type) {
602			case 'tables':
603			$sql = 'select "table_name" from information_schema.tables';
604			break;
605			default:
606			return null;
607			}
608			return $sql;
609			}
610
611			// }}}
612			}
613
614			// TODO/wishlist:
615			// longReadlen
616			// binmode
617
618			?>
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