Source for file fbsql.php
Documentation is available at fbsql.php
// vim: set et ts=4 sw=4 fdm=marker:
// +----------------------------------------------------------------------+
// | PHP versions 4 and 5 |
// +----------------------------------------------------------------------+
// | Copyright (c) 1998-2006 Manuel Lemos, Tomas V.V.Cox, |
// | Stig. S. Bakken, Lukas Smith, Frank M. Kromann |
// | 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 |
// | 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: fbsql.php,v 1.93 2006/04/16 11:55:14 lsmith Exp $
* @author Lukas Smith <smith@pooteeweet.org>
* @author Frank M. Kromann <frank@kromann.info>
$this->phptype = 'fbsql';
$this->dbsyntax = 'fbsql';
$this->supported['sequences'] = 'emulated';
$this->supported['indexes'] = true;
$this->supported['affected_rows'] = true;
$this->supported['transactions'] = true;
$this->supported['summary_functions'] = true;
$this->supported['order_by_text'] = true;
$this->supported['current_id'] = 'emulated';
$this->supported['limit_queries'] = 'emulated';
$this->supported['LOBs'] = true;
$this->supported['replace'] = 'emulated';
$this->supported['sub_selects'] = true;
$this->supported['auto_increment'] = false; // not implemented
$this->supported['primary_key'] = false; // not implemented
$this->supported['result_introspection'] = true;
* This method is used to collect information about an error
$native_code = @fbsql_errno ($this->connection);
$native_msg = @fbsql_error ($this->connection);
$native_code = @fbsql_errno ();
$native_msg = @fbsql_error ();
85 => MDB2_ERROR_ALREADY_EXISTS ,
108 => MDB2_ERROR_SYNTAX ,
116 => MDB2_ERROR_NOSUCHTABLE ,
124 => MDB2_ERROR_VALUE_COUNT_ON_ROW ,
215 => MDB2_ERROR_NOSUCHFIELD ,
217 => MDB2_ERROR_INVALID_NUMBER ,
226 => MDB2_ERROR_NOSUCHFIELD ,
231 => MDB2_ERROR_INVALID ,
239 => MDB2_ERROR_TRUNCATED ,
251 => MDB2_ERROR_SYNTAX ,
266 => MDB2_ERROR_NOT_FOUND ,
357 => MDB2_ERROR_CONSTRAINT_NOT_NULL ,
358 => MDB2_ERROR_CONSTRAINT ,
360 => MDB2_ERROR_CONSTRAINT ,
361 => MDB2_ERROR_CONSTRAINT ,
if (isset ($ecode_map[$native_code])) {
$error = $ecode_map[$native_code];
return array ($error, $native_code, $native_msg);
// {{{ beginTransaction()
* @return mixed MDB2_OK on success, a MDB2 error on failure
$this->debug ('starting transaction', 'beginTransaction');
if ($this->in_transaction) {
return MDB2_OK; //nothing to do
if (!$this->destructor_registered && $this->opened_persistent) {
$this->destructor_registered = true;
$result = $this->_doQuery('SET COMMIT FALSE;', true );
if (PEAR ::isError ($result)) {
$this->in_transaction = true;
* Commit the database changes done during a transaction that is in
* @return mixed MDB2_OK on success, a MDB2 error on failure
$this->debug ('commit transaction', 'commit');
if (!$this->in_transaction) {
return $this->raiseError (MDB2_ERROR , null , null ,
'commit: transaction changes are being auto commited');
$result = $this->_doQuery('COMMIT;', true );
if (PEAR ::isError ($result)) {
$result = $this->_doQuery('SET COMMIT TRUE;', true );
if (PEAR ::isError ($result)) {
$this->in_transaction = false;
* Cancel any database changes done during a transaction that is in
* @return mixed MDB2_OK on success, a MDB2 error on failure
$this->debug ('rolling back transaction', 'rollback');
if (!$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)) {
$result = $this->_doQuery('SET COMMIT TRUE;', true );
if (PEAR ::isError ($result)) {
$this->in_transaction = false;
* Connect to the database
* @return true on success, MDB2 Error Object on failure
&& $this->opened_persistent == $this->options['persistent']
if (!PEAR ::loadExtension ($this->phptype)) {
return $this->raiseError (MDB2_ERROR_NOT_FOUND , null , null ,
'connect: extension '. $this->phptype. ' is not compiled into PHP');
if (isset ($this->dsn['charset']) && !empty ($this->dsn['charset'])) {
return $this->raiseError (MDB2_ERROR_UNSUPPORTED ,
null , null , 'Unable to set client charset: '. $this->dsn['charset']);
$this->dsn['hostspec'] ? $this->dsn['hostspec'] : 'localhost',
$this->dsn['username'] ? $this->dsn['username'] : null ,
$this->dsn['password'] ? $this->dsn['password'] : null ,
$connect_function = $this->options['persistent'] ? 'fbsql_pconnect' : 'fbsql_connect';
return $this->raiseError (MDB2_ERROR_CONNECT_FAILED );
$this->connection = $connection;
$this->connected_dsn = $this->dsn;
$this->connected_database_name = '';
$this->opened_persistent = $this->options['persistent'];
$this->dbsyntax = $this->dsn['dbsyntax'] ? $this->dsn['dbsyntax'] : $this->phptype;
* Log out and disconnect from the database.
* @param boolean $force if the disconnect should be forced even if the
* connection is opened persistently
* @return mixed true on success, false if not connected and error
if ($this->in_transaction) {
if (!$this->opened_persistent || $force) {
@fbsql_close ($this->connection);
return parent ::disconnect ($force);
* @param string $query query
* @param boolean $is_manip if the query is a manipulation query
* @param resource $connection
* @param string $database_name
* @return result or error object
function _doQuery($query, $is_manip = false , $connection = null , $database_name = null )
$this->last_query = $query;
$this->debug ($query, 'query', $is_manip);
if ($this->options['disable_query']) {
$connection = $this->getConnection ();
if (PEAR ::isError ($connection)) {
$database_name = $this->database_name;
if ($database_name != $this->connected_database_name) {
if (!@fbsql_select_db ($database_name, $connection)) {
return $this->raiseError ();
$this->connected_database_name = $database_name;
$result = @fbsql_query ($query, $connection);
return $this->raiseError ();
* returns the number of rows affected
* @param resource $result
* @param resource $connection
* @return mixed MDB2 Error Object or the number of rows affected
function _affectedRows ($connection, $result = null )
$connection = $this->getConnection ();
if (PEAR ::isError ($connection)) {
return @fbsql_affected_rows ($connection);
* Changes a query string for various DBMS specific reasons
* @param string $query query to modify
* @param boolean $is_manip if it is a DML query
* @param integer $limit limit the number of rows
* @param integer $offset start reading from given offset
* @return string modified query
" \\1SELECT TOP($limit)" , $query);
" \\1SELECT TOP($offset,$limit)" , $query);
// Add ; to the end of the query. This is required by FrontBase
* returns the next free id of a sequence
* @param string $seq_name name of the sequence
* @param boolean $ondemand when true the seqence is
* automatic created, if it
* @return mixed MDB2 Error Object or id
function nextID($seq_name, $ondemand = true )
$sequence_name = $this->quoteIdentifier ($this->getSequenceName ($seq_name), true );
$seqcol_name = $this->quoteIdentifier ($this->options['seqcol_name'], true );
$query = " INSERT INTO $sequence_name ($seqcol_name) VALUES (NULL);";
$this->expectError (MDB2_ERROR_NOSUCHTABLE );
$result = $this->_doQuery($query, true );
if (PEAR ::isError ($result)) {
if ($ondemand && $result->getCode () == MDB2_ERROR_NOSUCHTABLE ) {
$this->loadModule ('Manager', null , true );
// Since we are creating the sequence on demand
// we know the first id = 1 so initialize the
$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');
// First ID of a newly created sequence is 1
$query = " DELETE FROM $sequence_name WHERE $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;
* 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
$connection = $this->getConnection ();
if (PEAR ::isError ($connection)) {
$value = @fbsql_insert_id ($connection);
return $this->raiseError ();
* returns the current id of a sequence
* @param string $seq_name name of the sequence
* @return mixed MDB2 Error Object or id
$sequence_name = $this->quoteIdentifier ($this->getSequenceName ($seq_name), true );
$seqcol_name = $this->quoteIdentifier ($this->options['seqcol_name'], true );
$query = " SELECT MAX($seqcol_name) FROM $sequence_name";
return $this->queryOne ($query, 'integer');
* Fetch a row and insert the data into an existing array.
* @param int $fetchmode how the array data should be indexed
* @param int $rownum number of the row where the data can be found
* @return int data array on success, a MDB2 error on failure
function &fetchRow($fetchmode = MDB2_FETCHMODE_DEFAULT , $rownum = null )
$seek = $this->seek ($rownum);
if (PEAR ::isError ($seek)) {
if ($fetchmode == MDB2_FETCHMODE_DEFAULT ) {
$fetchmode = $this->db->fetchmode;
if ($fetchmode & MDB2_FETCHMODE_ASSOC ) {
$row = @fbsql_fetch_assoc ($this->result);
&& $this->db->options ['portability'] & MDB2_PORTABILITY_FIX_CASE
$row = @fbsql_fetch_row ($this->result);
if ($this->result === false ) {
$err = & $this->db->raiseError (MDB2_ERROR_NEED_MORE_DATA , null , null ,
'fetchRow: resultset has already been freed');
if ($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 = &new $object_class($row);
* 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
* a MDB2 error on failure
function _getColumnNames ()
if (PEAR ::isError ($numcols)) {
for ($column = 0; $column < $numcols; $column++ ) {
$column_name = @fbsql_field_name ($this->result, $column);
$columns[$column_name] = $column;
if ($this->db->options ['portability'] & MDB2_PORTABILITY_FIX_CASE ) {
* 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
$cols = @fbsql_num_fields ($this->result);
if ($this->result === false ) {
return $this->db->raiseError (MDB2_ERROR_NEED_MORE_DATA , null , null ,
'numCols: resultset has already been freed');
} elseif (is_null($this->result)) {
return count($this->types);
return $this->db->raiseError ();
* Move the internal result pointer to the next available result
* Currently not supported
* @return true on success, false if there is no more result set or an error object on failure
if ($this->result === false ) {
return $this->db->raiseError (MDB2_ERROR_NEED_MORE_DATA , null , null ,
'nextResult: resultset has already been freed');
} elseif (is_null($this->result)) {
return @fbsql_next_result ($this->result);
* Free the internal resources associated with result.
* @return boolean true on success, false if result is invalid
$free = @fbsql_free_result ($this->result);
return $this->db->raiseError ();
* seek to a specific row in a result set
* @param int $rownum number of the row where the data can be found
* @return mixed MDB2_OK on success, a MDB2 error on failure
function seek($rownum = 0 )
if ($this->rownum != ($rownum - 1 ) && !@fbsql_data_seek ($this->result, $rownum)) {
if ($this->result === false ) {
return $this->db->raiseError (MDB2_ERROR_NEED_MORE_DATA , null , null ,
'seek: resultset has already been freed');
} elseif (is_null($this->result)) {
return $this->db->raiseError (MDB2_ERROR_INVALID , null , null ,
'seek: tried to seek to an invalid row number ('. $rownum. ')');
$this->rownum = $rownum - 1;
* check if the end of the result set has been reached
* @return mixed true or false on sucess, a MDB2 error on failure
if (PEAR ::isError ($numrows)) {
return $this->rownum < ($numrows - 1 );
* returns the number of rows in a result object
* @return mixed MDB2 Error Object or the number of rows
$rows = @fbsql_num_rows ($this->result);
if ($this->result === false ) {
return $this->db->raiseError (MDB2_ERROR_NEED_MORE_DATA , null , null ,
'numRows: resultset has already been freed');
} elseif (is_null($this->result)) {
return $this->db->raiseError ();
Documentation generated on Mon, 11 Mar 2019 14:39:10 -0400 by phpDocumentor 1.4.4. PEAR Logo Copyright © PHP Group 2004.
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