Source for file ibase.php
Documentation is available at ibase.php
// vim: set et ts=4 sw=4 fdm=marker:
// +----------------------------------------------------------------------+
// +----------------------------------------------------------------------+
// | 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 |
// | 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: Lorenzo Alberton <l.alberton@quipo.it> |
// +----------------------------------------------------------------------+
// $Id: ibase.php,v 1.23 2004/04/23 17:06:46 lsmith Exp $
* MDB2 FireBird/InterBase driver
* @author Lorenzo Alberton <l.alberton@quipo.it>
$this->phptype = 'ibase';
$this->dbsyntax = 'ibase';
$this->supported['summary_functions'] = true;
// maybe this needs different handling for ibase and firebird?
$this->options['database_path'] = '';
$this->options['database_extension'] = '.gdb';
$this->options['default_text_field_length'] = 4000;
* This method is used to collect information about an error
$native_msg = @ibase_errmsg ();
$native_code = @ibase_errcode ();
// memo for the interbase php module hackers: we need something similar
// to mysql_errno() to retrieve error codes instead of this ugly hack
if (preg_match('/^([^0-9\-]+)([0-9\-]+)\s+(.*)$/', $native_msg, $m)) {
$native_code = (int) $m[2 ];
// try to interpret Interbase error code (that's why we need ibase_errno()
// in the interbase module to return the real error code)
if (isset ($ecode_map[$native_code])) {
$error = $ecode_map[$native_code];
if (!isset ($error_regexps)) {
foreach ($error_regexps as $regexp => $code) {
return array ($error, $native_code, $native_msg);
* Define whether database changes done on the database be automatically
* committed. This function may also implicitly start or end a transaction.
* @param boolean $auto_commit flag that indicates whether the database
* changes should be committed right after executing every query
* statement. If this argument is 0 a transaction implicitly started.
* Otherwise, if a transaction is in progress it is ended by committing
* any database changes that were pending.
* @return mixed MDB2_OK on success, a MDB2 error on failure
$this->debug(($auto_commit ? 'On' : 'Off'), 'autoCommit');
if ($this->connection && $auto_commit
$this->in_transaction = !$auto_commit;
* Commit the database changes done during a transaction that is in
* progress. This function may only be called when auto-committing is
* disabled, otherwise it will fail. Therefore, a new transaction is
* implicitly started after committing the pending changes.
* @return mixed MDB2_OK on success, a MDB2 error on failure
$this->debug('commit transaction', 'commit');
'commit: transaction changes are being auto commited');
if (!@ibase_commit ($this->connection)) {
'commit: could not commit');
* Cancel any database changes done during a transaction that is in
* progress. This function may only be called when auto-committing is
* disabled, otherwise it will fail. Therefore, a new transaction is
* implicitly started after canceling the pending changes.
* @return mixed MDB2_OK on success, a MDB2 error on failure
$this->debug('rolling back transaction', 'rollback');
'rollback: transactions can not be rolled back when changes are auto commited');
'rollback: Could not rollback a pending transaction: '.ibase_errmsg ());
if (!$this->transaction_id = @ibase_trans (IBASE_COMMITTED , $this->connection)) {
'rollback: Could not start a new transaction: '.ibase_errmsg ());
* Builds the string with path+dbname+extension
* @return string full database path+file
function _getDatabaseFile ($database_name)
* Does the grunt work of connecting to the database
* @return mixed connection resource on success, MDB2 Error Object on failure
function _doConnect ($database_name, $persistent = false )
$user = $dsninfo['username'];
$pw = $dsninfo['password'];
$dbhost = $dsninfo['hostspec'] ?
($dsninfo['hostspec']. ':'. $database_name) : $database_name;
$params[] = !empty ($user) ? $user : null;
$params[] = !empty ($pw) ? $pw : null;
$params[] = isset ($dsninfo['charset']) ? $dsninfo['charset'] : null;
$params[] = isset ($dsninfo['buffers']) ? $dsninfo['buffers'] : null;
$params[] = isset ($dsninfo['dialect']) ? $dsninfo['dialect'] : null;
$params[] = isset ($dsninfo['role']) ? $dsninfo['role'] : null;
$function = ($persistent ? 'ibase_pconnect' : 'ibase_connect');
@ibase_timefmt ("%Y-%m-%d %H:%M:%S", IBASE_TIMESTAMP );
@ibase_timefmt ("%Y-%m-%d", IBASE_DATE );
if (isset ($php_errormsg)) {
$error_msg = $php_errormsg;
$error_msg = 'Could not connect to FireBird/InterBase server';
* Connect to the database
* @return true on success, MDB2 Error Object on failure
$database_file = $this->_getDatabaseFile ($this->database_name);
if ($this->connection != 0 ) {
&& $this->connected_database_name == $database_file
&& $this->opened_persistent == $this->options['persistent']
@ibase_close ($this->connection);
if (!PEAR ::loadExtension ('interbase')) {
'connect: extension '. $this->phptype. ' is not compiled into PHP');
if (!empty ($this->database_name)) {
$connection = $this->_doConnect ($database_file, $this->options['persistent']);
$this->connection = $connection;
$this->connected_dsn = $this->dsn;
$this->connected_database_name = $database_file;
$this->opened_persistent = $this->options['persistent'];
@ibase_close ($this->connection);
* Close the database connection
if ($this->connection != 0 ) {
$result = $this->_doQuery ('END');
@ibase_close ($this->connection);
unset ($GLOBALS['_MDB2_databases'][$this->db_index]);
* @param string $query the SQL query
* @return mixed result identifier if query executed, else MDB2_error
function _doQuery ($query, $prepared_query = false )
$result = @ibase_query ($connection, $query);
if (ibase_errmsg () == 'Query argument missed') { //ibase_errcode() only available in PHP5
//connection lost, try again...
//rollback the failed transaction to prevent deadlock and execute the query again
$result = @ibase_query ($this->connection, $query);
// {{{ _executePrepared()
* Execute a prepared query statement.
* @param int $prepared_query argument is a handle that was returned by
* @param string $query query to be executed
* @param array $types array that contains the types of the columns in the result set
* @param mixed $result_class string which specifies which result class to use
* @param mixed $result_wrap_class string which specifies which class to wrap results in
* @return mixed a result handle or MDB2_OK on success, a MDB2 error on failure
function &_executePrepared ($prepared_query, $query, $types = null ,
$result_class = false , $result_wrap_class = false )
$offset = $this->row_offset;
$limit = $this->row_limit;
$this->row_offset = $this->row_limit = 0;
$this->debug($query, 'query');
$result = $this->_doQuery ($query, $prepared_query);
$result_class = $this->options['result_buffering']
? $this->options['buffered_result_class'] : $this->options['result_class'];
$class_name = sprintf($result_class, $this->phptype);
$result = & new $class_name($this, $result, $offset, $limit);
$err = $result->setResultTypes ($types);
if (!$result_wrap_class) {
$result_wrap_class = $this->options['result_wrap_class'];
if ($result_wrap_class) {
$result = & new $result_wrap_class($result);
* Send a query to the database and return any results
* @param string $query the SQL query
* @param array $types array that contains the types of the columns in the result set
* @param mixed $result_class string which specifies which result class to use
* @param mixed $result_wrap_class string which specifies which class to wrap results in
* @return mixed a result handle or MDB2_OK on success, a MDB2 error on failure
function &query($query, $types = null , $result_class = false , $result_wrap_class = false )
$result = & $this->_executePrepared (false , $query, $types, $result_class, $result_wrap_class);
* returns the affected rows of a query
* @return mixed MDB2 Error Object or number of rows
$affected_rows = @ibase_affected_rows ($this->connection);
if ($affected_rows === false ) {
* 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 )
$this->pushErrorHandling (PEAR_ERROR_RETURN );
$query = " SELECT GEN_ID($sequence_name, 1) as the_value FROM RDB\$DATABASE";
$this->popErrorHandling ();
// Since we are creating the sequence on demand
// we know the first id = 1 so initialize the
$result = $this->manager->createSequence ($seq_name, 2 );
'nextID: on demand sequence could not be created');
// First ID of a newly created sequence is 1
* returns the current id of a sequence
* @param string $seq_name name of the sequence
* @return mixed MDB2 Error Object or id
//$sequence_name = $this->getSequenceName($seq_name);
$query = " SELECT RDB\$GENERATOR_ID FROM RDB\$GENERATORS WHERE RDB\$GENERATOR_NAME='$sequence_name'";
'currID: Unable to select from ' . $seqname) ;
'currID: could not find value in sequence table');
class MDB2_Result_ibase extends MDB2_Result_Common
function MDB2_Result_ibase (&$mdb, &$result, $offset, $limit)
parent ::MDB2_Result_Common ($mdb, $result);
// {{{ _skipLimitOffset()
* Skip the first row of a result set.
* @param resource $result
* @return mixed a result handle or MDB2_OK on success, a MDB2 error on failure
function _skipLimitOffset ()
if (isset ($this->limits) && is_array($this->limits)) {
if ($this->rownum > $this->limits['limit']) {
while ($this->limits['count'] < $this->limits['offset']) {
++ $this->limits['count'];
if (!is_array(@ibase_fetch_row ($this->result))) {
$this->limits['count'] = $this->limits['offset'];
* fetch value from a result set
* @param int $rownum number of the row where the data can be found
* @param int $colnum field number where the data can be found
* @return mixed string on success, a MDB2 error on failure
function fetch ($rownum = 0 , $colnum = 0 )
$seek = $this->seek ($rownum);
$row = $this->fetchRow ($fetchmode);
* Fetch a row and insert the data into an existing array.
* @param int $fetchmode how the array data should be indexed
* @return int data array on success, a MDB2 error on failure
function fetchRow ($fetchmode = MDB2_FETCHMODE_DEFAULT )
if ($this->result === true) {
//query successfully executed, but without results...
$fetchmode = $this->mdb->fetchmode;
if (!$this->_skipLimitOffset ()) {
$row = @ibase_fetch_assoc ($this->result);
$row = @ibase_fetch_row ($this->result);
'fetchRow: resultset has already been freed');
if (isset ($this->types)) {
$row = $this->mdb->datatype ->convertResultRow ($this->types, $row);
$this->mdb->_rtrimArrayValues ($row);
$this->mdb->_convertEmptyArrayValuesToNull ($row);
* Retrieve the names of columns returned by the DBMS in a query result.
* @return mixed associative array variable
* that holds 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
function getColumnNames ()
$numcols = $this->numCols ();
for ($column = 0; $column < $numcols; $column++ ) {
$column_info = @ibase_field_info ($this->result, $column);
$columns[$column_info['name']] = $column;
* Count the number of columns returned by the DBMS in a query result.
* @return mixed integer value with the number of columns, a MDB2 error
if ($this->result === true) {
//query successfully executed, but without results...
return $this->mdb->raiseError ('numCols(): not a valid ibase resource');
$cols = @ibase_num_fields ($this->result);
'numCols: resultset has already been freed');
return $this->mdb->raiseError ();
* Free the internal resources associated with $result.
* @return boolean true on success, false if $result is invalid
$free = @ibase_free_result ($this->result);
return $this->mdb->raiseError ();
class MDB2_BufferedResult_ibase extends MDB2_Result_ibase
var $buffer_rownum = - 1;
function MDB2_BufferedResult_ibase (&$mdb, &$result, $offset, $limit)
parent ::MDB2_Result_ibase ($mdb, $result, $offset, $limit);
* @param int $rownum row number upto which the buffer should be filled
if the row number is null all rows are ready into the buffer
* @return boolean true on success, false on failure
function _fillBuffer ($rownum = null )
if (isset ($this->buffer) && is_array($this->buffer)) {
if (!end($this->buffer)) {
} else if (isset ($this->buffer[$rownum])) {
return (bool) $this->buffer[$rownum];
if (!$this->_skipLimitOffset ()) {
while ((is_null($rownum) || $this->buffer_rownum < $rownum)
&& (!isset ($this->limits) || $this->buffer_rownum < $this->limits['limit'])
&& ($buffer = @ibase_fetch_row ($this->result))
$this->buffer[$this->buffer_rownum] = $buffer;
$this->buffer[$this->buffer_rownum] = false;
} elseif (isset ($this->limits) && $this->buffer_rownum >= $this->limits['limit']) {
$this->buffer[$this->buffer_rownum] = false;
* Fetch a row and insert the data into an existing array.
* @param int $fetchmode how the array data should be indexed
* @return int data array on success, a MDB2 error on failure
function fetchRow ($fetchmode = MDB2_FETCHMODE_DEFAULT )
'fetchRow: resultset has already been freed');
$target_rownum = $this->rownum + 1;
$fetchmode = $this->mdb->fetchmode;
if (!$this->_fillBuffer ($target_rownum)) {
$row = $this->buffer[$target_rownum];
$column_names = $this->getColumnNames ();
foreach ($column_names as $name => $i) {
$column_names[$name] = $row[$i];
if (isset ($this->types)) {
$row = $this->mdb->datatype ->convertResultRow ($this->types, $row);
$this->mdb->_rtrimArrayValues ($row);
$this->mdb->_convertEmptyArrayValuesToNull ($row);
* 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 )
'seek: resultset has already been freed');
$this->rownum = $rownum - 1;
* check if the end of the result set has been reached
* @return mixed true or false on sucess, a MDB2 error on failure
'valid: resultset has already been freed');
if ($this->_fillBuffer ($this->rownum + 1 )) {
* returns the number of rows in a result object
* @return mixed MDB2 Error Object or the number of rows
'seek: resultset has already been freed');
return $this->buffer_rownum;
* Free the internal resources associated with $result.
* @return boolean true on success, false if $result is invalid
$this->buffer_rownum = null;
Documentation generated on Mon, 11 Mar 2019 10:15:47 -0400 by phpDocumentor 1.4.4. PEAR Logo Copyright © PHP Group 2004.
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