Source for file fbsql.php
Documentation is available at fbsql.php
// +----------------------------------------------------------------------+
// +----------------------------------------------------------------------+
// | Copyright (c) 1998-2004 Manuel Lemos, Tomas V.V.Cox, |
// | Stig. S. Bakken, Lukas Smith, Frank M. Kromann |
// | All rights reserved. |
// +----------------------------------------------------------------------+
// | MDB 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@dybnet.de> |
// +----------------------------------------------------------------------+
// $Id: fbsql.php,v 1.16.4.16 2004/04/08 17:19:00 lsmith Exp $
require_once('MDB/Common.php');
* - This driver is fairly untested at this time and shoukd be considered
* alpha quality for this reason
* @author Lukas Smith <smith@dybnet.de>
* @author Frank M. Kromann <frank@kromann.info>
$this->phptype = 'fbsql';
$this->dbsyntax = 'fbsql';
$this->supported['Sequences'] = 1;
$this->supported['Indexes'] = 1;
$this->supported['AffectedRows'] = 1;
$this->supported['Summaryfunctions'] = 1;
$this->supported['OrderByText'] = 1;
$this->supported['CurrId'] = 0;
$this->supported['SelectRowRanges'] = 1;
$this->supported['LOBs'] = 1;
$this->supported['Replace'] = 1;
$this->supported['SubSelects'] = 1;
$this->errorcode_map = array (
* Get the native error code of the last error (if any) that
* occured on the current connection.
* @return int native FrontBase error code
* This method is used to communicate an error and invoke error
* callbacks etc. Basically a wrapper for MDB::raiseError
* that checks for native error msgs.
* @param integer $errno error code
* @param string $message userinfo message
* @return object a PEAR error object
* 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 MDB_OK on success, a MDB error on failure
$this->debug('AutoCommit: '. ($auto_commit ? 'On' : 'Off'));
if (!isset ($this->supported['Transactions'])) {
'Auto-commit transactions: transactions are not in use'));
if ($this->auto_commit == $auto_commit) {
$result = $this->query('COMMIT');
$result = $this->query('SET COMMIT TRUE');
$result = $this->query('SET COMMIT FALSE');
$this->auto_commit = $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 MDB_OK on success, a MDB error on failure
$this->debug('Commit Transaction');
if (!isset ($this->supported['Transactions'])) {
'Commit transactions: transactions are not in use'));
if ($this->auto_commit) {
'Commit transactions: transaction changes are being auto commited'));
return($this->query('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 MDB_OK on success, a MDB error on failure
$this->debug('Rollback Transaction');
if (!isset ($this->supported['Transactions'])) {
'Rollback transactions: transactions are not in use'));
if ($this->auto_commit) {
'Rollback transactions: transactions can not be rolled back when changes are auto commited'));
return($this->query('ROLLBACK'));
* Connect to the database
* @return TRUE on success, MDB_Error on failure
$port = (isset ($this->port) ? $this->port : 0 );
$this->affected_rows = -1;
if(!PEAR ::loadExtension ($this->phptype)) {
NULL , NULL , 'extension '. $this->phptype. ' is not compiled into PHP',
$function = ($this->options['persistent'] ? 'fbsql_pconnect' : 'fbsql_connect');
$port > 0 ? $port : $this->host,
$this->user, $this->password);
if (isset ($this->supported['Transactions']) && !$this->auto_commit) {
if (!@fbsql_query ('SET AUTOCOMMIT FALSE;', $this->connection)) {
$this->affected_rows = -1;
$this->in_transaction = TRUE;
* all the RDBMS specific things needed close a DB connection
if (isset ($this->supported['Transactions']) && !$this->auto_commit) {
$this->affected_rows = -1;
unset ($GLOBALS['_MDB_databases'][$this->database]);
* Send a query to the database and return any results
* @param string $query the SQL query
* @param mixed $types array that contains the types of the columns in
* @return mixed a result handle or MDB_OK on success, a MDB error on failure
function query($query, $types = NULL )
$this->debug(" Query: $query" );
$this->last_query = $query;
$first = $this->first_selected_row;
$limit = $this->selected_row_limit;
$this->first_selected_row = $this->selected_row_limit = 0;
$query = str_replace('SELECT', " SELECT TOP($first,$limit)" , $query);
if ($this->database_name != '') {
if(!@fbsql_select_db ($this->database_name, $this->connection)) {
// Add ; to the end of the query. This is required by FrontBase
if ($result = @fbsql_query ($query, $this->connection)) {
$this->affected_rows = @fbsql_affected_rows ($this->connection);
$result_value = intval($result);
* Retrieve the names of columns returned by the DBMS in a query result.
* @param resource $result result identifier
* @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
$result_value = intval($result);
'Get column names: it was specified an inexisting result set'));
if (!isset ($this->columns[$result_value])) {
$this->columns[$result_value] = array ();
$columns = @fbsql_num_fields ($result);
for($column = 0; $column < $columns; $column++ ) {
$field_name = @fbsql_field_name ($result, $column);
if ($this->options['optimize'] == 'portability') {
$this->columns[$result_value][$field_name] = $column;
return($this->columns[$result_value]);
* Count the number of columns returned by the DBMS in a query result.
* @param resource $result result identifier
* @return mixed integer value with the number of columns, a MDB error
'numCols: it was specified an inexisting result set'));
return(@fbsql_num_fields ($result));
* check if the end of the result set has been reached
* @param resource $result result identifier
* @return mixed TRUE or FALSE on sucess, a MDB error on failure
$result_value = intval($result);
'End of result: attempted to check the end of an unknown result'));
* fetch value from a result set
* @param resource $result result identifier
* @param int $row number of the row where the data can be found
* @param int $field field number where the data can be found
* @return mixed string on success, a MDB error on failure
function fetch($result, $row, $field)
$result_value = intval($result);
if (intval($field) != $field) {
$res = @fbsql_result ($result, $row, $field);
if ($res === FALSE && $res != NULL ) {
* fetch a clob value from a result set
* @param resource $result result identifier
* @param int $row number of the row where the data can be found
* @param int $field field number where the data can be found
* @return mixed content of the specified data cell, a MDB error on failure,
return($this->fetchLob($result, $row, $field));
* fetch a blob value from a result set
* @param resource $result result identifier
* @param int $row number of the row where the data can be found
* @param int $field field number where the data can be found
* @return mixed content of the specified data cell, a MDB error on failure
return($this->fetchLob($result, $row, $field));
* convert a value to a RDBMS indepdenant MDB type
* @param mixed $value value to be converted
* @param int $type constant that specifies which type to convert to
* @return mixed converted value
return ($value == 'T') ? TRUE : FALSE;
return($this->_baseConvertResult ($value, $type));
* returns the number of rows in a result object
* @param ressource $result a valid result ressouce pointer
* @return mixed MDB_Error or the number of rows
return(@fbsql_num_rows ($result));
* Free the internal resources associated with $result.
* @param $result result identifier
* @return boolean TRUE on success, FALSE if $result is invalid
$result_value = intval($result);
if(isset ($this->columns[$result_value])) {
unset ($this->columns[$result_value]);
if(isset ($this->result_types[$result_value])) {
unset ($this->result_types[$result_value]);
return(@fbsql_free_result ($result));
// {{{ getIntegerDeclaration()
* Obtain DBMS specific SQL code portion needed to declare an integer type
* field to be used in statements like CREATE TABLE.
* @param string $name name the field to be declared.
* @param string $field associative array with the name of the properties
* of the field being declared as array indexes.
* Currently, the types of supported field
* properties are as follows:
* Boolean flag that indicates whether the field
* should be declared as unsigned integer if
* Integer value to be used as default for this
* Boolean flag that indicates whether this field is
* constrained to not be set to NULL.
* @return string DBMS specific SQL code portion that should be used to
* declare the specified field.
if (isset ($field['unsigned'])) {
$this->warnings[] = " unsigned integer field \"$name\" is being
declared as signed integer";
return(" $name INT". (isset ($field["default"])
? " DEFAULT ". $field["default"]
: ""). (isset ($field["notnull"]) ? " NOT NULL" : ""));
// {{{ getTextDeclaration()
* Obtain DBMS specific SQL code portion needed to declare an text type
* field to be used in statements like CREATE TABLE.
* @param string $name name the field to be declared.
* @param string $field associative array with the name of the properties
* of the field being declared as array indexes. Currently, the types
* of supported field properties are as follows:
* Integer value that determines the maximum length of the text
* field. If this argument is missing the field should be
* declared to have the longest length allowed by the DBMS.
* Text value to be used as default for this field.
* Boolean flag that indicates whether this field is constrained
* @return string DBMS specific SQL code portion that should be used to
* declare the specified field.
return((isset ($field["length"])
? " $name VARCHAR (". $field["length"]. ")"
? " DEFAULT ". $this->GetTextValue ($field["default"])
: ""). (isset ($field["notnull"]) ? " NOT NULL" : ""));
// {{{ getClobDeclaration()
* Obtain DBMS specific SQL code portion needed to declare an character
* large object type field to be used in statements like CREATE TABLE.
* @param string $name name the field to be declared.
* @param string $field associative array with the name of the
* properties of the field being declared as array
* indexes. Currently, the types of supported field
* properties are as follows:
* Integer value that determines the maximum length
* of the large object field. If this argument is
* missing the field should be declared to have the
* longest length allowed by the DBMS.
* Boolean flag that indicates whether this field
* is constrained to not be set to NULL.
* @return string DBMS specific SQL code portion that should be used to
* declare the specified field.
(isset ($field['notnull']) ? ' NOT NULL' : ''));
// {{{ getBlobDeclaration()
* Obtain DBMS specific SQL code portion needed to declare an binary large
* object type field to be used in statements like CREATE TABLE.
* @param string $name name the field to be declared.
* @param string $field associative array with the name of the properties
* of the field being declared as array indexes.
* Currently, the types of supported field
* properties are as follows:
* Integer value that determines the maximum length
* of the large object field. If this argument is
* missing the field should be declared to have the
* longest length allowed by the DBMS.
* Boolean flag that indicates whether this field is
* constrained to not be set to NULL.
* @return string DBMS specific SQL code portion that should be used to
* declare the specified field.
(isset ($field['notnull']) ? ' NOT NULL' : ''));
// {{{ getBooleanDeclaration()
* Obtain DBMS specific SQL code portion needed to declare a boolean type
* field to be used in statements like CREATE TABLE.
* @param string $name name the field to be declared.
* @param string $field associative array with the name of the properties
* of the field being declared as array indexes. Currently, the types
* of supported field properties are as follows:
* Boolean value to be used as default for this field.
* Boolean flag that indicates whether this field is constrained
* @return string DBMS specific SQL code portion that should be used to
* declare the specified field.
return(" $name BOOLEAN" . (isset ($field['default'])
: '') . (isset ($field['notnull']) ? ' NOT NULL' : ''));
// {{{ getDateDeclaration()
* Obtain DBMS specific SQL code portion needed to declare an date type
* field to be used in statements like CREATE TABLE.
* @param string $name name the field to be declared.
* @param string $field associative array with the name of the properties
* of the field being declared as array indexes.
* Currently, the types of supported field properties
* Date value to be used as default for this field.
* Boolean flag that indicates whether this field is
* constrained to not be set to NULL.
* @return string DBMS specific SQL code portion that should be used to
* declare the specified field.
(isset ($field['default']) ? " DEFAULT DATE'". $field['default']. "'" : '').
(isset ($field['notnull']) ? ' NOT NULL' : '')
// {{{ getTimestampDeclaration()
* Obtain DBMS specific SQL code portion needed to declare an timestamp
* type field to be used in statements like CREATE TABLE.
* @param string $name name the field to be declared.
* @param string $field associative array with the name of the properties
* of the field being declared as array indexes.
* Currently, the types of supported field
* properties are as follows:
* Time stamp value to be used as default for this
* Boolean flag that indicates whether this field is
* constrained to not be set to NULL.
* @return string DBMS specific SQL code portion that should be used to
* declare the specified field.
return(" $name TIMESTAMP".
(isset ($field['default']) ? " DEFAULT TIMESTAMP'". $field['default']. "'" : '').
(isset ($field['notnull']) ? ' NOT NULL' : '')
// {{{ getTimeDeclaration()
* Obtain DBMS specific SQL code portion needed to declare an time type
* field to be used in statements like CREATE TABLE.
* @param string $name name the field to be declared.
* @param string $field associative array with the name of the properties
* of the field being declared as array indexes.
* Currently, the types of supported field
* properties are as follows:
* Time value to be used as default for this field.
* Boolean flag that indicates whether this field is
* constrained to not be set to NULL.
* @return string DBMS specific SQL code portion that should be used to
* declare the specified field.
(isset ($field['default']) ? " DEFAULT TIME'". $field['default']. "'" : '').
(isset ($field['notnull']) ? ' NOT NULL' : '')
// {{{ getFloatDeclaration()
* Obtain DBMS specific SQL code portion needed to declare an float type
* field to be used in statements like CREATE TABLE.
* @param string $name name the field to be declared.
* @param string $field associative array with the name of the properties
* of the field being declared as array indexes.
* Currently, the types of supported field
* properties are as follows:
* Integer value to be used as default for this
* Boolean flag that indicates whether this field is
* constrained to not be set to NULL.
* @return string DBMS specific SQL code portion that should be used to
* declare the specified field.
(isset ($field['default']) ?
(isset ($field['notnull']) ? ' NOT NULL' : '')
// {{{ getDecimalDeclaration()
* Obtain DBMS specific SQL code portion needed to declare an decimal type
* field to be used in statements like CREATE TABLE.
* @param string $name name the field to be declared.
* @param string $field associative array with the name of the properties
* of the field being declared as array indexes.
* Currently, the types of supported field
* properties are as follows:
* Integer value to be used as default for this
* Boolean flag that indicates whether this field is
* constrained to not be set to NULL.
* @return string DBMS specific SQL code portion that should be used to
* declare the specified field.
(isset ($field['default']) ?
(isset ($field['notnull']) ? ' NOT NULL' : '')
* Convert a text value into a DBMS specific format that is suitable to
* compose query statements.
* @param resource $prepared_query query handle from prepare()
* @return string text string that represents the given argument value in
* a DBMS specific format.
$result = $this->readLob($clob, $data, $this->options['lob_buffer_length']);
$value .= $this->_quote ($data);
* free a character large object
* @param resource $prepared_query query handle from prepare()
unset ($this->lobs[$clob]);
* Convert a text value into a DBMS specific format that is suitable to
* compose query statements.
* @param resource $prepared_query query handle from prepare()
* @return string text string that represents the given argument value in
* a DBMS specific format.
$result = $this->readLob($blob, $data, $this->options['lob_buffer_length']);
* free a binary large object
* @param resource $prepared_query query handle from prepare()
unset ($this->lobs[$blob]);
* Convert a text value into a DBMS specific format that is suitable to
* compose query statements.
* @param string $value text string value that is intended to be converted.
* @return string text string that represents the given argument value in
* a DBMS specific format.
return(($value === NULL ) ? 'NULL' : ($value ? "True" : "False"));
* Convert a text value into a DBMS specific format that is suitable to
* compose query statements.
* @param string $value text string value that is intended to be converted.
* @return string text string that represents the given argument value in
* a DBMS specific format.
return(($value === NULL ) ? 'NULL' : " DATE'$value'" );
// {{{ getTimestampValue()
* Convert a text value into a DBMS specific format that is suitable to
* compose query statements.
* @param string $value text string value that is intended to be converted.
* @return string text string that represents the given argument value in
* a DBMS specific format.
return(($value === NULL ) ? 'NULL' : " TIMESTAMP'$value'" );
* Convert a text value into a DBMS specific format that is suitable to
* compose query statements.
* @param string $value text string value that is intended to be converted.
* @return string text string that represents the given argument value in
* a DBMS specific format.
return(($value === NULL ) ? 'NULL' : " TIME'$value'" );
* Convert a text value into a DBMS specific format that is suitable to
* compose query statements.
* @param string $value text string value that is intended to be converted.
* @return string text string that represents the given argument value in
* a DBMS specific format.
return(($value === NULL ) ? 'NULL' : (float) $value);
* Convert a text value into a DBMS specific format that is suitable to
* compose query statements.
* @param string $value text string value that is intended to be converted.
* @return string text string that represents the given argument value in
* a DBMS specific format.
* returns the next free id of a sequence
* @param string $seq_name name of the sequence
* @param boolean $ondemand when true the seqence is
* automatic created, if it
* @return mixed MDB_Error or id
function nextId($seq_name, $ondemand = TRUE )
$result = $this->query(" INSERT INTO $sequence_name VALUES (NULL)" );
// Since we are create the sequence on demand
// we know the first id = 1 so initialize the
'Next ID: on demand sequence could not be created'));
// First ID of a newly created sequence is 1
$value = intval(@fbsql_insert_id ());
$res = $this->query(" DELETE FROM $sequence_name WHERE ". $this->options['sequence_col_name']." < $value" );
$this->warnings[] = 'Next ID: could not delete previous sequence table values';
* Fetch a row and return data in an array.
* @param resource $result result identifier
* @param int $fetchmode ignored
* @param int $rownum the row number to fetch
* @return mixed data array or NULL on success, a MDB error on failure
function fetchInto($result, $fetchmode = MDB_FETCHMODE_DEFAULT , $rownum = NULL )
$result_value = intval($result);
if (!@fbsql_data_seek ($result, $rownum)) {
$fetchmode = $this->fetchmode;
$row = @fbsql_fetch_assoc ($result);
if (is_array($row) && $this->options['optimize'] == 'portability') {
$row = @fbsql_fetch_row ($result);
if($this->options['autofree']) {
if (isset ($this->result_types[$result_value])) {
* Move the internal fbsql result pointer to the next available result
* @param a valid result resource
* @return true if a result is available otherwise return false
return(@fbsql_next_result ($result));
* returns meta data about the result set
* @param resource $result result identifier
* @param mixed $mode depends on implementation
* @return array an nested array, or a MDB error
* depending on $mode, metadata returns the following values:
* - mode is false (default):
* [0]['table'] table name
* [0]['len'] field length
* [0]['flags'] field flags
* - mode is MDB_TABLEINFO_ORDER
* ['num_fields'] number of metadata records
* [0]['table'] table name
* [0]['len'] field length
* [0]['flags'] field flags
* ['order'][field name] index of field named 'field name'
* The last one is used, if you have a field name, but no index.
* Test: if (isset($result['meta']['myfield'])) { ...
* - mode is MDB_TABLEINFO_ORDERTABLE
* the same as above. but additionally
* ['ordertable'][table name][field name] index of field
* this is, because if you have fields from different
* tables with the same field name * they override each
* other with MDB_TABLEINFO_ORDER
* you can combine MDB_TABLEINFO_ORDER and
* MDB_TABLEINFO_ORDERTABLE with MDB_TABLEINFO_ORDER |
* MDB_TABLEINFO_ORDERTABLE * or with MDB_TABLEINFO_FULL
// if $result is a string, then we want information about a
// table without a resultset
$id = @fbsql_list_fields ($this->database_name,
} else { // else we want information about a resultset
$count = @fbsql_num_fields ($id);
// made this IF due to performance (one if is faster than $count if's)
for ($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);
$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);
$res['order'][$res[$i]['name']] = $i;
$res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
// free the result only if we were called on a table
Documentation generated on Mon, 11 Mar 2019 10:15:23 -0400 by phpDocumentor 1.4.4. PEAR Logo Copyright © PHP Group 2004.
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