Source for file sqlite.php
Documentation is available at sqlite.php
// vim: set et ts=4 sw=4 fdm=marker:
// +----------------------------------------------------------------------+
// | PHP versions 4 and 5 |
// +----------------------------------------------------------------------+
// | Copyright (c) 1998-2008 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: Lukas Smith <smith@pooteeweet.org> |
// +----------------------------------------------------------------------+
// $Id: sqlite.php 327310 2012-08-27 15:16:18Z danielc $
* @author Lukas Smith <smith@pooteeweet.org>
var $string_quoting = array ('start' => "'", 'end' => "'", 'escape' => "'", 'escape_pattern' => false );
$this->phptype = 'sqlite';
$this->dbsyntax = 'sqlite';
$this->supported['sequences'] = 'emulated';
$this->supported['indexes'] = true;
$this->supported['affected_rows'] = true;
$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['transactions'] = true;
$this->supported['savepoints'] = false;
$this->supported['sub_selects'] = true;
$this->supported['triggers'] = true;
$this->supported['auto_increment'] = true;
$this->supported['primary_key'] = false; // requires alter table implementation
$this->supported['result_introspection'] = false; // not implemented
$this->supported['prepared_statements'] = 'emulated';
$this->supported['identifier_quoting'] = true;
$this->supported['pattern_escaping'] = false;
$this->supported['new_link'] = false;
$this->options['DBA_username'] = false;
$this->options['DBA_password'] = false;
$this->options['base_transaction_name'] = '___php_MDB2_sqlite_auto_commit_off';
$this->options['fixed_float'] = 0;
$this->options['database_path'] = '';
$this->options['database_extension'] = '';
$this->options['server_version'] = '';
$this->options['max_identifiers_length'] = 128; //no real limit
* This method is used to collect information about an error
$native_code = @sqlite_last_error ($this->connection);
$native_msg = $this->_lasterror
// PHP 5.2+ prepends the function name to $php_errormsg, so we need
// this hack to work around it, per bug #9599.
$native_msg = preg_replace('/^sqlite[a-z_]+\(\)[^:]*: /', '', $native_msg);
if (empty ($error_regexps)) {
'/^no such table:/' => MDB2_ERROR_NOSUCHTABLE ,
'/^no such index:/' => MDB2_ERROR_NOT_FOUND ,
'/^(table|index) .* already exists$/' => MDB2_ERROR_ALREADY_EXISTS ,
'/PRIMARY KEY must be unique/i' => MDB2_ERROR_CONSTRAINT ,
'/is not unique/' => MDB2_ERROR_CONSTRAINT ,
'/columns .* are not unique/i' => MDB2_ERROR_CONSTRAINT ,
'/uniqueness constraint failed/' => MDB2_ERROR_CONSTRAINT ,
'/violates .*constraint/' => MDB2_ERROR_CONSTRAINT ,
'/may not be NULL/' => MDB2_ERROR_CONSTRAINT_NOT_NULL ,
'/^no such column:/' => MDB2_ERROR_NOSUCHFIELD ,
'/no column named/' => MDB2_ERROR_NOSUCHFIELD ,
'/column not present in both tables/i' => MDB2_ERROR_NOSUCHFIELD ,
'/^near ".*": syntax error$/' => MDB2_ERROR_SYNTAX ,
'/[0-9]+ values for [0-9]+ columns/i' => MDB2_ERROR_VALUE_COUNT_ON_ROW ,
foreach ($error_regexps as $regexp => $code) {
return array ($error, $native_code, $native_msg);
* Quotes a string so it can be safely used in a query. It will quote
* the text so it can safely be used within a query.
* @param string the input string to quote
* @param bool escape wildcards
* @return string quoted string
function escape($text, $escape_wildcards = false )
$text = @sqlite_escape_string ($text);
// {{{ beginTransaction()
* Start a transaction or set a savepoint.
* @param string name of a savepoint to set
* @return mixed MDB2_OK on success, a MDB2 error on failure
$this->debug ('Starting transaction/savepoint', __FUNCTION__ , array ('is_manip' => true , 'savepoint' => $savepoint));
if (null !== $savepoint) {
return $this->raiseError (MDB2_ERROR_UNSUPPORTED , null , null ,
'savepoints are not supported', __FUNCTION__ );
if ($this->in_transaction) {
return MDB2_OK; //nothing to do
if (!$this->destructor_registered && $this->opened_persistent) {
$this->destructor_registered = true;
$query = 'BEGIN TRANSACTION '. $this->options['base_transaction_name'];
$result = $this->_doQuery($query, true );
if (MDB2 ::isError ($result)) {
$this->in_transaction = true;
* Commit the database changes done during a transaction that is in
* progress or release a savepoint. This function may only be called when
* auto-committing is disabled, otherwise it will fail. Therefore, a new
* transaction is implicitly started after committing the pending changes.
* @param string name of a savepoint to release
* @return mixed MDB2_OK on success, a MDB2 error on failure
function commit($savepoint = null )
$this->debug ('Committing transaction/savepoint', __FUNCTION__ , array ('is_manip' => true , 'savepoint' => $savepoint));
if (!$this->in_transaction) {
return $this->raiseError (MDB2_ERROR_INVALID , null , null ,
'commit/release savepoint cannot be done changes are auto committed', __FUNCTION__ );
if (null !== $savepoint) {
return $this->raiseError (MDB2_ERROR_UNSUPPORTED , null , null ,
'savepoints are not supported', __FUNCTION__ );
$query = 'COMMIT TRANSACTION '. $this->options['base_transaction_name'];
$result = $this->_doQuery($query, true );
if (MDB2 ::isError ($result)) {
$this->in_transaction = false;
* Cancel any database changes done during a transaction or since a specific
* savepoint 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.
* @param string name of a savepoint to rollback to
* @return mixed MDB2_OK on success, a MDB2 error on failure
$this->debug ('Rolling back transaction/savepoint', __FUNCTION__ , array ('is_manip' => true , 'savepoint' => $savepoint));
if (!$this->in_transaction) {
return $this->raiseError (MDB2_ERROR_INVALID , null , null ,
'rollback cannot be done changes are auto committed', __FUNCTION__ );
if (null !== $savepoint) {
return $this->raiseError (MDB2_ERROR_UNSUPPORTED , null , null ,
'savepoints are not supported', __FUNCTION__ );
$query = 'ROLLBACK TRANSACTION '. $this->options['base_transaction_name'];
$result = $this->_doQuery($query, true );
if (MDB2 ::isError ($result)) {
$this->in_transaction = false;
// {{{ function setTransactionIsolation()
* Set the transacton isolation level.
* @param string standard isolation level
* READ UNCOMMITTED (allows dirty reads)
* READ COMMITTED (prevents dirty reads)
* REPEATABLE READ (prevents nonrepeatable reads)
* SERIALIZABLE (prevents phantom reads)
* @param array some transaction options:
* 'wait' => 'WAIT' | 'NO WAIT'
* 'rw' => 'READ WRITE' | 'READ ONLY'
* @return mixed MDB2_OK on success, a MDB2 error on failure
$this->debug ('Setting transaction isolation level', __FUNCTION__ , array ('is_manip' => true ));
return $this->raiseError (MDB2_ERROR_UNSUPPORTED , null , null ,
'isolation level is not supported: '. $isolation, __FUNCTION__ );
$query = " PRAGMA read_uncommitted=$isolation";
* Builds the string with path+dbname+extension
* @return string full database path+file
if ($database_name === '' || $database_name === ':memory:') {
return $this->options['database_path']. $database_name. $this->options['database_extension'];
* Connect to the database
* @return true on success, MDB2 Error Object on failure
//if (count(array_diff($this->connected_dsn, $this->dsn)) == 0
if (MDB2 ::areEquals ($this->connected_dsn, $this->dsn)
&& $this->connected_database_name == $database_file
&& $this->opened_persistent == $this->options['persistent']
return $this->raiseError (MDB2_ERROR_NOT_FOUND , null , null ,
'extension '. $this->phptype. ' is not compiled into PHP', __FUNCTION__ );
if (empty ($this->database_name)) {
return $this->raiseError (MDB2_ERROR_CONNECT_FAILED , null , null ,
'unable to establish a connection', __FUNCTION__ );
if ($database_file !== ':memory:') {
if (!touch($database_file)) {
return $this->raiseError (MDB2_ERROR_NOT_FOUND , null , null ,
'Could not create database file', __FUNCTION__ );
if (!isset ($this->dsn['mode'])
$mode = octdec($this->dsn['mode']);
if (!chmod($database_file, $mode)) {
return $this->raiseError (MDB2_ERROR_NOT_FOUND , null , null ,
'Could not be chmodded database file', __FUNCTION__ );
return $this->raiseError (MDB2_ERROR_NOT_FOUND , null , null ,
'Could not be found database file', __FUNCTION__ );
return $this->raiseError (MDB2_ERROR_INVALID , null , null ,
'Database is a directory name', __FUNCTION__ );
return $this->raiseError (MDB2_ERROR_ACCESS_VIOLATION , null , null ,
'Could not read database file', __FUNCTION__ );
$connect_function = ($this->options['persistent'] ? 'sqlite_popen' : 'sqlite_open');
$connection = @$connect_function($database_file);
$connection = @$connect_function($database_file, 0666 , $php_errormsg);
$this->_lasterror = $php_errormsg;
return $this->raiseError (MDB2_ERROR_CONNECT_FAILED , null , null ,
'unable to establish a connection', __FUNCTION__ );
$this->options['portability'] & MDB2_PORTABILITY_FIX_ASSOC_FIELD_NAMES )
@sqlite_query ("PRAGMA short_column_names = 1", $connection);
$this->connection = $connection;
$this->connected_dsn = $this->dsn;
$this->connected_database_name = $database_file;
$this->opened_persistent = $this->getoption ('persistent');
$this->dbsyntax = $this->dsn['dbsyntax'] ? $this->dsn['dbsyntax'] : $this->phptype;
* check if given database name is exists?
* @param string $name name of the database that should be checked
* @return mixed true/false on success, a MDB2 error on failure
* 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) {
$database_name = $this->database_name;
$persistent = $this->options['persistent'];
$this->dsn = $this->connected_dsn;
$this->database_name = $this->connected_database_name;
$this->options['persistent'] = $this->opened_persistent;
$this->database_name = $database_name;
$this->options['persistent'] = $persistent;
if (!$this->opened_persistent || $force) {
@sqlite_close ($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;
$result = $this->debug ($query, 'query', array ('is_manip' => $is_manip, 'when' => 'pre'));
if (MDB2 ::isError ($result)) {
if ($this->options['disable_query']) {
$result = $is_manip ? 0 : null;
if (null === $connection) {
$connection = $this->getConnection ();
if (MDB2 ::isError ($connection)) {
$function = $this->options['result_buffering']
? 'sqlite_query' : 'sqlite_unbuffered_query';
$result = @$function($query. ';', $connection);
} while (sqlite_last_error ($connection) == SQLITE_SCHEMA );
$result = @$function($query. ';', $connection, SQLITE_BOTH , $php_errormsg);
} while (sqlite_last_error ($connection) == SQLITE_SCHEMA );
$this->_lasterror = $php_errormsg;
if (0 === strpos($this->_lasterror, 'no such table')) {
$code = MDB2_ERROR_NOSUCHTABLE;
$err = $this->raiseError ($code, null , null ,
'Could not execute statement', __FUNCTION__ );
$this->debug ($query, 'query', array ('is_manip' => $is_manip, 'when' => 'post', 'result' => $result));
* 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 )
if (null === $connection) {
$connection = $this->getConnection ();
if (MDB2 ::isError ($connection)) {
return @sqlite_changes ($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 $offset start reading from given offset
* @return string modified query
if ($this->options['portability'] & MDB2_PORTABILITY_DELETE_COUNT ) {
if (preg_match('/^\s*DELETE\s+FROM\s+(\S+)\s*$/i', $query)) {
'DELETE FROM \1 WHERE 1=1', $query);
&& !preg_match('/LIMIT\s*\d(?:\s*(?:,|OFFSET)\s*\d+)?(?:[^\)]*)?$/i', $query)
if (substr($query, -1 ) == ';') {
$query = substr($query, 0 , -1 );
$query.= " LIMIT $limit";
$query.= " LIMIT $offset,$limit";
// {{{ getServerVersion()
* return version information about the server
* @param bool $native determines if the raw version string should be returned
* @return mixed array/string with version information or MDB2 error object
if ($this->connected_server_info) {
$server_info = $this->connected_server_info;
} elseif ($this->options['server_version']) {
$server_info = $this->options['server_version'];
$server_info = @sqlite_libversion ();
return $this->raiseError (MDB2_ERROR_UNSUPPORTED , null , null ,
'Requires either the "server_version" option or the sqlite_libversion() function', __FUNCTION__ );
$this->connected_server_info = $server_info;
$tmp = explode('.', $server_info, 3 );
'major' => isset ($tmp[0 ]) ? $tmp[0 ] : null ,
'minor' => isset ($tmp[1 ]) ? $tmp[1 ] : null ,
'patch' => isset ($tmp[2 ]) ? $tmp[2 ] : null ,
'native' => $server_info,
* 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 old row is deleted before the new row is inserted.
* The REPLACE type of query does not make part of the SQL standards. Since
* practically only SQLite 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.
* @param string $table name of the table on which the REPLACE query will
* @param array $fields associative array that describes the fields and the
* values that will be inserted or updated in the specified table. The
* indexes of the array are the names of all the fields of the table. The
* values of the array are also associative arrays that describe the
* values and other properties of the table fields.
* Here follows a list of field properties that need to be specified:
* Value to be assigned to the specified field. This value may be
* of specified in database independent type format as this
* function can perform the necessary datatype conversions.
* this property is required unless the Null property
* Name of the type of the field. Currently, all types Metabase
* are supported except for clob and blob.
* Default: no type conversion
* Boolean property that indicates that the value for this field
* The default value for fields missing in INSERT queries may be
* specified the definition of a table. Often, the default value
* is already null, but since the REPLACE may be emulated using
* an UPDATE query, make sure that all fields of the table are
* listed in this function argument array.
* Boolean property that indicates that this field should be
* handled as a primary key or at least as part of the compound
* unique index of the table that will determine the row that will
* updated if it exists or inserted a new row otherwise.
* This function will fail if no key field is specified or if the
* value of a key field is set to null because fields that are
* part of unique index they may not be null.
* @return mixed MDB2_OK on success, a MDB2 error on failure
for (reset($fields); $colnum < $count; next($fields), $colnum++ ) {
$query.= $this->quoteIdentifier ($name, true );
if (isset ($fields[$name]['null']) && $fields[$name]['null']) {
$type = isset ($fields[$name]['type']) ? $fields[$name]['type'] : null;
$value = $this->quote ($fields[$name]['value'], $type);
if (MDB2 ::isError ($value)) {
if (isset ($fields[$name]['key']) && $fields[$name]['key']) {
return $this->raiseError (MDB2_ERROR_CANNOT_REPLACE , null , null ,
'key value '. $name. ' may not be NULL', __FUNCTION__ );
return $this->raiseError (MDB2_ERROR_CANNOT_REPLACE , null , null ,
'not specified which fields are keys', __FUNCTION__ );
$connection = $this->getConnection ();
if (MDB2 ::isError ($connection)) {
$table = $this->quoteIdentifier ($table, true );
$query = " REPLACE INTO $table ($query) VALUES ($values)";
$result = $this->_doQuery($query, true , $connection);
if (MDB2 ::isError ($result)) {
return $this->_affectedRows ($connection, $result);
* Returns the next free id of a sequence
* @param string $seq_name name of the sequence
* @param boolean $ondemand when true the sequence is
* automatic created, if it
* @return mixed MDB2 Error Object or id
function nextID($seq_name, $ondemand = true )
$sequence_name = $this->quoteIdentifier ($this->getSequenceName ($seq_name), true );
$seqcol_name = $this->options['seqcol_name'];
$query = " INSERT INTO $sequence_name ($seqcol_name) VALUES (NULL)";
$this->pushErrorHandling (PEAR_ERROR_RETURN );
$this->expectError (MDB2_ERROR_NOSUCHTABLE );
$result = $this->_doQuery($query, true );
$this->popErrorHandling ();
if (MDB2 ::isError ($result)) {
if ($ondemand && $result->getCode () == MDB2_ERROR_NOSUCHTABLE ) {
$this->loadModule ('Manager', null , true );
$result = $this->manager->createSequence ($seq_name);
if (MDB2 ::isError ($result)) {
return $this->raiseError ($result, null , null ,
'on demand sequence '. $seq_name. ' could not be created', __FUNCTION__ );
return $this->nextID($seq_name, false );
$query = " DELETE FROM $sequence_name WHERE $seqcol_name < $value";
$result = $this->_doQuery($query, true );
if (MDB2 ::isError ($result)) {
$this->warnings[] = 'nextID: could not delete previous sequence table values from '. $seq_name;
* Returns the autoincrement ID if supported or $id or fetches the current
* ID in a sequence called: $table.(empty($field) ? '' : '_'.$field)
* @param string $table name of the table into which a new row was inserted
* @param string $field name of the field into which a new row was inserted
* @return mixed MDB2 Error Object or id
$connection = $this->getConnection ();
if (MDB2 ::isError ($connection)) {
$value = @sqlite_last_insert_rowid ($connection);
return $this->raiseError (null , null , null ,
'Could not get last insert ID', __FUNCTION__ );
* 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');
* MDB2 SQLite result driver
* @author Lukas Smith <smith@pooteeweet.org>
* 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 (MDB2 ::isError ($seek)) {
if ($fetchmode == MDB2_FETCHMODE_DEFAULT ) {
$fetchmode = $this->db->fetchmode;
if ( $fetchmode == MDB2_FETCHMODE_ASSOC
|| $fetchmode == MDB2_FETCHMODE_OBJECT
$row = @sqlite_fetch_array ($this->result, SQLITE_ASSOC );
&& $this->db->options ['portability'] & MDB2_PORTABILITY_FIX_CASE
$row = @sqlite_fetch_array ($this->result, SQLITE_NUM );
if (false === $this->result) {
$err = $this->db->raiseError (MDB2_ERROR_NEED_MORE_DATA , null , null ,
'resultset has already been freed', __FUNCTION__ );
$mode = $this->db->options ['portability'] & MDB2_PORTABILITY_EMPTY_TO_NULL;
if ($this->db->options ['portability'] & MDB2_PORTABILITY_RTRIM ) {
if (empty ($this->types)) {
$mode += MDB2_PORTABILITY_RTRIM;
$this->db->_fixResultArrayValues ($row, $mode);
if ( ( $fetchmode != MDB2_FETCHMODE_ASSOC
&& $fetchmode != MDB2_FETCHMODE_OBJECT )
$row = $this->db->datatype ->convertResultRow ($this->types, $row, $rtrim);
} elseif (($fetchmode == MDB2_FETCHMODE_ASSOC
|| $fetchmode == MDB2_FETCHMODE_OBJECT )
&& !empty ($this->types_assoc)
$row = $this->db->datatype ->convertResultRow ($this->types_assoc, $row, $rtrim);
if (!empty ($this->values)) {
$this->_assignBindColumns ($row);
if ($fetchmode === MDB2_FETCHMODE_OBJECT ) {
$object_class = $this->db->options ['fetch_class'];
if ($object_class == 'stdClass') {
$rowObj = new $object_class($row);
* Retrieve the names of columns returned by the DBMS in a query result.
* @return mixed Array variable that holds the names of columns as keys
* or an MDB2 error on failure.
* Some DBMS may not return any columns when the result set
* does not contain any rows.
function _getColumnNames ()
if (MDB2 ::isError ($numcols)) {
for ($column = 0; $column < $numcols; $column++ ) {
$column_name = @sqlite_field_name ($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
$cols = @sqlite_num_fields ($this->result);
if (false === $this->result) {
return $this->db->raiseError (MDB2_ERROR_NEED_MORE_DATA , null , null ,
'resultset has already been freed', __FUNCTION__ );
if (null === $this->result) {
return count($this->types);
return $this->db->raiseError (null , null , null ,
'Could not get column count', __FUNCTION__ );
* MDB2 SQLite buffered result driver
* @author Lukas Smith <smith@pooteeweet.org>
* 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 (!@sqlite_seek ($this->result, $rownum)) {
if (false === $this->result) {
return $this->db->raiseError (MDB2_ERROR_NEED_MORE_DATA , null , null ,
'resultset has already been freed', __FUNCTION__ );
if (null === $this->result) {
return $this->db->raiseError (MDB2_ERROR_INVALID , null , null ,
'tried to seek to an invalid row number ('. $rownum. ')', __FUNCTION__ );
$this->rownum = $rownum - 1;
* Check if the end of the result set has been reached
* @return mixed true or false on sucess, a MDB2 error on failure
if (MDB2 ::isError ($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
$rows = @sqlite_num_rows ($this->result);
if (false === $this->result) {
return $this->db->raiseError (MDB2_ERROR_NEED_MORE_DATA , null , null ,
'resultset has already been freed', __FUNCTION__ );
if (null === $this->result) {
return $this->db->raiseError (null , null , null ,
'Could not get row count', __FUNCTION__ );
* MDB2 SQLite statement driver
* @author Lukas Smith <smith@pooteeweet.org>
Documentation generated on Mon, 11 Mar 2019 15:51:27 -0400 by phpDocumentor 1.4.4. PEAR Logo Copyright © PHP Group 2004.
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