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<?php
/**
* $Id: sqlite.php,v 1.1.2.7.2.8 2006/06/29 19:31:11 matteo Exp $
*
* db_sqlite
*
* The db_sqlite class provides methods and functions for a sqlite database.
*
* @author Thorsten Rinne <thorsten@phpmyfaq.de>
* @author Johannes Schlüter <johannes@php.net>
* @package db_sqlite
* @since 2005-06-27
*
* Copyright: (c) 2006 phpMyFAQ Team
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
* License for the specific language governing rights and limitations
* under the License.
*/
class db_sqlite
{
/**
* The connection object
*
* @var mixed
* @see connect(), query(), dbclose()
*/
private $conn = false;
/**
* The query log string
*
* @var string
* @see query()
*/
private $sqllog = '';
/**
* Constructor
*
* @access public
* @author Thorsten Rinne <thorsten@phpmyfaq.de>
* @since 2005-06-27
*/
public function __construct()
{
}
/**
* Connects to the database.
*
* This function connects to a sqlite database
*
* @param string
* @return boolean
* @access public
* @author Thorsten Rinne <thorsten@phpmyfaq.de>
* @since 2005-06-27
*/
public function connect($host, $user = false, $passwd = false, $db = false)
{
$this->conn = sqlite_open($host, 0666);
if (!$this->conn) {
print "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n";
print "<html xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\" lang=\"en\">\n";
print "<head>\n";
print " <title>phpMyFAQ Error</title>\n";
print " <meta http-equiv=\"content-type\" content=\"application/xhtml+xml; charset=utf-8\" />\n";
print "</head>\n";
print "<body>\n";
print "<p align=\"center\">The connection to the sqlite server could not be established.</p>\n";
print "<p align=\"center\">The error message of the sqlite server:<br />".sqlite_error_string(sqlite_last_error($this->conn))."</p>\n";
print "</body>\n";
print "</html>";
return false;
}
return true;
}
/**
* Sends a query to the database.
*
* This function sends a query to the database.
*
* @param string $query
* @return mixed $result
* @access public
* @author Thorsten Rinne <thorsten@phpmyfaq.de>
* @since 2005-06-27
*/
public function query($query)
{
$this->sqllog .= $query."<br />\n";
return sqlite_query($this->conn, $query);
}
/**
* Escapes a string for use in a query
*
* @param string
* @return string
* @access public
* @author Thorsten Rinne <thorsten@phpmyfaq.de>
* @since 2004-12-16
*/
public function escape_string($string)
{
return sqlite_escape_string($string);
}
/**
* Fetch a result row as an object
*
* This function fetches a result row as an object.
*
* @param mixed $result
* @return mixed
* @access public
* @author Thorsten Rinne <thorsten@phpmyfaq.de>
* @since 2005-06-27
*/
public function fetch_object($result)
{
return sqlite_fetch_object($result);
}
/**
* Fetch a result row as an object
*
* This function fetches a result as an associative array.
*
* @param mixed $result
* @return array
* @access public
* @author Thorsten Rinne <thorsten@phpmyfaq.de>
* @since 2005-06-27
*/
public function fetch_assoc($result)
{
return sqlite_fetch_array($result, SQLITE_ASSOC);
}
/**
* Number of rows in a result
*
* @param mixed $result
* @return integer
* @access public
* @author Thorsten Rinne <thorsten@phpmyfaq.de>
* @since 2005-06-27
*/
public function num_rows($result)
{
return sqlite_num_rows($result);
}
/**
* Returns the ID of the latest insert
*
* @return integer
* @access public
* @author Thorsten Rinne <thorsten@phpmyfaq.de>
* @since 2005-06-27
*/
public function insert_id($table, $field)
{
return sqlite_last_insert_rowid($this->conn);
}
/**
* Logs the queries
*
* @param mixed $result
* @return integer
* @access public
* @author Thorsten Rinne <thorsten@phpmyfaq.de>
* @since 2005-06-27
*/
public function sqllog()
{
return $this->sqllog;
}
/**
* Generates a result based on search a search string.
*
* This function generates a result set based on a search string.
*
* @access public
* @author Thorsten Rinne <thorsten@phpmyfaq.de>
* @author Matteo scaramuccia <matteo@scaramuccia.com>
* @since 2005-06-27
*/
public function search($table, $assoc, $joinedTable = '', $joinAssoc = array(), $match = array(), $string = '', $cond = array(), $orderBy = array())
{
$string = trim($string);
$fields = '';
$join = '';
$joined = '';
$where = '';
foreach ($assoc as $field) {
if (empty($fields)) {
$fields = $field;
} else {
$fields .= ", ".$field;
}
}
if (isset($joinedTable) && $joinedTable != '') {
$joined .= ' LEFT JOIN '.$joinedTable.' ON ';
}
if (is_array($joinAssoc)) {
foreach ($joinAssoc as $joinedFields) {
$join .= $joinedFields.' AND ';
}
$joined .= substr($join, 0, -4);
}
$keys = preg_split("/\s+/", $string);
$numKeys = count($keys);
$numMatch = count($match);
for ($i = 0; $i < $numKeys; $i++) {
if (strlen($where) != 0 ) {
$where = $where." OR";
}
$where = $where." (";
for ($j = 0; $j < $numMatch; $j++) {
if ($j != 0) {
$where = $where." OR ";
}
$where = $where.$match[$j]." LIKE '%".$keys[$i]."%'";
}
$where .= ")";
}
foreach ($cond as $field => $data) {
if (empty($where)) {
$where .= $field." = ".$data;
} else {
$where .= " AND ".$field." = ".$data;
}
}
$query = "SELECT ".$fields." FROM ".$table.$joined." WHERE";
if (!empty($where)) {
$query .= " (".$where.")";
}
if (is_numeric($string)) {
$query = "SELECT ".$fields." FROM ".$table.$joined." WHERE ".$match." = ".$string;
}
$firstOrderBy = true;
foreach ($orderBy as $field) {
if ($firstOrderBy) {
$query .= " ORDER BY ".$field;
$firstOrderBy = false;
} else {
$query .= ", ".$field;
}
}
return $this->query($query);
}
/**
* Returns the error string.
*
* This function returns the table status.
*
* @access public
* @return array
* @author Thorsten Rinne <thorsten@phpmyfaq.de>
* @since 2005-06-27
*/
public function getTableStatus()
{
$arr = array();
$result = $this->query("SELECT name FROM sqlite_master WHERE type='table' ORDER BY name");
while ($row = $this->fetch_assoc($result)) {
$num_result = $this->query('SELECT * FROM '.$row['name']);
$arr[$row['name']] = $this->num_rows($num_result);
}
return $arr;
}
/**
* Returns the next ID of a table
*
* This function is a replacement for sqlite's auto-increment so that
* we don't need it anymore.
*
* @param string the name of the table
* @param string the name of the ID column
* @return int
* @access public
* @author Thorsten Rinne <thorsten@phpmyfaq.de>
* @since 2005-06-27
*/
public function nextID($table, $id)
{
$result = $this->query('SELECT max('.$id.') AS current_id FROM '.$table);
$currentID = intval(sqlite_fetch_single($result));
return ($currentID + 1);
}
/**
* Returns the error string.
*
* This function returns the last error string.
*
* @access public
* @author Thorsten Rinne <thorsten@phpmyfaq.de>
* @since 2005-06-27
*/
public function error()
{
return sqlite_error_string(sqlite_last_error($this->conn));
}
/**
* Returns the libary version string.
*
* This function returns the version string.
*
* @access public
* @author Thorsten Rinne <thorsten@phpmyfaq.de>
* @since 2005-06-27
*/
public function client_version()
{
return 'SQLite '.sqlite_libversion();
}
/**
* Returns the libary version string.
*
* This function returns the version string.
*
* @access public
* @author Thorsten Rinne <thorsten@phpmyfaq.de>
* @since 2005-06-27
*/
public function server_version()
{
return $this->client_version();
}
/**
* Closes the connection to the database.
*
* This function closes the connection to the database.
*
* @access public
* @author Thorsten Rinne <thorsten@phpmyfaq.de>
* @since 2005-06-27
*/
public function dbclose()
{
return sqlite_close($this->conn);
}
}
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