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<?php |
| 2 |
// |
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// +----------------------------------------------------------------------+ |
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// | PHP Version 4 | |
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// +----------------------------------------------------------------------+ |
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// | Copyright (c) 1997-2002 The PHP Group | |
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// +----------------------------------------------------------------------+ |
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// | This source file is subject to version 2.02 of the PHP license, | |
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// | that is bundled with this package in the file LICENSE, and is | |
| 10 |
// | available at through the world-wide-web at | |
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// | http://www.php.net/license/2_02.txt. | |
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// | If you did not receive a copy of the PHP license and are unable to | |
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// | obtain it through the world-wide-web, please send a note to | |
| 14 |
// | license@php.net so we can mail you a copy immediately. | |
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// +----------------------------------------------------------------------+ |
| 16 |
// | Author: Frank M. Kromann <frank@frontbase.com> | |
| 17 |
// +----------------------------------------------------------------------+ |
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// |
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// $Id: fbsql.php,v 1.14 2002/02/28 08:27:08 sebastian Exp $ |
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// |
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// Database independent query interface definition for PHP's FrontBase |
| 22 |
// extension. |
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// |
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|
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// |
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// XXX legend: |
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// |
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// XXX ERRORMSG: The error message from the fbsql function should |
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// be registered here. |
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// |
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|
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require_once "DB/common.php"; |
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|
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class DB_fbsql extends DB_common |
| 35 |
{ |
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// {{{ properties |
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|
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var $connection; |
| 39 |
var $phptype, $dbsyntax; |
| 40 |
var $prepare_tokens = array(); |
| 41 |
var $prepare_types = array(); |
| 42 |
var $num_rows = array(); |
| 43 |
var $fetchmode = DB_FETCHMODE_ORDERED; /* Default fetch mode */ |
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|
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// }}} |
| 46 |
// {{{ constructor |
| 47 |
|
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/** |
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* DB_fbsql constructor. |
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* |
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* @access public |
| 52 |
*/ |
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|
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function DB_fbsql() |
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{ |
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$this->DB_common(); |
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$this->phptype = 'fbsql'; |
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$this->dbsyntax = 'fbsql'; |
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$this->features = array( |
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'prepare' => false, |
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'pconnect' => true, |
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'transactions' => true, |
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'limit' => 'emulate' |
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); |
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$this->errorcode_map = array( |
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1004 => DB_ERROR_CANNOT_CREATE, |
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1005 => DB_ERROR_CANNOT_CREATE, |
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1006 => DB_ERROR_CANNOT_CREATE, |
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1007 => DB_ERROR_ALREADY_EXISTS, |
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1008 => DB_ERROR_CANNOT_DROP, |
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1046 => DB_ERROR_NODBSELECTED, |
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1050 => DB_ERROR_ALREADY_EXISTS, |
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1051 => DB_ERROR_NOSUCHTABLE, |
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1054 => DB_ERROR_NOSUCHFIELD, |
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1062 => DB_ERROR_ALREADY_EXISTS, |
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1064 => DB_ERROR_SYNTAX, |
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1100 => DB_ERROR_NOT_LOCKED, |
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1136 => DB_ERROR_VALUE_COUNT_ON_ROW, |
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1146 => DB_ERROR_NOSUCHTABLE, |
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); |
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} |
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|
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// }}} |
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|
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// {{{ connect() |
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|
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/** |
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* Connect to a database and log in as the specified user. |
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* |
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* @param $dsn the data source name (see DB::parseDSN for syntax) |
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* @param $persistent (optional) whether the connection should |
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* be persistent |
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* @access public |
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* @return int DB_OK on success, a DB error on failure |
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*/ |
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|
| 97 |
function connect($dsninfo, $persistent = false) |
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{ |
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if (!DB::assertExtension('fbsql')) |
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return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND); |
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|
| 102 |
$this->dsn = $dsninfo; |
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$dbhost = $dsninfo['hostspec'] ? $dsninfo['hostspec'] : 'localhost'; |
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$user = $dsninfo['username']; |
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$pw = $dsninfo['password']; |
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|
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$connect_function = $persistent ? 'fbsql_pconnect' : 'fbsql_connect'; |
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|
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ini_set('track_errors', true); |
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if ($dbhost && $user && $pw) { |
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$conn = @$connect_function($dbhost, $user, $pw); |
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} elseif ($dbhost && $user) { |
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$conn = @$connect_function($dbhost, $user); |
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} elseif ($dbhost) { |
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$conn = @$connect_function($dbhost); |
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} else { |
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$conn = false; |
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} |
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ini_restore("track_errors"); |
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if (empty($conn)) { |
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if (empty($php_errormsg)) { |
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return $this->raiseError(DB_ERROR_CONNECT_FAILED); |
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} else { |
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return $this->raiseError(DB_ERROR_CONNECT_FAILED, null, null, |
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null, $php_errormsg); |
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} |
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} |
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|
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if ($dsninfo['database']) { |
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if (!fbsql_select_db($dsninfo['database'], $conn)) { |
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return $this->fbsqlRaiseError(); |
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} |
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} |
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|
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$this->connection = $conn; |
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return DB_OK; |
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} |
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|
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// }}} |
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// {{{ disconnect() |
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|
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/** |
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* Log out and disconnect from the database. |
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* |
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* @access public |
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* |
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* @return bool TRUE on success, FALSE if not connected. |
| 148 |
*/ |
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function disconnect() |
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{ |
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$ret = fbsql_close($this->connection); |
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$this->connection = null; |
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return $ret; |
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} |
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|
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// }}} |
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// {{{ simpleQuery() |
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|
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/** |
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* Send a query to fbsql and return the results as a fbsql resource |
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* identifier. |
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* |
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* @param the SQL query |
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* |
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* @access public |
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* |
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* @return mixed returns a valid fbsql result for successful SELECT |
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* queries, DB_OK for other successful queries. A DB error is |
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* returned on failure. |
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*/ |
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function simpleQuery($query) |
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{ |
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$this->last_query = $query; |
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$query = $this->modifyQuery($query); |
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$result = @fbsql_query("$query;", $this->connection); |
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if (!$result) { |
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return $this->fbsqlRaiseError(); |
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} |
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// Determine which queries that should return data, and which |
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// should return an error code only. |
| 181 |
if (DB::isManip($query)) { |
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return DB_OK; |
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} |
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$numrows = $this->numrows($result); |
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if (is_object($numrows)) { |
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return $numrows; |
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} |
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$this->num_rows[$result] = $numrows; |
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return $result; |
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} |
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|
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// }}} |
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// {{{ nextResult() |
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|
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/** |
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* Move the internal fbsql result pointer to the next available result |
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* |
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* @param a valid fbsql result resource |
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* |
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* @access public |
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* |
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* @return true if a result is available otherwise return false |
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*/ |
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function nextResult($result) |
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{ |
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return @fbsql_next_result($result); |
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} |
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|
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// }}} |
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// {{{ fetchRow() |
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|
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/** |
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* Fetch and return a row of data (it uses fetchInto for that) |
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* @param $result fbsql result identifier |
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* @param $fetchmode format of fetched row array |
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* @param $rownum the absolute row number to fetch |
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* |
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* @return array a row of data, or false on error |
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*/ |
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function fetchRow($result, $fetchmode = DB_FETCHMODE_DEFAULT, $rownum=null) |
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{ |
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if ($fetchmode == DB_FETCHMODE_DEFAULT) { |
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$fetchmode = $this->fetchmode; |
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} |
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$res = $this->fetchInto ($result, $arr, $fetchmode, $rownum); |
| 226 |
if ($res !== DB_OK) { |
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return $res; |
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} |
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return $arr; |
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} |
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|
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// }}} |
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// {{{ fetchInto() |
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|
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/** |
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* Fetch a row and insert the data into an existing array. |
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* |
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* @param $result fbsql result identifier |
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* @param $arr (reference) array where data from the row is stored |
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* @param $fetchmode how the array data should be indexed |
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* @param $rownum the row number to fetch |
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* @access public |
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* |
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* @return int DB_OK on success, a DB error on failure |
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*/ |
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function fetchInto($result, &$arr, $fetchmode, $rownum=null) |
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{ |
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if ($rownum !== null) { |
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if (!@fbsql_data_seek($result, $rownum)) { |
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return null; |
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} |
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} |
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if ($fetchmode & DB_FETCHMODE_ASSOC) { |
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$arr = @fbsql_fetch_array($result, FBSQL_ASSOC); |
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} else { |
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$arr = @fbsql_fetch_row($result); |
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} |
| 258 |
if (!$arr) { |
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$errno = @fbsql_errno($this->connection); |
| 260 |
if (!$errno) { |
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return NULL; |
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} |
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return $this->fbsqlRaiseError($errno); |
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} |
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return DB_OK; |
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} |
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|
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// }}} |
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// {{{ freeResult() |
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|
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/** |
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* Free the internal resources associated with $result. |
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* |
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* @param $result fbsql result identifier or DB statement identifier |
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* |
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* @access public |
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* |
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* @return bool TRUE on success, FALSE if $result is invalid |
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*/ |
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function freeResult($result) |
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{ |
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if (is_resource($result)) { |
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return fbsql_free_result($result); |
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} |
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|
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if (!isset($this->prepare_tokens[(int)$result])) { |
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return false; |
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} |
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|
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unset($this->prepare_tokens[(int)$result]); |
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unset($this->prepare_types[(int)$result]); |
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|
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return true; |
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} |
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|
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// }}} |
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// {{{ autoCommit() |
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|
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function autoCommit($onoff=false) |
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{ |
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if ($onoff) { |
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$this->query("SET COMMIT TRUE"); |
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} else { |
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$this->query("SET COMMIT FALSE"); |
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} |
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} |
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|
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// }}} |
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// {{{ commit() |
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|
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function commit() |
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{ |
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fbsql_commit(); |
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} |
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|
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// }}} |
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// {{{ rollback() |
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|
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function rollback() |
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{ |
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fbsql_rollback(); |
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} |
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|
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// }}} |
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// {{{ numCols() |
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|
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/** |
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* Get the number of columns in a result set. |
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* |
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* @param $result fbsql result identifier |
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* |
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* @access public |
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* |
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* @return int the number of columns per row in $result |
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*/ |
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function numCols($result) |
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{ |
| 338 |
$cols = @fbsql_num_fields($result); |
| 339 |
|
| 340 |
if (!$cols) { |
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return $this->fbsqlRaiseError(); |
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} |
| 343 |
|
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return $cols; |
| 345 |
} |
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|
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// }}} |
| 348 |
// {{{ numRows() |
| 349 |
|
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/** |
| 351 |
* Get the number of rows in a result set. |
| 352 |
* |
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* @param $result fbsql result identifier |
| 354 |
* |
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* @access public |
| 356 |
* |
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* @return int the number of rows in $result |
| 358 |
*/ |
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function numRows($result) |
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{ |
| 361 |
$rows = @fbsql_num_rows($result); |
| 362 |
if ($rows === null) { |
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return $this->fbsqlRaiseError(); |
| 364 |
} |
| 365 |
return $rows; |
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} |
| 367 |
|
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// }}} |
| 369 |
// {{{ affectedRows() |
| 370 |
|
| 371 |
/** |
| 372 |
* Gets the number of rows affected by the data manipulation |
| 373 |
* query. For other queries, this function returns 0. |
| 374 |
* |
| 375 |
* @return number of rows affected by the last query |
| 376 |
*/ |
| 377 |
|
| 378 |
function affectedRows() |
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{ |
| 380 |
if (DB::isManip($this->last_query)) { |
| 381 |
$result = @fbsql_affected_rows($this->connection); |
| 382 |
} else { |
| 383 |
$result = 0; |
| 384 |
} |
| 385 |
return $result; |
| 386 |
} |
| 387 |
|
| 388 |
// }}} |
| 389 |
// {{{ errorNative() |
| 390 |
|
| 391 |
/** |
| 392 |
* Get the native error code of the last error (if any) that |
| 393 |
* occured on the current connection. |
| 394 |
* |
| 395 |
* @access public |
| 396 |
* |
| 397 |
* @return int native fbsql error code |
| 398 |
*/ |
| 399 |
|
| 400 |
function errorNative() |
| 401 |
{ |
| 402 |
return fbsql_errno($this->connection); |
| 403 |
} |
| 404 |
|
| 405 |
// }}} |
| 406 |
// {{{ nextId() |
| 407 |
|
| 408 |
/** |
| 409 |
* Get the next value in a sequence. We emulate sequences |
| 410 |
* for fbsql. Will create the sequence if it does not exist. |
| 411 |
* |
| 412 |
* @access public |
| 413 |
* |
| 414 |
* @param $seq_name the name of the sequence |
| 415 |
* |
| 416 |
* @param $ondemand whether to create the sequence table on demand |
| 417 |
* (default is true) |
| 418 |
* |
| 419 |
* @return a sequence integer, or a DB error |
| 420 |
*/ |
| 421 |
function nextId($seq_name, $ondemand = true) |
| 422 |
{ |
| 423 |
$sqn = preg_replace('/[^a-z0-9_]/i', '_', $seq_name); |
| 424 |
$repeat = 0; |
| 425 |
do { |
| 426 |
$seqname = sprintf($this->getOption("seqname_format"), $sqn); |
| 427 |
$result = $this->query("INSERT INTO ${seqname} VALUES(NULL)"); |
| 428 |
if ($ondemand && DB::isError($result) && |
| 429 |
$result->getCode() == DB_ERROR_NOSUCHTABLE) { |
| 430 |
$repeat = 1; |
| 431 |
$result = $this->createSequence($seq_name); |
| 432 |
if (DB::isError($result)) { |
| 433 |
return $result; |
| 434 |
} |
| 435 |
} else { |
| 436 |
$repeat = 0; |
| 437 |
} |
| 438 |
} while ($repeat); |
| 439 |
if (DB::isError($result)) { |
| 440 |
return $result; |
| 441 |
} |
| 442 |
return fbsql_insert_id($this->connection); |
| 443 |
} |
| 444 |
|
| 445 |
// }}} |
| 446 |
// {{{ createSequence() |
| 447 |
|
| 448 |
function createSequence($seq_name) |
| 449 |
{ |
| 450 |
$sqn = preg_replace('/[^a-z0-9_]/i', '_', $seq_name); |
| 451 |
$seqname = sprintf($this->getOption("seqname_format"), $sqn); |
| 452 |
return $this->query("CREATE TABLE ${seqname} ". |
| 453 |
'(id INTEGER UNSIGNED AUTO_INCREMENT NOT NULL,'. |
| 454 |
' PRIMARY KEY(id))'); |
| 455 |
} |
| 456 |
|
| 457 |
// }}} |
| 458 |
// {{{ dropSequence() |
| 459 |
|
| 460 |
function dropSequence($seq_name) |
| 461 |
{ |
| 462 |
$sqn = preg_replace('/[^a-z0-9_]/i', '_', $seq_name); |
| 463 |
$seqname = sprintf($this->getOption("seqname_format"), $sqn); |
| 464 |
return $this->query("DROP TABLE ${seqname} RESTRICT"); |
| 465 |
} |
| 466 |
|
| 467 |
// }}} |
| 468 |
// {{{ modifyQuery() |
| 469 |
|
| 470 |
function modifyQuery($query) |
| 471 |
{ |
| 472 |
if ($this->options['optimize'] == 'portability') { |
| 473 |
// "DELETE FROM table" gives 0 affected rows in fbsql. |
| 474 |
// This little hack lets you know how many rows were deleted. |
| 475 |
if (preg_match('/^\s*DELETE\s+FROM\s+(\S+)\s*$/i', $query)) { |
| 476 |
$query = preg_replace('/^\s*DELETE\s+FROM\s+(\S+)\s*$/', |
| 477 |
'DELETE FROM \1 WHERE 1=1', $query); |
| 478 |
} |
| 479 |
} |
| 480 |
return $query; |
| 481 |
} |
| 482 |
|
| 483 |
// }}} |
| 484 |
// {{{ fbsqlRaiseError() |
| 485 |
|
| 486 |
function fbsqlRaiseError($errno = null) |
| 487 |
{ |
| 488 |
if ($errno === null) { |
| 489 |
$errno = $this->errorCode(fbsql_errno($this->connection)); |
| 490 |
} |
| 491 |
return $this->raiseError($errno, null, null, null, |
| 492 |
fbsql_error($this->connection)); |
| 493 |
} |
| 494 |
|
| 495 |
// }}} |
| 496 |
// {{{ tableInfo() |
| 497 |
|
| 498 |
function tableInfo($result, $mode = null) { |
| 499 |
$count = 0; |
| 500 |
$id = 0; |
| 501 |
$res = array(); |
| 502 |
|
| 503 |
/* |
| 504 |
* depending on $mode, metadata returns the following values: |
| 505 |
* |
| 506 |
* - mode is false (default): |
| 507 |
* $result[]: |
| 508 |
* [0]["table"] table name |
| 509 |
* [0]["name"] field name |
| 510 |
* [0]["type"] field type |
| 511 |
* [0]["len"] field length |
| 512 |
* [0]["flags"] field flags |
| 513 |
* |
| 514 |
* - mode is DB_TABLEINFO_ORDER |
| 515 |
* $result[]: |
| 516 |
* ["num_fields"] number of metadata records |
| 517 |
* [0]["table"] table name |
| 518 |
* [0]["name"] field name |
| 519 |
* [0]["type"] field type |
| 520 |
* [0]["len"] field length |
| 521 |
* [0]["flags"] field flags |
| 522 |
* ["order"][field name] index of field named "field name" |
| 523 |
* The last one is used, if you have a field name, but no index. |
| 524 |
* Test: if (isset($result['meta']['myfield'])) { ... |
| 525 |
* |
| 526 |
* - mode is DB_TABLEINFO_ORDERTABLE |
| 527 |
* the same as above. but additionally |
| 528 |
* ["ordertable"][table name][field name] index of field |
| 529 |
* named "field name" |
| 530 |
* |
| 531 |
* this is, because if you have fields from different |
| 532 |
* tables with the same field name * they override each |
| 533 |
* other with DB_TABLEINFO_ORDER |
| 534 |
* |
| 535 |
* you can combine DB_TABLEINFO_ORDER and |
| 536 |
* DB_TABLEINFO_ORDERTABLE with DB_TABLEINFO_ORDER | |
| 537 |
* DB_TABLEINFO_ORDERTABLE * or with DB_TABLEINFO_FULL |
| 538 |
*/ |
| 539 |
|
| 540 |
// if $result is a string, then we want information about a |
| 541 |
// table without a resultset |
| 542 |
if (is_string($result)) { |
| 543 |
$id = @fbsql_list_fields($this->dsn['database'], |
| 544 |
$result, $this->connection); |
| 545 |
if (empty($id)) { |
| 546 |
return $this->fbsqlRaiseError(); |
| 547 |
} |
| 548 |
} else { // else we want information about a resultset |
| 549 |
$id = $result; |
| 550 |
if (empty($id)) { |
| 551 |
return $this->fbsqlRaiseError(); |
| 552 |
} |
| 553 |
} |
| 554 |
|
| 555 |
$count = @fbsql_num_fields($id); |
| 556 |
|
| 557 |
// made this IF due to performance (one if is faster than $count if's) |
| 558 |
if (empty($mode)) { |
| 559 |
for ($i=0; $i<$count; $i++) { |
| 560 |
$res[$i]['table'] = @fbsql_field_table ($id, $i); |
| 561 |
$res[$i]['name'] = @fbsql_field_name ($id, $i); |
| 562 |
$res[$i]['type'] = @fbsql_field_type ($id, $i); |
| 563 |
$res[$i]['len'] = @fbsql_field_len ($id, $i); |
| 564 |
$res[$i]['flags'] = @fbsql_field_flags ($id, $i); |
| 565 |
} |
| 566 |
} else { // full |
| 567 |
$res["num_fields"]= $count; |
| 568 |
|
| 569 |
for ($i=0; $i<$count; $i++) { |
| 570 |
$res[$i]['table'] = @fbsql_field_table ($id, $i); |
| 571 |
$res[$i]['name'] = @fbsql_field_name ($id, $i); |
| 572 |
$res[$i]['type'] = @fbsql_field_type ($id, $i); |
| 573 |
$res[$i]['len'] = @fbsql_field_len ($id, $i); |
| 574 |
$res[$i]['flags'] = @fbsql_field_flags ($id, $i); |
| 575 |
if ($mode & DB_TABLEINFO_ORDER) { |
| 576 |
$res['order'][$res[$i]['name']] = $i; |
| 577 |
} |
| 578 |
if ($mode & DB_TABLEINFO_ORDERTABLE) { |
| 579 |
$res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i; |
| 580 |
} |
| 581 |
} |
| 582 |
} |
| 583 |
|
| 584 |
// free the result only if we were called on a table |
| 585 |
if (is_string($result)) { |
| 586 |
@fbsql_free_result($id); |
| 587 |
} |
| 588 |
return $res; |
| 589 |
} |
| 590 |
|
| 591 |
// }}} |
| 592 |
// {{{ getSpecialQuery() |
| 593 |
|
| 594 |
/** |
| 595 |
* Returns the query needed to get some backend info |
| 596 |
* @param string $type What kind of info you want to retrieve |
| 597 |
* @return string The SQL query string |
| 598 |
*/ |
| 599 |
function getSpecialQuery($type) |
| 600 |
{ |
| 601 |
switch ($type) { |
| 602 |
case 'tables': |
| 603 |
$sql = 'select "table_name" from information_schema.tables'; |
| 604 |
break; |
| 605 |
default: |
| 606 |
return null; |
| 607 |
} |
| 608 |
return $sql; |
| 609 |
} |
| 610 |
|
| 611 |
// }}} |
| 612 |
} |
| 613 |
|
| 614 |
// TODO/wishlist: |
| 615 |
// longReadlen |
| 616 |
// binmode |
| 617 |
|
| 618 |
?> |
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