Source for file ifx.php
Documentation is available at ifx.php
/* vim: set expandtab tabstop=4 shiftwidth=4 foldmethod=marker: */
// +----------------------------------------------------------------------+
// +----------------------------------------------------------------------+
// | Copyright (c) 1997-2004 The PHP Group |
// +----------------------------------------------------------------------+
// | This source file is subject to version 2.02 of the PHP license, |
// | that is bundled with this package in the file LICENSE, and is |
// | available at through the world-wide-web at |
// | http://www.php.net/license/2_02.txt. |
// | If you did not receive a copy of the PHP license and are unable to |
// | obtain it through the world-wide-web, please send a note to |
// | license@php.net so we can mail you a copy immediately. |
// +----------------------------------------------------------------------+
// | Author: Tomas V.V.Cox <cox@idecnet.com> |
// | Maintainer: Daniel Convissor <danielc@php.net> |
// +----------------------------------------------------------------------+
// $Id: ifx.php,v 1.47 2004/03/05 01:46:53 danielc Exp $
// For more info on Informix errors see:
// http://www.informix.com/answers/english/ierrors.htm
// - set needed env Informix vars on connect
// - implement native prepare/execute
require_once 'DB/common.php';
* Database independent query interface definition for PHP's Informix
* @version $Id: ifx.php,v 1.47 2004/03/05 01:46:53 danielc Exp $
* @author Tomas V.V.Cox <cox@idecnet.com>
var $fetchmode = DB_FETCHMODE_ORDERED; /* Default fetch mode */
* Connect to a database and log in as the specified user.
* @param $dsn the data source name (see DB::parseDSN for syntax)
* @param $persistent (optional) whether the connection should
* @return int DB_OK on success, a DB error code on failure
function connect($dsninfo, $persistent = false )
$dbhost = $dsninfo['hostspec'] ? '@' . $dsninfo['hostspec'] : '';
$dbname = $dsninfo['database'] ? $dsninfo['database'] . $dbhost : '';
$user = $dsninfo['username'] ? $dsninfo['username'] : '';
$pw = $dsninfo['password'] ? $dsninfo['password'] : '';
$connect_function = $persistent ? 'ifx_pconnect' : 'ifx_connect';
$this->connection = @$connect_function($dbname, $user, $pw);
* Log out and disconnect from the database.
* @return bool true on success, false if not connected.
* Send a query to Informix and return the results as a
* Informix resource identifier.
* @param $query the SQL query
* @return int returns a valid Informix result for successful SELECT
* queries, DB_OK for other successful queries. A DB error code
* is returned on failure.
if (preg_match('/(SELECT)/i', $query)) { //TESTME: Use !DB::isManip()?
// the scroll is needed for fetching absolute row numbers
// in a select query result
$result = @ifx_query ($query, $this->connection, IFX_SCROLL );
$result = @ifx_query ('BEGIN WORK', $this->connection);
$this->affected = @ifx_affected_rows ($result);
// Determine which queries should return data, and which
// should return an error code only.
// XXX Testme: free results inside a transaction
// may cause to stop it and commit the work?
// Result has to be freed even with a insert or update
@ifx_free_result ($result);
* Move the internal ifx result pointer to the next available result
* @param a valid fbsql result resource
* @return true if a result is available otherwise return false
* Gets the number of rows affected by the last query.
* if the last query was a select, returns 0.
* @return number of rows affected by the last query
* Fetch a row and insert the data into an existing array.
* Formating of the array and the data therein are configurable.
* See DB_result::fetchInto() for more information.
* @param resource $result query result identifier
* @param array $arr (reference) array where data from the row
* @param int $fetchmode how the resulting array should be indexed
* @param int $rownum the row number to fetch
* @return mixed DB_OK on success, null when end of result set is
* @see DB_result::fetchInto()
function fetchInto ($result, &$arr, $fetchmode, $rownum=null )
if (($rownum !== null ) && ($rownum < 0 )) {
* Even though fetch_row() should return the next row if
* $rownum is null, it doesn't in all cases. Bug 598.
// Index starts at row 1, unlike most DBMS's starting at 0.
if (!$arr = @ifx_fetch_row ($result, $rownum)) {
$this->_rtrimArrayValues ($arr);
$this->_convertNullArrayValuesToEmpty ($arr);
* Get the number of columns in a result set.
* @param $result Informix result identifier
* @return int the number of columns per row in $result
if (!$cols = @ifx_num_fields ($result)) {
* Free the internal resources associated with $result.
* @param $result Informix result identifier
* @return bool true on success, false if $result is invalid
return @ifx_free_result ($result);
* Enable/disable automatic commits
// XXX if $this->transaction_opcount > 0, we should probably
* Commit the current transaction.
$result = @ifx_query ('COMMIT WORK', $this->connection);
return $this->ifxRaiseError ();
* Roll back (undo) the current transaction.
$result = @ifx_query ('ROLLBACK WORK', $this->connection);
return $this->ifxRaiseError ();
* Gather information about an error, then use that info to create a
* DB error object and finally return that object.
* @param integer $errno PEAR error number (usually a DB constant) if
* manually raising an error
* @return object DB error object
* @see DB_common::raiseError()
return $this->raiseError($errno, null , null , null ,
* Map native error codes to DB's portable ones.
* Requires that the DB implementation's constructor fills
* in the <var>$errorcode_map</var> property.
* @param string $nativecode error code returned by the database
* @return int a portable DB error code, or DB_ERROR if this DB
* implementation has no mapping for the given error code.
if (ereg('SQLCODE=(.*)]', $nativecode, $match)) {
* Get the native error message of the last error (if any) that
* occured on the current connection.
* @return int native Informix error code
return @ifx_error () . ' ' . @ifx_errormsg ();
* Returns the query needed to get some backend info
* @param string $type What kind of info you want to retrieve
* @return string The SQL query string
return 'select tabname from systables where tabid >= 100';
* Returns information about a table or a result set.
* NOTE: only supports 'table' if <var>$result</var> is a table name.
* If analyzing a query result and the result has duplicate field names,
* an error will be raised saying
* <samp>can't distinguish duplicate field names</samp>.
* @param object|string $result DB_result object from a query or a
* string containing the name of a table
* @param int $mode a valid tableInfo mode
* @return array an associative array with the information requested
* or an error object if something is wrong
* @see DB_common::tableInfo()
if (isset ($result->result )) {
* Probably received a result object.
* Extract the result resource identifier.
* Probably received a table name.
* Create a result resource identifier.
$id = @ifx_query (" SELECT * FROM $result WHERE 1=0" ,
* Probably received a result resource identifier.
$flds = @ifx_fieldproperties ($id);
$count = @ifx_num_fields ($id);
if (count($flds) != $count) {
return $this->raiseError("can't distinguish duplicate field names");
$case_func = 'strtolower';
// made this IF due to performance (one if is faster than $count if's)
foreach ($flds as $key => $value) {
$res[$i]['table'] = $got_string ? $case_func($result) : '';
$res[$i]['name'] = $case_func($key);
$res[$i]['type'] = $props[0 ];
$res[$i]['len'] = $props[1 ];
$res[$i]['flags'] = $props[4 ] == 'N' ? 'not_null' : '';
$res['num_fields'] = $count;
foreach ($flds as $key => $value) {
$res[$i]['table'] = $got_string ? $case_func($result) : '';
$res[$i]['name'] = $case_func($key);
$res[$i]['type'] = $props[0 ];
$res[$i]['len'] = $props[1 ];
$res[$i]['flags'] = $props[4 ] == 'N' ? 'not_null' : '';
$res['order'][$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 10:14:52 -0400 by phpDocumentor 1.4.4. PEAR Logo Copyright © PHP Group 2004.
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