net.php.pear/DB/ifx.php

<?php
//
// +----------------------------------------------------------------------+
// | PHP Version 4                                                        |
// +----------------------------------------------------------------------+
// | Copyright (c) 1997-2002 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>                              |
// +----------------------------------------------------------------------+
//
// $Id: ifx.php,v 1.18 2002/02/28 08:27:09 sebastian Exp $
//
// Database independent query interface definition for PHP's Informix
// extension.
//

// Legend:
// For more info on Informix errors see:
// http://www.informix.com/answers/english/ierrors.htm
//
// TODO:
//  - set needed env Informix vars on connect
//  - implement native prepare/execute

require_once 'DB/common.php';

class DB_ifx extends DB_common
{
    var $connection;
    var $affected = 0;
    var $dsn = array();
    var $fetchmode = DB_FETCHMODE_ORDERED; /* Default fetch mode */

    function DB_ifx()
    {
        $this->phptype = 'ifx';
        $this->dbsyntax = 'ifx';
        $this->features = array(
            'prepare' => false,
            'pconnect' => true,
            'transactions' => false,
            'limit' => 'emulate'
        );
        $this->errorcode_map = array(
            '-201'    => DB_ERROR_SYNTAX,
            '-206'    => DB_ERROR_NOSUCHTABLE,
            '-217'    => DB_ERROR_NOSUCHFIELD,
            '-329'    => DB_ERROR_NODBSELECTED,
            '-1204'   => DB_ERROR_INVALID_DATE,
            '-1205'   => DB_ERROR_INVALID_DATE,
            '-1206'   => DB_ERROR_INVALID_DATE,
            '-1209'   => DB_ERROR_INVALID_DATE,
            '-1210'   => DB_ERROR_INVALID_DATE,
            '-1212'   => DB_ERROR_INVALID_DATE
       );
    }

    /**
     * Connect to a database and log in as the specified user.
     *
     * @param $dsn the data source name (see DB::parseDSN for syntax)
     * @param $persistent (optional) whether the connection should
     *        be persistent
     *
     * @return int DB_OK on success, a DB error code on failure
     */
    function connect(&$dsninfo, $persistent = false)
    {
        if (!DB::assertExtension('informix'))
            return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND);

        $this->dsn = $dsninfo;
        $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, $pw);
        if (!is_resource($this->connection)) {
            return $this->ifxraiseError(DB_ERROR_CONNECT_FAILED);
        }
        return DB_OK;
    }

    /**
     * Log out and disconnect from the database.
     *
     * @return bool TRUE on success, FALSE if not connected.
     */
    function disconnect()
    {
        $ret = @ifx_close($this->connection);
        $this->connection = null;
        return $ret;
    }

    /**
     * Send a query to Informix and return the results as a
     * Informix resource identifier.
     *
     * @param $query the SQL query
     *
     * @return int returns a valid Informix result for successful SELECT
     * queries, DB_OK for other successful queries.  A DB error code
     * is returned on failure.
     */
    function simpleQuery($query)
    {
        $this->last_query = $query;
        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);
        } else {
            $result = @ifx_query($query, $this->connection);
        }
        if (!$result) {
            return $this->ifxraiseError();
        }
        $this->affected = ifx_affected_rows ($result);
        // Determine which queries that should return data, and which
        // should return an error code only.
        if (preg_match('/(SELECT)/i', $query)) {
            return $result;
        }
        return DB_OK;
    }

    // {{{ nextResult()

    /**
     * Move the internal ifx result pointer to the next available result
     *
     * @param a valid fbsql result resource
     *
     * @access public
     *
     * @return true if a result is available otherwise return false
     */
    function nextResult($result)
    {
        return false;
    }

    // }}}

    /**
     * Gets the number of rows affected by the last query.
     * if the last query was a select, returns an _estimate_ value.
     *
     * @return number of rows affected by the last query
     */
    function affectedRows()
    {
        return $this->affected;
    }

    /**
     * Fetch and return a row of data (it uses fetchInto for that)
     * @param   $result             Informix result identifier
     * @param   $fetchmode     format of fetched row array
     * @param   $rownum        the absolute row number to fetch
     *
     * @return  array   a row of data, or false on error
     */
    function fetchRow($result, $fetchmode = DB_FETCHMODE_DEFAULT, $rownum=null)
    {
        if ($fetchmode == DB_FETCHMODE_DEFAULT) {
            $fetchmode = $this->fetchmode;
        }
        $res = $this->fetchInto ($result, $arr, $fetchmode, $rownum);
        if ($res !== DB_OK) {
            return $res;
        }
        return $arr;
    }

    /**
     * Fetch a row and return as array.
     *
     * @param   $result     Informix result identifier
     * @param   $row         (reference) array where data from the row is stored
     * @param   $fetchmode      how the resulting array should be indexed
     * @param   $rownum     the row number to fetch
     *
     * @return int an array on success, a DB error code on failure, NULL
     *             if there is no more data
     */
    function fetchInto($result, &$row, $fetchmode, $rownum=null)
    {
        if (($rownum !== null) && ($rownum < 0)) {
            return null;
        }
        // if $rownum is null, fetch row will return the next row
        if (!$row = @ifx_fetch_row($result, $rownum)) {
            return null;
        }
        if ($fetchmode !== DB_FETCHMODE_ASSOC) {
            $i=0;
            $order = array();
            foreach ($row as $key => $val) {
                $order[$i++] = $val;
            }
            $row = $order;
        }
        return DB_OK;
    }

    function numRows($result)
    {
        return $this->raiseError(DB_ERROR_NOT_CAPABLE);
    }

    /**
     * Get the number of columns in a result set.
     *
     * @param $result Informix result identifier
     *
     * @return int the number of columns per row in $result
     */
    function numCols($result)
    {
        if (!$cols = @ifx_num_fields($result)) {
            return $this->ifxraiseError();
        }
        return $cols;
    }

    /**
     * Free the internal resources associated with $result.
     *
     * @param $result Informix result identifier
     *
     * @return bool TRUE on success, DB_error on error
     */
    function freeResult($result)
    {
        if (is_resource($result)) {
            if (!@ifx_free_result($result)) {
                return $this->ifxraiseError();
            }
            return true;
        }
        if (!isset($this->prepare_tokens[(int)$result])) {
            return false;
        }
        unset($this->prepare_tokens[(int)$result]);
        unset($this->prepare_types[(int)$result]);
        return true;
    }

    function ifxraiseError($errno = null)
    {
        if ($errno === null) {
            $errno = $this->errorCode(ifx_error());
        }

        return $this->raiseError($errno, null, null, null,
                            $this->errorNative());
    }

    /**
     * Map native error codes to DB's portable ones.  Requires that
     * the DB implementation's constructor fills in the $errorcode_map
     * property.
     *
     * @return int a portable DB error code, or DB_ERROR if this DB
     * implementation has no mapping for the given error code.
     */

    function errorCode($nativecode)
    {
        if (ereg('SQLCODE=(.*)]', $nativecode, $match)) {
            $code = $match[1];
            if (isset($this->errorcode_map[$code])) {
                return $this->errorcode_map[$code];
            }
        }
        return DB_ERROR;
    }

    /**
     * Get the native error message of the last error (if any) that
     * occured on the current connection.
     *
     * @return int native Informix error code
     */
    function errorNative()
    {
        return ifx_error() . ' ' . ifx_errormsg();
    }

    // {{{ getSpecialQuery()

    /**
    * Returns the query needed to get some backend info
    * @param string $type What kind of info you want to retrieve
    * @return string The SQL query string
    */
    function getSpecialQuery($type)
    {
        switch ($type) {
            case 'tables':
            default:
                return null;
        }
        return $sql;
    }

    // }}}
}

?>
1	cvsjoko	1.1	<?php
2			//
3			// +----------------------------------------------------------------------+
4			// \| PHP Version 4 \|
5			// +----------------------------------------------------------------------+
6			// \| Copyright (c) 1997-2002 The PHP Group \|
7			// +----------------------------------------------------------------------+
8			// \| This source file is subject to version 2.02 of the PHP license, \|
9			// \| that is bundled with this package in the file LICENSE, and is \|
10			// \| available at through the world-wide-web at \|
11			// \| http://www.php.net/license/2_02.txt. \|
12			// \| If you did not receive a copy of the PHP license and are unable to \|
13			// \| obtain it through the world-wide-web, please send a note to \|
14			// \| license@php.net so we can mail you a copy immediately. \|
15			// +----------------------------------------------------------------------+
16			// \| Author: Tomas V.V.Cox <cox@idecnet.com> \|
17			// +----------------------------------------------------------------------+
18			//
19			// $Id: ifx.php,v 1.18 2002/02/28 08:27:09 sebastian Exp $
20			//
21			// Database independent query interface definition for PHP's Informix
22			// extension.
23			//
24
25			// Legend:
26			// For more info on Informix errors see:
27			// http://www.informix.com/answers/english/ierrors.htm
28			//
29			// TODO:
30			// - set needed env Informix vars on connect
31			// - implement native prepare/execute
32
33			require_once 'DB/common.php';
34
35			class DB_ifx extends DB_common
36			{
37			var $connection;
38			var $affected = 0;
39			var $dsn = array();
40			var $fetchmode = DB_FETCHMODE_ORDERED; /* Default fetch mode */
41
42			function DB_ifx()
43			{
44			$this->phptype = 'ifx';
45			$this->dbsyntax = 'ifx';
46			$this->features = array(
47			'prepare' => false,
48			'pconnect' => true,
49			'transactions' => false,
50			'limit' => 'emulate'
51			);
52			$this->errorcode_map = array(
53			'-201' => DB_ERROR_SYNTAX,
54			'-206' => DB_ERROR_NOSUCHTABLE,
55			'-217' => DB_ERROR_NOSUCHFIELD,
56			'-329' => DB_ERROR_NODBSELECTED,
57			'-1204' => DB_ERROR_INVALID_DATE,
58			'-1205' => DB_ERROR_INVALID_DATE,
59			'-1206' => DB_ERROR_INVALID_DATE,
60			'-1209' => DB_ERROR_INVALID_DATE,
61			'-1210' => DB_ERROR_INVALID_DATE,
62			'-1212' => DB_ERROR_INVALID_DATE
63			);
64			}
65
66			/**
67			* Connect to a database and log in as the specified user.
68			*
69			* @param $dsn the data source name (see DB::parseDSN for syntax)
70			* @param $persistent (optional) whether the connection should
71			* be persistent
72			*
73			* @return int DB_OK on success, a DB error code on failure
74			*/
75			function connect(&$dsninfo, $persistent = false)
76			{
77			if (!DB::assertExtension('informix'))
78			return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND);
79
80			$this->dsn = $dsninfo;
81			$dbhost = $dsninfo['hostspec'] ? '@' . $dsninfo['hostspec'] : '';
82			$dbname = $dsninfo['database'] ? $dsninfo['database'] . $dbhost : '';
83			$user = $dsninfo['username'] ? $dsninfo['username'] : '';
84			$pw = $dsninfo['password'] ? $dsninfo['password'] : '';
85
86			$connect_function = $persistent ? 'ifx_pconnect' : 'ifx_connect';
87
88			$this->connection = @$connect_function($dbname, $user, $pw);
89			if (!is_resource($this->connection)) {
90			return $this->ifxraiseError(DB_ERROR_CONNECT_FAILED);
91			}
92			return DB_OK;
93			}
94
95			/**
96			* Log out and disconnect from the database.
97			*
98			* @return bool TRUE on success, FALSE if not connected.
99			*/
100			function disconnect()
101			{
102			$ret = @ifx_close($this->connection);
103			$this->connection = null;
104			return $ret;
105			}
106
107			/**
108			* Send a query to Informix and return the results as a
109			* Informix resource identifier.
110			*
111			* @param $query the SQL query
112			*
113			* @return int returns a valid Informix result for successful SELECT
114			* queries, DB_OK for other successful queries. A DB error code
115			* is returned on failure.
116			*/
117			function simpleQuery($query)
118			{
119			$this->last_query = $query;
120			if (preg_match('/(SELECT)/i', $query)) { //TESTME: Use !DB::isManip()?
121			// the scroll is needed for fetching absolute row numbers
122			// in a select query result
123			$result = @ifx_query($query, $this->connection, IFX_SCROLL);
124			} else {
125			$result = @ifx_query($query, $this->connection);
126			}
127			if (!$result) {
128			return $this->ifxraiseError();
129			}
130			$this->affected = ifx_affected_rows ($result);
131			// Determine which queries that should return data, and which
132			// should return an error code only.
133			if (preg_match('/(SELECT)/i', $query)) {
134			return $result;
135			}
136			return DB_OK;
137			}
138
139			// {{{ nextResult()
140
141			/**
142			* Move the internal ifx result pointer to the next available result
143			*
144			* @param a valid fbsql result resource
145			*
146			* @access public
147			*
148			* @return true if a result is available otherwise return false
149			*/
150			function nextResult($result)
151			{
152			return false;
153			}
154
155			// }}}
156
157			/**
158			* Gets the number of rows affected by the last query.
159			* if the last query was a select, returns an _estimate_ value.
160			*
161			* @return number of rows affected by the last query
162			*/
163			function affectedRows()
164			{
165			return $this->affected;
166			}
167
168			/**
169			* Fetch and return a row of data (it uses fetchInto for that)
170			* @param $result Informix result identifier
171			* @param $fetchmode format of fetched row array
172			* @param $rownum the absolute row number to fetch
173			*
174			* @return array a row of data, or false on error
175			*/
176			function fetchRow($result, $fetchmode = DB_FETCHMODE_DEFAULT, $rownum=null)
177			{
178			if ($fetchmode == DB_FETCHMODE_DEFAULT) {
179			$fetchmode = $this->fetchmode;
180			}
181			$res = $this->fetchInto ($result, $arr, $fetchmode, $rownum);
182			if ($res !== DB_OK) {
183			return $res;
184			}
185			return $arr;
186			}
187
188			/**
189			* Fetch a row and return as array.
190			*
191			* @param $result Informix result identifier
192			* @param $row (reference) array where data from the row is stored
193			* @param $fetchmode how the resulting array should be indexed
194			* @param $rownum the row number to fetch
195			*
196			* @return int an array on success, a DB error code on failure, NULL
197			* if there is no more data
198			*/
199			function fetchInto($result, &$row, $fetchmode, $rownum=null)
200			{
201			if (($rownum !== null) && ($rownum < 0)) {
202			return null;
203			}
204			// if $rownum is null, fetch row will return the next row
205			if (!$row = @ifx_fetch_row($result, $rownum)) {
206			return null;
207			}
208			if ($fetchmode !== DB_FETCHMODE_ASSOC) {
209			$i=0;
210			$order = array();
211			foreach ($row as $key => $val) {
212			$order[$i++] = $val;
213			}
214			$row = $order;
215			}
216			return DB_OK;
217			}
218
219			function numRows($result)
220			{
221			return $this->raiseError(DB_ERROR_NOT_CAPABLE);
222			}
223
224			/**
225			* Get the number of columns in a result set.
226			*
227			* @param $result Informix result identifier
228			*
229			* @return int the number of columns per row in $result
230			*/
231			function numCols($result)
232			{
233			if (!$cols = @ifx_num_fields($result)) {
234			return $this->ifxraiseError();
235			}
236			return $cols;
237			}
238
239			/**
240			* Free the internal resources associated with $result.
241			*
242			* @param $result Informix result identifier
243			*
244			* @return bool TRUE on success, DB_error on error
245			*/
246			function freeResult($result)
247			{
248			if (is_resource($result)) {
249			if (!@ifx_free_result($result)) {
250			return $this->ifxraiseError();
251			}
252			return true;
253			}
254			if (!isset($this->prepare_tokens[(int)$result])) {
255			return false;
256			}
257			unset($this->prepare_tokens[(int)$result]);
258			unset($this->prepare_types[(int)$result]);
259			return true;
260			}
261
262			function ifxraiseError($errno = null)
263			{
264			if ($errno === null) {
265			$errno = $this->errorCode(ifx_error());
266			}
267
268			return $this->raiseError($errno, null, null, null,
269			$this->errorNative());
270			}
271
272			/**
273			* Map native error codes to DB's portable ones. Requires that
274			* the DB implementation's constructor fills in the $errorcode_map
275			* property.
276			*
277			* @return int a portable DB error code, or DB_ERROR if this DB
278			* implementation has no mapping for the given error code.
279			*/
280
281			function errorCode($nativecode)
282			{
283			if (ereg('SQLCODE=(.*)]', $nativecode, $match)) {
284			$code = $match[1];
285			if (isset($this->errorcode_map[$code])) {
286			return $this->errorcode_map[$code];
287			}
288			}
289			return DB_ERROR;
290			}
291
292			/**
293			* Get the native error message of the last error (if any) that
294			* occured on the current connection.
295			*
296			* @return int native Informix error code
297			*/
298			function errorNative()
299			{
300			return ifx_error() . ' ' . ifx_errormsg();
301			}
302
303			// {{{ getSpecialQuery()
304
305			/**
306			* Returns the query needed to get some backend info
307			* @param string $type What kind of info you want to retrieve
308			* @return string The SQL query string
309			*/
310			function getSpecialQuery($type)
311			{
312			switch ($type) {
313			case 'tables':
314			default:
315			return null;
316			}
317			return $sql;
318			}
319
320			// }}}
321			}
322
323			?>
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