2 /* vim: set expandtab tabstop=4 shiftwidth=4 foldmethod=marker: */
3 // +----------------------------------------------------------------------+
5 // +----------------------------------------------------------------------+
6 // | Copyright (c) 1997-2004 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 // | Authors: Stig Bakken <ssb@php.net> |
17 // | Tomas V.V.Cox <cox@idecnet.com> |
18 // | Maintainer: Daniel Convissor <danielc@php.net> |
19 // +----------------------------------------------------------------------+
21 // $Id: DB.php,v 1.6 2004-06-21 08:39:37 rurban Exp $
23 // Database independent query interface.
26 require_once 'PEAR.php';
32 * The method mapErrorCode in each DB_dbtype implementation maps
33 * native error codes to one of these.
35 * If you add an error code here, make sure you also add a textual
36 * version of it in DB::errorMessage().
39 define('DB_ERROR', -1);
40 define('DB_ERROR_SYNTAX', -2);
41 define('DB_ERROR_CONSTRAINT', -3);
42 define('DB_ERROR_NOT_FOUND', -4);
43 define('DB_ERROR_ALREADY_EXISTS', -5);
44 define('DB_ERROR_UNSUPPORTED', -6);
45 define('DB_ERROR_MISMATCH', -7);
46 define('DB_ERROR_INVALID', -8);
47 define('DB_ERROR_NOT_CAPABLE', -9);
48 define('DB_ERROR_TRUNCATED', -10);
49 define('DB_ERROR_INVALID_NUMBER', -11);
50 define('DB_ERROR_INVALID_DATE', -12);
51 define('DB_ERROR_DIVZERO', -13);
52 define('DB_ERROR_NODBSELECTED', -14);
53 define('DB_ERROR_CANNOT_CREATE', -15);
54 define('DB_ERROR_CANNOT_DELETE', -16);
55 define('DB_ERROR_CANNOT_DROP', -17);
56 define('DB_ERROR_NOSUCHTABLE', -18);
57 define('DB_ERROR_NOSUCHFIELD', -19);
58 define('DB_ERROR_NEED_MORE_DATA', -20);
59 define('DB_ERROR_NOT_LOCKED', -21);
60 define('DB_ERROR_VALUE_COUNT_ON_ROW', -22);
61 define('DB_ERROR_INVALID_DSN', -23);
62 define('DB_ERROR_CONNECT_FAILED', -24);
63 define('DB_ERROR_EXTENSION_NOT_FOUND',-25);
64 define('DB_ERROR_ACCESS_VIOLATION', -26);
65 define('DB_ERROR_NOSUCHDB', -27);
66 define('DB_ERROR_CONSTRAINT_NOT_NULL',-29);
70 // {{{ prepared statement-related
74 * These constants are used when storing information about prepared
75 * statements (using the "prepare" method in DB_dbtype).
77 * The prepare/execute model in DB is mostly borrowed from the ODBC
78 * extension, in a query the "?" character means a scalar parameter.
79 * There are two extensions though, a "&" character means an opaque
80 * parameter. An opaque parameter is simply a file name, the real
81 * data are in that file (useful for putting uploaded files into your
82 * database and such). The "!" char means a parameter that must be
84 * They modify the quote behavoir:
85 * DB_PARAM_SCALAR (?) => 'original string quoted'
86 * DB_PARAM_OPAQUE (&) => 'string from file quoted'
87 * DB_PARAM_MISC (!) => original string
89 define('DB_PARAM_SCALAR', 1);
90 define('DB_PARAM_OPAQUE', 2);
91 define('DB_PARAM_MISC', 3);
95 // {{{ binary data-related
99 * These constants define different ways of returning binary data
100 * from queries. Again, this model has been borrowed from the ODBC
103 * DB_BINMODE_PASSTHRU sends the data directly through to the browser
104 * when data is fetched from the database.
105 * DB_BINMODE_RETURN lets you return data as usual.
106 * DB_BINMODE_CONVERT returns data as well, only it is converted to
107 * hex format, for example the string "123" would become "313233".
109 define('DB_BINMODE_PASSTHRU', 1);
110 define('DB_BINMODE_RETURN', 2);
111 define('DB_BINMODE_CONVERT', 3);
119 * This is a special constant that tells DB the user hasn't specified
120 * any particular get mode, so the default should be used.
122 define('DB_FETCHMODE_DEFAULT', 0);
125 * Column data indexed by numbers, ordered from 0 and up
127 define('DB_FETCHMODE_ORDERED', 1);
130 * Column data indexed by column names
132 define('DB_FETCHMODE_ASSOC', 2);
135 * Column data as object properties
137 define('DB_FETCHMODE_OBJECT', 3);
140 * For multi-dimensional results: normally the first level of arrays
141 * is the row number, and the second level indexed by column number or name.
142 * DB_FETCHMODE_FLIPPED switches this order, so the first level of arrays
143 * is the column name, and the second level the row number.
145 define('DB_FETCHMODE_FLIPPED', 4);
147 /* for compatibility */
148 define('DB_GETMODE_ORDERED', DB_FETCHMODE_ORDERED);
149 define('DB_GETMODE_ASSOC', DB_FETCHMODE_ASSOC);
150 define('DB_GETMODE_FLIPPED', DB_FETCHMODE_FLIPPED);
154 // {{{ tableInfo() && autoPrepare()-related
158 * these are constants for the tableInfo-function
159 * they are bitwised or'ed. so if there are more constants to be defined
160 * in the future, adjust DB_TABLEINFO_FULL accordingly
162 define('DB_TABLEINFO_ORDER', 1);
163 define('DB_TABLEINFO_ORDERTABLE', 2);
164 define('DB_TABLEINFO_FULL', 3);
167 * Used by autoPrepare()
169 define('DB_AUTOQUERY_INSERT', 1);
170 define('DB_AUTOQUERY_UPDATE', 2);
174 // {{{ portability modes
178 * Portability: turn off all portability features.
179 * @see DB_common::setOption()
181 define('DB_PORTABILITY_NONE', 0);
184 * Portability: convert names of tables and fields to lower case
185 * when using the get*(), fetch*() and tableInfo() methods.
186 * @see DB_common::setOption()
188 define('DB_PORTABILITY_LOWERCASE', 1);
191 * Portability: right trim the data output by get*() and fetch*().
192 * @see DB_common::setOption()
194 define('DB_PORTABILITY_RTRIM', 2);
197 * Portability: force reporting the number of rows deleted.
198 * @see DB_common::setOption()
200 define('DB_PORTABILITY_DELETE_COUNT', 4);
203 * Portability: enable hack that makes numRows() work in Oracle.
204 * @see DB_common::setOption()
206 define('DB_PORTABILITY_NUMROWS', 8);
209 * Portability: makes certain error messages in certain drivers compatible
210 * with those from other DBMS's.
212 * + mysql, mysqli: change unique/primary key constraints
213 * DB_ERROR_ALREADY_EXISTS -> DB_ERROR_CONSTRAINT
215 * + odbc(access): MS's ODBC driver reports 'no such field' as code
216 * 07001, which means 'too few parameters.' When this option is on
217 * that code gets mapped to DB_ERROR_NOSUCHFIELD.
219 * @see DB_common::setOption()
221 define('DB_PORTABILITY_ERRORS', 16);
224 * Portability: convert null values to empty strings in data output by
225 * get*() and fetch*().
226 * @see DB_common::setOption()
228 define('DB_PORTABILITY_NULL_TO_EMPTY', 32);
231 * Portability: turn on all portability features.
232 * @see DB_common::setOption()
234 define('DB_PORTABILITY_ALL', 63);
243 * The main "DB" class is simply a container class with some static
244 * methods for creating DB objects as well as some utility functions
245 * common to all parts of DB.
247 * The object model of DB is as follows (indentation means inheritance):
249 * DB The main DB class. This is simply a utility class
250 * with some "static" methods for creating DB objects as
251 * well as common utility functions for other DB classes.
253 * DB_common The base for each DB implementation. Provides default
254 * | implementations (in OO lingo virtual methods) for
255 * | the actual DB implementations as well as a bunch of
256 * | query utility functions.
258 * +-DB_mysql The DB implementation for MySQL. Inherits DB_common.
259 * When calling DB::factory or DB::connect for MySQL
260 * connections, the object returned is an instance of this
264 * @author Stig Bakken <ssb@php.net>
265 * @author Tomas V.V.Cox <cox@idecnet.com>
267 * @version $Id: DB.php,v 1.6 2004-06-21 08:39:37 rurban Exp $
275 * Create a new DB object for the specified database type.
277 * Allows creation of a DB_<driver> object from which the object's
278 * methods can be utilized without actually connecting to a database.
280 * @param string $type database type, for example "mysql"
281 * @param array $options associative array of option names and values
283 * @return object a new DB object. On error, an error object.
285 * @see DB_common::setOption()
288 function &factory($type, $options = false)
290 if (!is_array($options)) {
291 $options = array('persistent' => $options);
294 if (isset($options['debug']) && $options['debug'] >= 2) {
295 // expose php errors with sufficient debug level
296 include_once "DB/{$type}.php";
298 @include_once "DB/{$type}.php";
301 $classname = "DB_${type}";
303 if (!class_exists($classname)) {
304 $tmp = PEAR::raiseError(null, DB_ERROR_NOT_FOUND, null, null,
305 "Unable to include the DB/{$type}.php file",
310 @$obj =& new $classname;
312 foreach ($options as $option => $value) {
313 $test = $obj->setOption($option, $value);
314 if (DB::isError($test)) {
326 * Create a new DB object and connect to the specified database.
330 * require_once 'DB.php';
332 * $dsn = 'mysql://user:password@host/database'
335 * 'portability' => DB_PORTABILITY_ALL,
338 * $dbh =& DB::connect($dsn, $options);
339 * if (DB::isError($dbh)) {
340 * die($dbh->getMessage());
344 * @param mixed $dsn string "data source name" or an array in the
345 * format returned by DB::parseDSN()
347 * @param array $options an associative array of option names and
350 * @return object a newly created DB connection object, or a DB
351 * error object on error
353 * @see DB::parseDSN(), DB_common::setOption(), DB::isError()
356 function &connect($dsn, $options = array())
358 $dsninfo = DB::parseDSN($dsn);
359 $type = $dsninfo['phptype'];
361 if (!is_array($options)) {
363 * For backwards compatibility. $options used to be boolean,
364 * indicating whether the connection should be persistent.
366 $options = array('persistent' => $options);
369 if (isset($options['debug']) && $options['debug'] >= 2) {
370 // expose php errors with sufficient debug level
371 include_once "DB/${type}.php";
373 @include_once "DB/${type}.php";
376 $classname = "DB_${type}";
377 if (!class_exists($classname)) {
378 $tmp = PEAR::raiseError(null, DB_ERROR_NOT_FOUND, null, null,
379 "Unable to include the DB/{$type}.php file for `$dsn'",
384 @$obj =& new $classname;
386 foreach ($options as $option => $value) {
387 $test = $obj->setOption($option, $value);
388 if (DB::isError($test)) {
393 $err = $obj->connect($dsninfo, $obj->getOption('persistent'));
394 if (DB::isError($err)) {
395 $err->addUserInfo($dsn);
406 * Return the DB API version
408 * @return int the DB API version number
412 function apiVersion()
421 * Tell whether a result code from a DB method is an error
423 * @param int $value result code
425 * @return bool whether $value is an error
429 function isError($value)
431 return is_a($value, 'DB_Error');
435 // {{{ isConnection()
438 * Tell whether a value is a DB connection
440 * @param mixed $value value to test
442 * @return bool whether $value is a DB connection
446 function isConnection($value)
448 return (is_object($value) &&
449 is_subclass_of($value, 'db_common') &&
450 method_exists($value, 'simpleQuery'));
457 * Tell whether a query is a data manipulation query (insert,
458 * update or delete) or a data definition query (create, drop,
459 * alter, grant, revoke).
463 * @param string $query the query
465 * @return boolean whether $query is a data manipulation query
467 function isManip($query)
469 $manips = 'INSERT|UPDATE|DELETE|LOAD DATA|'.'REPLACE|CREATE|DROP|'.
470 'ALTER|GRANT|REVOKE|'.'LOCK|UNLOCK';
471 if (preg_match('/^\s*"?('.$manips.')\s+/i', $query)) {
478 // {{{ errorMessage()
481 * Return a textual error message for a DB error code
483 * @param integer $value error code
485 * @return string error message, or false if the error code was
488 function errorMessage($value)
490 static $errorMessages;
491 if (!isset($errorMessages)) {
492 $errorMessages = array(
493 DB_ERROR => 'unknown error',
494 DB_ERROR_ALREADY_EXISTS => 'already exists',
495 DB_ERROR_CANNOT_CREATE => 'can not create',
496 DB_ERROR_CANNOT_DELETE => 'can not delete',
497 DB_ERROR_CANNOT_DROP => 'can not drop',
498 DB_ERROR_CONSTRAINT => 'constraint violation',
499 DB_ERROR_CONSTRAINT_NOT_NULL=> 'null value violates not-null constraint',
500 DB_ERROR_DIVZERO => 'division by zero',
501 DB_ERROR_INVALID => 'invalid',
502 DB_ERROR_INVALID_DATE => 'invalid date or time',
503 DB_ERROR_INVALID_NUMBER => 'invalid number',
504 DB_ERROR_MISMATCH => 'mismatch',
505 DB_ERROR_NODBSELECTED => 'no database selected',
506 DB_ERROR_NOSUCHFIELD => 'no such field',
507 DB_ERROR_NOSUCHTABLE => 'no such table',
508 DB_ERROR_NOT_CAPABLE => 'DB backend not capable',
509 DB_ERROR_NOT_FOUND => 'not found',
510 DB_ERROR_NOT_LOCKED => 'not locked',
511 DB_ERROR_SYNTAX => 'syntax error',
512 DB_ERROR_UNSUPPORTED => 'not supported',
513 DB_ERROR_VALUE_COUNT_ON_ROW => 'value count on row',
514 DB_ERROR_INVALID_DSN => 'invalid DSN',
515 DB_ERROR_CONNECT_FAILED => 'connect failed',
517 DB_ERROR_NEED_MORE_DATA => 'insufficient data supplied',
518 DB_ERROR_EXTENSION_NOT_FOUND=> 'extension not found',
519 DB_ERROR_NOSUCHDB => 'no such database',
520 DB_ERROR_ACCESS_VIOLATION => 'insufficient permissions',
521 DB_ERROR_TRUNCATED => 'truncated'
525 if (DB::isError($value)) {
526 $value = $value->getCode();
529 return isset($errorMessages[$value]) ? $errorMessages[$value] : $errorMessages[DB_ERROR];
536 * Parse a data source name.
538 * Additional keys can be added by appending a URI query string to the
541 * The format of the supplied DSN is in its fullest form:
543 * phptype(dbsyntax)://username:password@protocol+hostspec/database?option=8&another=true
546 * Most variations are allowed:
548 * phptype://username:password@protocol+hostspec:110//usr/db_file.db?mode=0644
549 * phptype://username:password@hostspec/database_name
550 * phptype://username:password@hostspec
551 * phptype://username@hostspec
552 * phptype://hostspec/database
558 * @param string $dsn Data Source Name to be parsed
560 * @return array an associative array with the following keys:
561 * + phptype: Database backend used in PHP (mysql, odbc etc.)
562 * + dbsyntax: Database used with regards to SQL syntax etc.
563 * + protocol: Communication protocol to use (tcp, unix etc.)
564 * + hostspec: Host specification (hostname[:port])
565 * + database: Database to use on the DBMS server
566 * + username: User name for login
567 * + password: Password for login
569 * @author Tomas V.V.Cox <cox@idecnet.com>
571 function parseDSN($dsn)
585 if (is_array($dsn)) {
586 $dsn = array_merge($parsed, $dsn);
587 if (!$dsn['dbsyntax']) {
588 $dsn['dbsyntax'] = $dsn['phptype'];
593 // Find phptype and dbsyntax
594 if (($pos = strpos($dsn, '://')) !== false) {
595 $str = substr($dsn, 0, $pos);
596 $dsn = substr($dsn, $pos + 3);
602 // Get phptype and dbsyntax
603 // $str => phptype(dbsyntax)
604 if (preg_match('|^(.+?)\((.*?)\)$|', $str, $arr)) {
605 $parsed['phptype'] = $arr[1];
606 $parsed['dbsyntax'] = !$arr[2] ? $arr[1] : $arr[2];
608 $parsed['phptype'] = $str;
609 $parsed['dbsyntax'] = $str;
616 // Get (if found): username and password
617 // $dsn => username:password@protocol+hostspec/database
618 if (($at = strrpos($dsn,'@')) !== false) {
619 $str = substr($dsn, 0, $at);
620 $dsn = substr($dsn, $at + 1);
621 if (($pos = strpos($str, ':')) !== false) {
622 $parsed['username'] = rawurldecode(substr($str, 0, $pos));
623 $parsed['password'] = rawurldecode(substr($str, $pos + 1));
625 $parsed['username'] = rawurldecode($str);
629 // Find protocol and hostspec
631 // $dsn => proto(proto_opts)/database
632 if (preg_match('|^([^(]+)\((.*?)\)/?(.*?)$|', $dsn, $match)) {
634 $proto_opts = $match[2] ? $match[2] : false;
637 // $dsn => protocol+hostspec/database (old format)
639 if (strpos($dsn, '+') !== false) {
640 list($proto, $dsn) = explode('+', $dsn, 2);
642 if (strpos($dsn, '/') !== false) {
643 list($proto_opts, $dsn) = explode('/', $dsn, 2);
650 // process the different protocol options
651 $parsed['protocol'] = (!empty($proto)) ? $proto : 'tcp';
652 $proto_opts = rawurldecode($proto_opts);
653 if ($parsed['protocol'] == 'tcp') {
654 if (strpos($proto_opts, ':') !== false) {
655 list($parsed['hostspec'], $parsed['port']) = explode(':', $proto_opts);
657 $parsed['hostspec'] = $proto_opts;
659 } elseif ($parsed['protocol'] == 'unix') {
660 $parsed['socket'] = $proto_opts;
667 if (($pos = strpos($dsn, '?')) === false) {
668 $parsed['database'] = $dsn;
669 // /database?param1=value1¶m2=value2
671 $parsed['database'] = substr($dsn, 0, $pos);
672 $dsn = substr($dsn, $pos + 1);
673 if (strpos($dsn, '&') !== false) {
674 $opts = explode('&', $dsn);
675 } else { // database?param1=value1
678 foreach ($opts as $opt) {
679 list($key, $value) = explode('=', $opt);
680 if (!isset($parsed[$key])) {
681 // don't allow params overwrite
682 $parsed[$key] = rawurldecode($value);
692 // {{{ assertExtension()
695 * Load a PHP database extension if it is not loaded already.
699 * @param string $name the base name of the extension (without the .so or
702 * @return boolean true if the extension was already or successfully
703 * loaded, false if it could not be loaded
705 function assertExtension($name)
707 if (!extension_loaded($name)) {
708 $dlext = OS_WINDOWS ? '.dll' : '.so';
709 $dlprefix = OS_WINDOWS ? 'php_' : '';
710 @dl($dlprefix . $name . $dlext);
711 return extension_loaded($name);
719 // {{{ class DB_Error
722 * DB_Error implements a class for reporting portable database error
726 * @author Stig Bakken <ssb@php.net>
728 class DB_Error extends PEAR_Error
733 * DB_Error constructor.
735 * @param mixed $code DB error code, or string with error message.
736 * @param integer $mode what "error mode" to operate in
737 * @param integer $level what error level to use for $mode & PEAR_ERROR_TRIGGER
738 * @param mixed $debuginfo additional debug info, such as the last query
744 function DB_Error($code = DB_ERROR, $mode = PEAR_ERROR_RETURN,
745 $level = E_USER_NOTICE, $debuginfo = null)
748 $this->PEAR_Error('DB Error: ' . DB::errorMessage($code), $code, $mode, $level, $debuginfo);
750 $this->PEAR_Error("DB Error: $code", DB_ERROR, $mode, $level, $debuginfo);
757 // {{{ class DB_result
760 * This class implements a wrapper for a DB result set.
761 * A new instance of this class will be returned by the DB implementation
762 * after processing a query that returns data.
765 * @author Stig Bakken <ssb@php.net>
773 var $row_counter = null;
776 * for limit queries, the row to start fetching
779 var $limit_from = null;
782 * for limit queries, the number of rows to fetch
785 var $limit_count = null;
791 * DB_result constructor.
792 * @param resource &$dbh DB object reference
793 * @param resource $result result resource id
794 * @param array $options assoc array with optional result options
796 function DB_result(&$dbh, $result, $options = array())
799 $this->result = $result;
800 foreach ($options as $key => $value) {
801 $this->setOption($key, $value);
803 $this->limit_type = $dbh->features['limit'];
804 $this->autofree = $dbh->options['autofree'];
805 $this->fetchmode = $dbh->fetchmode;
806 $this->fetchmode_object_class = $dbh->fetchmode_object_class;
809 function setOption($key, $value = null)
813 $this->limit_from = $value; break;
815 $this->limit_count = $value; break;
823 * Fetch a row of data and return it by reference into an array.
825 * The type of array returned can be controlled either by setting this
826 * method's <var>$fetchmode</var> parameter or by changing the default
827 * fetch mode setFetchMode() before calling this method.
829 * There are two options for standardizing the information returned
830 * from databases, ensuring their values are consistent when changing
831 * DBMS's. These portability options can be turned on when creating a
832 * new DB object or by using setOption().
834 * + <samp>DB_PORTABILITY_LOWERCASE</samp>
835 * convert names of fields to lower case
837 * + <samp>DB_PORTABILITY_RTRIM</samp>
838 * right trim the data
840 * @param int $fetchmode how the resulting array should be indexed
841 * @param int $rownum the row number to fetch
843 * @return array a row of data, null on no more rows or PEAR_Error
846 * @see DB_common::setOption(), DB_common::setFetchMode()
849 function &fetchRow($fetchmode = DB_FETCHMODE_DEFAULT, $rownum=null)
851 if ($fetchmode === DB_FETCHMODE_DEFAULT) {
852 $fetchmode = $this->fetchmode;
854 if ($fetchmode === DB_FETCHMODE_OBJECT) {
855 $fetchmode = DB_FETCHMODE_ASSOC;
856 $object_class = $this->fetchmode_object_class;
858 if ($this->limit_from !== null) {
859 if ($this->row_counter === null) {
860 $this->row_counter = $this->limit_from;
862 if ($this->limit_type == false) {
864 while ($i++ < $this->limit_from) {
865 $this->dbh->fetchInto($this->result, $arr, $fetchmode);
869 if ($this->row_counter >= (
870 $this->limit_from + $this->limit_count))
872 if ($this->autofree) {
878 if ($this->limit_type == 'emulate') {
879 $rownum = $this->row_counter;
881 $this->row_counter++;
883 $res = $this->dbh->fetchInto($this->result, $arr, $fetchmode, $rownum);
884 if ($res === DB_OK) {
885 if (isset($object_class)) {
886 // default mode specified in DB_common::fetchmode_object_class property
887 if ($object_class == 'stdClass') {
888 $arr = (object) $arr;
890 $arr = &new $object_class($arr);
895 if ($res == null && $this->autofree) {
905 * Fetch a row of data into an array which is passed by reference.
907 * The type of array returned can be controlled either by setting this
908 * method's <var>$fetchmode</var> parameter or by changing the default
909 * fetch mode setFetchMode() before calling this method.
911 * There are two options for standardizing the information returned
912 * from databases, ensuring their values are consistent when changing
913 * DBMS's. These portability options can be turned on when creating a
914 * new DB object or by using setOption().
916 * + <samp>DB_PORTABILITY_LOWERCASE</samp>
917 * convert names of fields to lower case
919 * + <samp>DB_PORTABILITY_RTRIM</samp>
920 * right trim the data
922 * @param array &$arr (reference) array where data from the row
924 * @param int $fetchmode how the resulting array should be indexed
925 * @param int $rownum the row number to fetch
927 * @return mixed DB_OK on success, null on no more rows or
928 * a DB_Error object on error
930 * @see DB_common::setOption(), DB_common::setFetchMode()
933 function fetchInto(&$arr, $fetchmode = DB_FETCHMODE_DEFAULT, $rownum=null)
935 if ($fetchmode === DB_FETCHMODE_DEFAULT) {
936 $fetchmode = $this->fetchmode;
938 if ($fetchmode === DB_FETCHMODE_OBJECT) {
939 $fetchmode = DB_FETCHMODE_ASSOC;
940 $object_class = $this->fetchmode_object_class;
942 if ($this->limit_from !== null) {
943 if ($this->row_counter === null) {
944 $this->row_counter = $this->limit_from;
946 if ($this->limit_type == false) {
948 while ($i++ < $this->limit_from) {
949 $this->dbh->fetchInto($this->result, $arr, $fetchmode);
953 if ($this->row_counter >= (
954 $this->limit_from + $this->limit_count))
956 if ($this->autofree) {
961 if ($this->limit_type == 'emulate') {
962 $rownum = $this->row_counter;
965 $this->row_counter++;
967 $res = $this->dbh->fetchInto($this->result, $arr, $fetchmode, $rownum);
968 if ($res === DB_OK) {
969 if (isset($object_class)) {
970 // default mode specified in DB_common::fetchmode_object_class property
971 if ($object_class == 'stdClass') {
972 $arr = (object) $arr;
974 $arr = new $object_class($arr);
979 if ($res == null && $this->autofree) {
989 * Get the the number of columns in a result set.
991 * @return int the number of columns, or a DB error
997 return $this->dbh->numCols($this->result);
1004 * Get the number of rows in a result set.
1006 * @return int the number of rows, or a DB error
1012 return $this->dbh->numRows($this->result);
1019 * Get the next result if a batch of queries was executed.
1021 * @return bool true if a new result is available or false if not.
1025 function nextResult()
1027 return $this->dbh->nextResult($this->result);
1034 * Frees the resources allocated for this result set.
1035 * @return int error code
1041 $err = $this->dbh->freeResult($this->result);
1042 if (DB::isError($err)) {
1045 $this->result = false;
1055 * @see DB_common::tableInfo()
1057 function tableInfo($mode = null)
1059 if (is_string($mode)) {
1060 return $this->dbh->raiseError(DB_ERROR_NEED_MORE_DATA);
1062 return $this->dbh->tableInfo($this, $mode);
1066 // {{{ getRowCounter()
1069 * returns the actual row number
1072 function getRowCounter()
1074 return $this->row_counter;
1083 * Pear DB Row Object
1084 * @see DB_common::setFetchMode()
1093 * @param resource row data as array
1095 function DB_row(&$arr)
1097 foreach ($arr as $key => $value) {
1098 $this->$key = &$arr[$key];