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- <?php
- /* vim: set expandtab tabstop=4 shiftwidth=4 foldmethod=marker: */
- // +----------------------------------------------------------------------+
- // | PHP Version 4 |
- // +----------------------------------------------------------------------+
- // | 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. |
- // +----------------------------------------------------------------------+
- // | Authors: Stig Bakken <ssb@php.net> |
- // | Tomas V.V.Cox <cox@idecnet.com> |
- // | Maintainer: Daniel Convissor <danielc@php.net> |
- // +----------------------------------------------------------------------+
- //
- // $Id: DB.php,v 1.59 2004/07/08 21:15:11 danielc Exp $
- //
- // Database independent query interface.
-
-
- require_once 'PEAR.php';
-
- // {{{ constants
- // {{{ error codes
-
- /*
- * The method mapErrorCode in each DB_dbtype implementation maps
- * native error codes to one of these.
- *
- * If you add an error code here, make sure you also add a textual
- * version of it in DB::errorMessage().
- */
- define('DB_OK', 1);
- define('DB_ERROR', -1);
- define('DB_ERROR_SYNTAX', -2);
- define('DB_ERROR_CONSTRAINT', -3);
- define('DB_ERROR_NOT_FOUND', -4);
- define('DB_ERROR_ALREADY_EXISTS', -5);
- define('DB_ERROR_UNSUPPORTED', -6);
- define('DB_ERROR_MISMATCH', -7);
- define('DB_ERROR_INVALID', -8);
- define('DB_ERROR_NOT_CAPABLE', -9);
- define('DB_ERROR_TRUNCATED', -10);
- define('DB_ERROR_INVALID_NUMBER', -11);
- define('DB_ERROR_INVALID_DATE', -12);
- define('DB_ERROR_DIVZERO', -13);
- define('DB_ERROR_NODBSELECTED', -14);
- define('DB_ERROR_CANNOT_CREATE', -15);
- define('DB_ERROR_CANNOT_DELETE', -16);
- define('DB_ERROR_CANNOT_DROP', -17);
- define('DB_ERROR_NOSUCHTABLE', -18);
- define('DB_ERROR_NOSUCHFIELD', -19);
- define('DB_ERROR_NEED_MORE_DATA', -20);
- define('DB_ERROR_NOT_LOCKED', -21);
- define('DB_ERROR_VALUE_COUNT_ON_ROW', -22);
- define('DB_ERROR_INVALID_DSN', -23);
- define('DB_ERROR_CONNECT_FAILED', -24);
- define('DB_ERROR_EXTENSION_NOT_FOUND',-25);
- define('DB_ERROR_ACCESS_VIOLATION', -26);
- define('DB_ERROR_NOSUCHDB', -27);
- define('DB_ERROR_CONSTRAINT_NOT_NULL',-29);
-
-
- // }}}
- // {{{ prepared statement-related
-
-
- /*
- * These constants are used when storing information about prepared
- * statements (using the "prepare" method in DB_dbtype).
- *
- * The prepare/execute model in DB is mostly borrowed from the ODBC
- * extension, in a query the "?" character means a scalar parameter.
- * There are two extensions though, a "&" character means an opaque
- * parameter. An opaque parameter is simply a file name, the real
- * data are in that file (useful for putting uploaded files into your
- * database and such). The "!" char means a parameter that must be
- * left as it is.
- * They modify the quote behavoir:
- * DB_PARAM_SCALAR (?) => 'original string quoted'
- * DB_PARAM_OPAQUE (&) => 'string from file quoted'
- * DB_PARAM_MISC (!) => original string
- */
- define('DB_PARAM_SCALAR', 1);
- define('DB_PARAM_OPAQUE', 2);
- define('DB_PARAM_MISC', 3);
-
-
- // }}}
- // {{{ binary data-related
-
-
- /*
- * These constants define different ways of returning binary data
- * from queries. Again, this model has been borrowed from the ODBC
- * extension.
- *
- * DB_BINMODE_PASSTHRU sends the data directly through to the browser
- * when data is fetched from the database.
- * DB_BINMODE_RETURN lets you return data as usual.
- * DB_BINMODE_CONVERT returns data as well, only it is converted to
- * hex format, for example the string "123" would become "313233".
- */
- define('DB_BINMODE_PASSTHRU', 1);
- define('DB_BINMODE_RETURN', 2);
- define('DB_BINMODE_CONVERT', 3);
-
-
- // }}}
- // {{{ fetch modes
-
-
- /**
- * This is a special constant that tells DB the user hasn't specified
- * any particular get mode, so the default should be used.
- */
- define('DB_FETCHMODE_DEFAULT', 0);
-
- /**
- * Column data indexed by numbers, ordered from 0 and up
- */
- define('DB_FETCHMODE_ORDERED', 1);
-
- /**
- * Column data indexed by column names
- */
- define('DB_FETCHMODE_ASSOC', 2);
-
- /**
- * Column data as object properties
- */
- define('DB_FETCHMODE_OBJECT', 3);
-
- /**
- * For multi-dimensional results: normally the first level of arrays
- * is the row number, and the second level indexed by column number or name.
- * DB_FETCHMODE_FLIPPED switches this order, so the first level of arrays
- * is the column name, and the second level the row number.
- */
- define('DB_FETCHMODE_FLIPPED', 4);
-
- /* for compatibility */
- define('DB_GETMODE_ORDERED', DB_FETCHMODE_ORDERED);
- define('DB_GETMODE_ASSOC', DB_FETCHMODE_ASSOC);
- define('DB_GETMODE_FLIPPED', DB_FETCHMODE_FLIPPED);
-
-
- // }}}
- // {{{ tableInfo() && autoPrepare()-related
-
-
- /**
- * these are constants for the tableInfo-function
- * they are bitwised or'ed. so if there are more constants to be defined
- * in the future, adjust DB_TABLEINFO_FULL accordingly
- */
- define('DB_TABLEINFO_ORDER', 1);
- define('DB_TABLEINFO_ORDERTABLE', 2);
- define('DB_TABLEINFO_FULL', 3);
-
- /*
- * Used by autoPrepare()
- */
- define('DB_AUTOQUERY_INSERT', 1);
- define('DB_AUTOQUERY_UPDATE', 2);
-
-
- // }}}
- // {{{ portability modes
-
-
- /**
- * Portability: turn off all portability features.
- * @see DB_common::setOption()
- */
- define('DB_PORTABILITY_NONE', 0);
-
- /**
- * Portability: convert names of tables and fields to lower case
- * when using the get*(), fetch*() and tableInfo() methods.
- * @see DB_common::setOption()
- */
- define('DB_PORTABILITY_LOWERCASE', 1);
-
- /**
- * Portability: right trim the data output by get*() and fetch*().
- * @see DB_common::setOption()
- */
- define('DB_PORTABILITY_RTRIM', 2);
-
- /**
- * Portability: force reporting the number of rows deleted.
- * @see DB_common::setOption()
- */
- define('DB_PORTABILITY_DELETE_COUNT', 4);
-
- /**
- * Portability: enable hack that makes numRows() work in Oracle.
- * @see DB_common::setOption()
- */
- define('DB_PORTABILITY_NUMROWS', 8);
-
- /**
- * Portability: makes certain error messages in certain drivers compatible
- * with those from other DBMS's.
- *
- * + mysql, mysqli: change unique/primary key constraints
- * DB_ERROR_ALREADY_EXISTS -> DB_ERROR_CONSTRAINT
- *
- * + odbc(access): MS's ODBC driver reports 'no such field' as code
- * 07001, which means 'too few parameters.' When this option is on
- * that code gets mapped to DB_ERROR_NOSUCHFIELD.
- *
- * @see DB_common::setOption()
- */
- define('DB_PORTABILITY_ERRORS', 16);
-
- /**
- * Portability: convert null values to empty strings in data output by
- * get*() and fetch*().
- * @see DB_common::setOption()
- */
- define('DB_PORTABILITY_NULL_TO_EMPTY', 32);
-
- /**
- * Portability: turn on all portability features.
- * @see DB_common::setOption()
- */
- define('DB_PORTABILITY_ALL', 63);
-
- // }}}
-
-
- // }}}
- // {{{ class DB
-
- /**
- * The main "DB" class is simply a container class with some static
- * methods for creating DB objects as well as some utility functions
- * common to all parts of DB.
- *
- * The object model of DB is as follows (indentation means inheritance):
- *
- * DB The main DB class. This is simply a utility class
- * with some "static" methods for creating DB objects as
- * well as common utility functions for other DB classes.
- *
- * DB_common The base for each DB implementation. Provides default
- * | implementations (in OO lingo virtual methods) for
- * | the actual DB implementations as well as a bunch of
- * | query utility functions.
- * |
- * +-DB_mysql The DB implementation for MySQL. Inherits DB_common.
- * When calling DB::factory or DB::connect for MySQL
- * connections, the object returned is an instance of this
- * class.
- *
- * @package DB
- * @author Stig Bakken <ssb@php.net>
- * @author Tomas V.V.Cox <cox@idecnet.com>
- * @since PHP 4.0
- * @version $Id: DB.php,v 1.59 2004/07/08 21:15:11 danielc Exp $
- * @category Database
- */
- class DB
- {
- // {{{ &factory()
-
- /**
- * Create a new DB object for the specified database type.
- *
- * Allows creation of a DB_<driver> object from which the object's
- * methods can be utilized without actually connecting to a database.
- *
- * @param string $type database type, for example "mysql"
- * @param array $options associative array of option names and values
- *
- * @return object a new DB object. On error, an error object.
- *
- * @see DB_common::setOption()
- * @access public
- */
- function &factory($type, $options = false)
- {
- if (!is_array($options)) {
- $options = array('persistent' => $options);
- }
-
- if (isset($options['debug']) && $options['debug'] >= 2) {
- // expose php errors with sufficient debug level
- include_once "DB/{$type}.php";
- } else {
- @include_once "DB/{$type}.php";
- }
-
- $classname = "DB_${type}";
-
- if (!class_exists($classname)) {
- $tmp = PEAR::raiseError(null, DB_ERROR_NOT_FOUND, null, null,
- "Unable to include the DB/{$type}.php file",
- 'DB_Error', true);
- return $tmp;
- }
-
- @$obj =& new $classname;
-
- foreach ($options as $option => $value) {
- $test = $obj->setOption($option, $value);
- if (DB::isError($test)) {
- return $test;
- }
- }
-
- return $obj;
- }
-
- // }}}
- // {{{ &connect()
-
- /**
- * Create a new DB object and connect to the specified database.
- *
- * Example 1.
- * <code> <?php
- * require_once 'DB.php';
- *
- * $dsn = 'mysql://user:password@host/database'
- * $options = array(
- * 'debug' => 2,
- * 'portability' => DB_PORTABILITY_ALL,
- * );
- *
- * $dbh =& DB::connect($dsn, $options);
- * if (DB::isError($dbh)) {
- * die($dbh->getMessage());
- * }
- * ?></code>
- *
- * @param mixed $dsn string "data source name" or an array in the
- * format returned by DB::parseDSN()
- *
- * @param array $options an associative array of option names and
- * their values
- *
- * @return object a newly created DB connection object, or a DB
- * error object on error
- *
- * @see DB::parseDSN(), DB_common::setOption(), DB::isError()
- * @access public
- */
- function &connect($dsn, $options = array())
- {
- $dsninfo = DB::parseDSN($dsn);
- $type = $dsninfo['phptype'];
-
- if (!is_array($options)) {
- /*
- * For backwards compatibility. $options used to be boolean,
- * indicating whether the connection should be persistent.
- */
- $options = array('persistent' => $options);
- }
-
- if (isset($options['debug']) && $options['debug'] >= 2) {
- // expose php errors with sufficient debug level
- include_once "DB/${type}.php";
- } else {
- @include_once "DB/${type}.php";
- }
-
- $classname = "DB_${type}";
- if (!class_exists($classname)) {
- $tmp = PEAR::raiseError(null, DB_ERROR_NOT_FOUND, null, null,
- "Unable to include the DB/{$type}.php file for `$dsn'",
- 'DB_Error', true);
- return $tmp;
- }
-
- @$obj =& new $classname;
-
- foreach ($options as $option => $value) {
- $test = $obj->setOption($option, $value);
- if (DB::isError($test)) {
- return $test;
- }
- }
-
- $err = $obj->connect($dsninfo, $obj->getOption('persistent'));
- if (DB::isError($err)) {
- $err->addUserInfo($dsn);
- return $err;
- }
-
- return $obj;
- }
-
- // }}}
- // {{{ apiVersion()
-
- /**
- * Return the DB API version
- *
- * @return int the DB API version number
- *
- * @access public
- */
- function apiVersion()
- {
- return 2;
- }
-
- // }}}
- // {{{ isError()
-
- /**
- * Tell whether a result code from a DB method is an error
- *
- * @param int $value result code
- *
- * @return bool whether $value is an error
- *
- * @access public
- */
- function isError($value)
- {
- return is_a($value, 'DB_Error');
- }
-
- // }}}
- // {{{ isConnection()
-
- /**
- * Tell whether a value is a DB connection
- *
- * @param mixed $value value to test
- *
- * @return bool whether $value is a DB connection
- *
- * @access public
- */
- function isConnection($value)
- {
- return (is_object($value) &&
- is_subclass_of($value, 'db_common') &&
- method_exists($value, 'simpleQuery'));
- }
-
- // }}}
- // {{{ isManip()
-
- /**
- * Tell whether a query is a data manipulation query (insert,
- * update or delete) or a data definition query (create, drop,
- * alter, grant, revoke).
- *
- * @access public
- *
- * @param string $query the query
- *
- * @return boolean whether $query is a data manipulation query
- */
- function isManip($query)
- {
- $manips = 'INSERT|UPDATE|DELETE|LOAD DATA|'.'REPLACE|CREATE|DROP|'.
- 'ALTER|GRANT|REVOKE|'.'LOCK|UNLOCK';
- if (preg_match('/^\s*"?('.$manips.')\s+/i', $query)) {
- return true;
- }
- return false;
- }
-
- // }}}
- // {{{ errorMessage()
-
- /**
- * Return a textual error message for a DB error code
- *
- * @param integer $value error code
- *
- * @return string error message, or false if the error code was
- * not recognized
- */
- function errorMessage($value)
- {
- static $errorMessages;
- if (!isset($errorMessages)) {
- $errorMessages = array(
- DB_ERROR => 'unknown error',
- DB_ERROR_ALREADY_EXISTS => 'already exists',
- DB_ERROR_CANNOT_CREATE => 'can not create',
- DB_ERROR_CANNOT_DELETE => 'can not delete',
- DB_ERROR_CANNOT_DROP => 'can not drop',
- DB_ERROR_CONSTRAINT => 'constraint violation',
- DB_ERROR_CONSTRAINT_NOT_NULL=> 'null value violates not-null constraint',
- DB_ERROR_DIVZERO => 'division by zero',
- DB_ERROR_INVALID => 'invalid',
- DB_ERROR_INVALID_DATE => 'invalid date or time',
- DB_ERROR_INVALID_NUMBER => 'invalid number',
- DB_ERROR_MISMATCH => 'mismatch',
- DB_ERROR_NODBSELECTED => 'no database selected',
- DB_ERROR_NOSUCHFIELD => 'no such field',
- DB_ERROR_NOSUCHTABLE => 'no such table',
- DB_ERROR_NOT_CAPABLE => 'DB backend not capable',
- DB_ERROR_NOT_FOUND => 'not found',
- DB_ERROR_NOT_LOCKED => 'not locked',
- DB_ERROR_SYNTAX => 'syntax error',
- DB_ERROR_UNSUPPORTED => 'not supported',
- DB_ERROR_VALUE_COUNT_ON_ROW => 'value count on row',
- DB_ERROR_INVALID_DSN => 'invalid DSN',
- DB_ERROR_CONNECT_FAILED => 'connect failed',
- DB_OK => 'no error',
- DB_ERROR_NEED_MORE_DATA => 'insufficient data supplied',
- DB_ERROR_EXTENSION_NOT_FOUND=> 'extension not found',
- DB_ERROR_NOSUCHDB => 'no such database',
- DB_ERROR_ACCESS_VIOLATION => 'insufficient permissions',
- DB_ERROR_TRUNCATED => 'truncated'
- );
- }
-
- if (DB::isError($value)) {
- $value = $value->getCode();
- }
-
- return isset($errorMessages[$value]) ? $errorMessages[$value] : $errorMessages[DB_ERROR];
- }
-
- // }}}
- // {{{ parseDSN()
-
- /**
- * Parse a data source name.
- *
- * Additional keys can be added by appending a URI query string to the
- * end of the DSN.
- *
- * The format of the supplied DSN is in its fullest form:
- * <code>
- * phptype(dbsyntax)://username:password@protocol+hostspec/database?option=8&another=true
- * </code>
- *
- * Most variations are allowed:
- * <code>
- * phptype://username:password@protocol+hostspec:110//usr/db_file.db?mode=0644
- * phptype://username:password@hostspec/database_name
- * phptype://username:password@hostspec
- * phptype://username@hostspec
- * phptype://hostspec/database
- * phptype://hostspec
- * phptype(dbsyntax)
- * phptype
- * </code>
- *
- * @param string $dsn Data Source Name to be parsed
- *
- * @return array an associative array with the following keys:
- * + phptype: Database backend used in PHP (mysql, odbc etc.)
- * + dbsyntax: Database used with regards to SQL syntax etc.
- * + protocol: Communication protocol to use (tcp, unix etc.)
- * + hostspec: Host specification (hostname[:port])
- * + database: Database to use on the DBMS server
- * + username: User name for login
- * + password: Password for login
- *
- * @author Tomas V.V.Cox <cox@idecnet.com>
- */
- function parseDSN($dsn)
- {
- $parsed = array(
- 'phptype' => false,
- 'dbsyntax' => false,
- 'username' => false,
- 'password' => false,
- 'protocol' => false,
- 'hostspec' => false,
- 'port' => false,
- 'socket' => false,
- 'database' => false,
- );
-
- if (is_array($dsn)) {
- $dsn = array_merge($parsed, $dsn);
- if (!$dsn['dbsyntax']) {
- $dsn['dbsyntax'] = $dsn['phptype'];
- }
- return $dsn;
- }
-
- // Find phptype and dbsyntax
- if (($pos = strpos($dsn, '://')) !== false) {
- $str = substr($dsn, 0, $pos);
- $dsn = substr($dsn, $pos + 3);
- } else {
- $str = $dsn;
- $dsn = null;
- }
-
- // Get phptype and dbsyntax
- // $str => phptype(dbsyntax)
- if (preg_match('|^(.+?)\((.*?)\)$|', $str, $arr)) {
- $parsed['phptype'] = $arr[1];
- $parsed['dbsyntax'] = !$arr[2] ? $arr[1] : $arr[2];
- } else {
- $parsed['phptype'] = $str;
- $parsed['dbsyntax'] = $str;
- }
-
- if (!count($dsn)) {
- return $parsed;
- }
-
- // Get (if found): username and password
- // $dsn => username:password@protocol+hostspec/database
- if (($at = strrpos($dsn,'@')) !== false) {
- $str = substr($dsn, 0, $at);
- $dsn = substr($dsn, $at + 1);
- if (($pos = strpos($str, ':')) !== false) {
- $parsed['username'] = rawurldecode(substr($str, 0, $pos));
- $parsed['password'] = rawurldecode(substr($str, $pos + 1));
- } else {
- $parsed['username'] = rawurldecode($str);
- }
- }
-
- // Find protocol and hostspec
-
- // $dsn => proto(proto_opts)/database
- if (preg_match('|^([^(]+)\((.*?)\)/?(.*?)$|', $dsn, $match)) {
- $proto = $match[1];
- $proto_opts = $match[2] ? $match[2] : false;
- $dsn = $match[3];
-
- // $dsn => protocol+hostspec/database (old format)
- } else {
- if (strpos($dsn, '+') !== false) {
- list($proto, $dsn) = explode('+', $dsn, 2);
- }
- if (strpos($dsn, '/') !== false) {
- list($proto_opts, $dsn) = explode('/', $dsn, 2);
- } else {
- $proto_opts = $dsn;
- $dsn = null;
- }
- }
-
- // process the different protocol options
- $parsed['protocol'] = (!empty($proto)) ? $proto : 'tcp';
- $proto_opts = rawurldecode($proto_opts);
- if ($parsed['protocol'] == 'tcp') {
- if (strpos($proto_opts, ':') !== false) {
- list($parsed['hostspec'], $parsed['port']) = explode(':', $proto_opts);
- } else {
- $parsed['hostspec'] = $proto_opts;
- }
- } elseif ($parsed['protocol'] == 'unix') {
- $parsed['socket'] = $proto_opts;
- }
-
- // Get dabase if any
- // $dsn => database
- if ($dsn) {
- // /database
- if (($pos = strpos($dsn, '?')) === false) {
- $parsed['database'] = rawurldecode($dsn);
- // /database?param1=value1¶m2=value2
- } else {
- $parsed['database'] = rawurldecode(substr($dsn, 0, $pos));
- $dsn = substr($dsn, $pos + 1);
- if (strpos($dsn, '&') !== false) {
- $opts = explode('&', $dsn);
- } else { // database?param1=value1
- $opts = array($dsn);
- }
- foreach ($opts as $opt) {
- list($key, $value) = explode('=', $opt);
- if (!isset($parsed[$key])) {
- // don't allow params overwrite
- $parsed[$key] = rawurldecode($value);
- }
- }
- }
- }
-
- return $parsed;
- }
-
- // }}}
- // {{{ assertExtension()
-
- /**
- * Load a PHP database extension if it is not loaded already.
- *
- * @access public
- *
- * @param string $name the base name of the extension (without the .so or
- * .dll suffix)
- *
- * @return boolean true if the extension was already or successfully
- * loaded, false if it could not be loaded
- */
- function assertExtension($name)
- {
- if (!extension_loaded($name)) {
- $dlext = OS_WINDOWS ? '.dll' : '.so';
- $dlprefix = OS_WINDOWS ? 'php_' : '';
- @dl($dlprefix . $name . $dlext);
- return extension_loaded($name);
- }
- return true;
- }
- // }}}
- }
-
- // }}}
- // {{{ class DB_Error
-
- /**
- * DB_Error implements a class for reporting portable database error
- * messages.
- *
- * @package DB
- * @author Stig Bakken <ssb@php.net>
- */
- class DB_Error extends PEAR_Error
- {
- // {{{ constructor
-
- /**
- * DB_Error constructor.
- *
- * @param mixed $code DB error code, or string with error message.
- * @param integer $mode what "error mode" to operate in
- * @param integer $level what error level to use for $mode & PEAR_ERROR_TRIGGER
- * @param mixed $debuginfo additional debug info, such as the last query
- *
- * @access public
- *
- * @see PEAR_Error
- */
- function DB_Error($code = DB_ERROR, $mode = PEAR_ERROR_RETURN,
- $level = E_USER_NOTICE, $debuginfo = null)
- {
- if (is_int($code)) {
- $this->PEAR_Error('DB Error: ' . DB::errorMessage($code), $code, $mode, $level, $debuginfo);
- } else {
- $this->PEAR_Error("DB Error: $code", DB_ERROR, $mode, $level, $debuginfo);
- }
- }
- // }}}
- }
-
- // }}}
- // {{{ class DB_result
-
- /**
- * This class implements a wrapper for a DB result set.
- * A new instance of this class will be returned by the DB implementation
- * after processing a query that returns data.
- *
- * @package DB
- * @author Stig Bakken <ssb@php.net>
- */
- class DB_result
- {
- // {{{ properties
-
- var $dbh;
- var $result;
- var $row_counter = null;
-
- /**
- * for limit queries, the row to start fetching
- * @var integer
- */
- var $limit_from = null;
-
- /**
- * for limit queries, the number of rows to fetch
- * @var integer
- */
- var $limit_count = null;
-
- // }}}
- // {{{ constructor
-
- /**
- * DB_result constructor.
- * @param resource &$dbh DB object reference
- * @param resource $result result resource id
- * @param array $options assoc array with optional result options
- */
- function DB_result(&$dbh, $result, $options = array())
- {
- $this->dbh = &$dbh;
- $this->result = $result;
- foreach ($options as $key => $value) {
- $this->setOption($key, $value);
- }
- $this->limit_type = $dbh->features['limit'];
- $this->autofree = $dbh->options['autofree'];
- $this->fetchmode = $dbh->fetchmode;
- $this->fetchmode_object_class = $dbh->fetchmode_object_class;
- }
-
- function setOption($key, $value = null)
- {
- switch ($key) {
- case 'limit_from':
- $this->limit_from = $value; break;
- case 'limit_count':
- $this->limit_count = $value; break;
- }
- }
-
- // }}}
- // {{{ fetchRow()
-
- /**
- * Fetch a row of data and return it by reference into an array.
- *
- * The type of array returned can be controlled either by setting this
- * method's <var>$fetchmode</var> parameter or by changing the default
- * fetch mode setFetchMode() before calling this method.
- *
- * There are two options for standardizing the information returned
- * from databases, ensuring their values are consistent when changing
- * DBMS's. These portability options can be turned on when creating a
- * new DB object or by using setOption().
- *
- * + <samp>DB_PORTABILITY_LOWERCASE</samp>
- * convert names of fields to lower case
- *
- * + <samp>DB_PORTABILITY_RTRIM</samp>
- * right trim the data
- *
- * @param int $fetchmode how the resulting array should be indexed
- * @param int $rownum the row number to fetch
- *
- * @return array a row of data, null on no more rows or PEAR_Error
- * object on error
- *
- * @see DB_common::setOption(), DB_common::setFetchMode()
- * @access public
- */
- function &fetchRow($fetchmode = DB_FETCHMODE_DEFAULT, $rownum=null)
- {
- if ($fetchmode === DB_FETCHMODE_DEFAULT) {
- $fetchmode = $this->fetchmode;
- }
- if ($fetchmode === DB_FETCHMODE_OBJECT) {
- $fetchmode = DB_FETCHMODE_ASSOC;
- $object_class = $this->fetchmode_object_class;
- }
- if ($this->limit_from !== null) {
- if ($this->row_counter === null) {
- $this->row_counter = $this->limit_from;
- // Skip rows
- if ($this->limit_type == false) {
- $i = 0;
- while ($i++ < $this->limit_from) {
- $this->dbh->fetchInto($this->result, $arr, $fetchmode);
- }
- }
- }
- if ($this->row_counter >= (
- $this->limit_from + $this->limit_count))
- {
- if ($this->autofree) {
- $this->free();
- }
- $tmp = null;
- return $tmp;
- }
- if ($this->limit_type == 'emulate') {
- $rownum = $this->row_counter;
- }
- $this->row_counter++;
- }
- $res = $this->dbh->fetchInto($this->result, $arr, $fetchmode, $rownum);
- if ($res === DB_OK) {
- if (isset($object_class)) {
- // default mode specified in DB_common::fetchmode_object_class property
- if ($object_class == 'stdClass') {
- $arr = (object) $arr;
- } else {
- $arr = &new $object_class($arr);
- }
- }
- return $arr;
- }
- if ($res == null && $this->autofree) {
- $this->free();
- }
- return $res;
- }
-
- // }}}
- // {{{ fetchInto()
-
- /**
- * Fetch a row of data into an array which is passed by reference.
- *
- * The type of array returned can be controlled either by setting this
- * method's <var>$fetchmode</var> parameter or by changing the default
- * fetch mode setFetchMode() before calling this method.
- *
- * There are two options for standardizing the information returned
- * from databases, ensuring their values are consistent when changing
- * DBMS's. These portability options can be turned on when creating a
- * new DB object or by using setOption().
- *
- * + <samp>DB_PORTABILITY_LOWERCASE</samp>
- * convert names of fields to lower case
- *
- * + <samp>DB_PORTABILITY_RTRIM</samp>
- * right trim the data
- *
- * @param array &$arr (reference) array where data from the row
- * should be placed
- * @param int $fetchmode how the resulting array should be indexed
- * @param int $rownum the row number to fetch
- *
- * @return mixed DB_OK on success, null on no more rows or
- * a DB_Error object on error
- *
- * @see DB_common::setOption(), DB_common::setFetchMode()
- * @access public
- */
- function fetchInto(&$arr, $fetchmode = DB_FETCHMODE_DEFAULT, $rownum=null)
- {
- if ($fetchmode === DB_FETCHMODE_DEFAULT) {
- $fetchmode = $this->fetchmode;
- }
- if ($fetchmode === DB_FETCHMODE_OBJECT) {
- $fetchmode = DB_FETCHMODE_ASSOC;
- $object_class = $this->fetchmode_object_class;
- }
- if ($this->limit_from !== null) {
- if ($this->row_counter === null) {
- $this->row_counter = $this->limit_from;
- // Skip rows
- if ($this->limit_type == false) {
- $i = 0;
- while ($i++ < $this->limit_from) {
- $this->dbh->fetchInto($this->result, $arr, $fetchmode);
- }
- }
- }
- if ($this->row_counter >= (
- $this->limit_from + $this->limit_count))
- {
- if ($this->autofree) {
- $this->free();
- }
- return null;
- }
- if ($this->limit_type == 'emulate') {
- $rownum = $this->row_counter;
- }
-
- $this->row_counter++;
- }
- $res = $this->dbh->fetchInto($this->result, $arr, $fetchmode, $rownum);
- if ($res === DB_OK) {
- if (isset($object_class)) {
- // default mode specified in DB_common::fetchmode_object_class property
- if ($object_class == 'stdClass') {
- $arr = (object) $arr;
- } else {
- $arr = new $object_class($arr);
- }
- }
- return DB_OK;
- }
- if ($res == null && $this->autofree) {
- $this->free();
- }
- return $res;
- }
-
- // }}}
- // {{{ numCols()
-
- /**
- * Get the the number of columns in a result set.
- *
- * @return int the number of columns, or a DB error
- *
- * @access public
- */
- function numCols()
- {
- return $this->dbh->numCols($this->result);
- }
-
- // }}}
- // {{{ numRows()
-
- /**
- * Get the number of rows in a result set.
- *
- * @return int the number of rows, or a DB error
- *
- * @access public
- */
- function numRows()
- {
- return $this->dbh->numRows($this->result);
- }
-
- // }}}
- // {{{ nextResult()
-
- /**
- * Get the next result if a batch of queries was executed.
- *
- * @return bool true if a new result is available or false if not.
- *
- * @access public
- */
- function nextResult()
- {
- return $this->dbh->nextResult($this->result);
- }
-
- // }}}
- // {{{ free()
-
- /**
- * Frees the resources allocated for this result set.
- * @return int error code
- *
- * @access public
- */
- function free()
- {
- $err = $this->dbh->freeResult($this->result);
- if (DB::isError($err)) {
- return $err;
- }
- $this->result = false;
- return true;
- }
-
- // }}}
- // {{{ tableInfo()
-
- /**
- * @deprecated
- * @internal
- * @see DB_common::tableInfo()
- */
- function tableInfo($mode = null)
- {
- if (is_string($mode)) {
- return $this->dbh->raiseError(DB_ERROR_NEED_MORE_DATA);
- }
- return $this->dbh->tableInfo($this, $mode);
- }
-
- // }}}
- // {{{ getRowCounter()
-
- /**
- * returns the actual row number
- * @return integer
- */
- function getRowCounter()
- {
- return $this->row_counter;
- }
- // }}}
- }
-
- // }}}
- // {{{ class DB_row
-
- /**
- * Pear DB Row Object
- * @see DB_common::setFetchMode()
- */
- class DB_row
- {
- // {{{ constructor
-
- /**
- * constructor
- *
- * @param resource row data as array
- */
- function DB_row(&$arr)
- {
- foreach ($arr as $key => $value) {
- $this->$key = &$arr[$key];
- }
- }
-
- // }}}
- }
-
- // }}}
-
- /*
- * Local variables:
- * tab-width: 4
- * c-basic-offset: 4
- * End:
- */
-
- ?>
-