Go to most recent revision | Blame | Compare with Previous | Last modification | View Log | RSS feed
<?php/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: *//*** Database independent query interface** PHP versions 4 and 5** LICENSE: This source file is subject to version 3.0 of the PHP license* that is available through the world-wide-web at the following URI:* http://www.php.net/license/3_0.txt. If you did not receive a copy of* the PHP License and are unable to obtain it through the web, please* send a note to license@php.net so we can mail you a copy immediately.** @category Database* @package DB* @author Stig Bakken <ssb@php.net>* @author Tomas V.V.Cox <cox@idecnet.com>* @author Daniel Convissor <danielc@php.net>* @copyright 1997-2005 The PHP Group* @license http://www.php.net/license/3_0.txt PHP License 3.0* @version CVS: $Id: DB.php,v 1.80 2005/02/16 02:16:00 danielc Exp $* @link http://pear.php.net/package/DB*//*** Obtain the PEAR class so it can be extended from*/require_once 'PEAR.php';// {{{ constants// {{{ error codes/**#@+* One of PEAR DB's portable error codes.* @see DB_common::errorCode(), DB::errorMessage()** {@internal If you add an error code here, make sure you also add a textual* version of it in DB::errorMessage().}}*//*** The code returned by many methods upon success*/define('DB_OK', 1);/*** Unkown error*/define('DB_ERROR', -1);/*** Syntax error*/define('DB_ERROR_SYNTAX', -2);/*** Tried to insert a duplicate value into a primary or unique index*/define('DB_ERROR_CONSTRAINT', -3);/*** An identifier in the query refers to a non-existant object*/define('DB_ERROR_NOT_FOUND', -4);/*** Tried to create a duplicate object*/define('DB_ERROR_ALREADY_EXISTS', -5);/*** The current driver does not support the action you attempted*/define('DB_ERROR_UNSUPPORTED', -6);/*** The number of parameters does not match the number of placeholders*/define('DB_ERROR_MISMATCH', -7);/*** A literal submitted did not match the data type expected*/define('DB_ERROR_INVALID', -8);/*** The current DBMS does not support the action you attempted*/define('DB_ERROR_NOT_CAPABLE', -9);/*** A literal submitted was too long so the end of it was removed*/define('DB_ERROR_TRUNCATED', -10);/*** A literal number submitted did not match the data type expected*/define('DB_ERROR_INVALID_NUMBER', -11);/*** A literal date submitted did not match the data type expected*/define('DB_ERROR_INVALID_DATE', -12);/*** Attempt to divide something by zero*/define('DB_ERROR_DIVZERO', -13);/*** A database needs to be selected*/define('DB_ERROR_NODBSELECTED', -14);/*** Could not create the object requested*/define('DB_ERROR_CANNOT_CREATE', -15);/*** Could not drop the database requested because it does not exist*/define('DB_ERROR_CANNOT_DROP', -17);/*** An identifier in the query refers to a non-existant table*/define('DB_ERROR_NOSUCHTABLE', -18);/*** An identifier in the query refers to a non-existant column*/define('DB_ERROR_NOSUCHFIELD', -19);/*** The data submitted to the method was inappropriate*/define('DB_ERROR_NEED_MORE_DATA', -20);/*** The attempt to lock the table failed*/define('DB_ERROR_NOT_LOCKED', -21);/*** The number of columns doesn't match the number of values*/define('DB_ERROR_VALUE_COUNT_ON_ROW', -22);/*** The DSN submitted has problems*/define('DB_ERROR_INVALID_DSN', -23);/*** Could not connect to the database*/define('DB_ERROR_CONNECT_FAILED', -24);/*** The PHP extension needed for this DBMS could not be found*/define('DB_ERROR_EXTENSION_NOT_FOUND',-25);/*** The present user has inadequate permissions to perform the task requestd*/define('DB_ERROR_ACCESS_VIOLATION', -26);/*** The database requested does not exist*/define('DB_ERROR_NOSUCHDB', -27);/*** Tried to insert a null value into a column that doesn't allow nulls*/define('DB_ERROR_CONSTRAINT_NOT_NULL',-29);/**#@-*/// }}}// {{{ prepared statement-related/**#@+* Identifiers for the placeholders used in prepared statements.* @see DB_common::prepare()*//*** Indicates a scalar (<kbd>?</kbd>) placeholder was used** Quote and escape the value as necessary.*/define('DB_PARAM_SCALAR', 1);/*** Indicates an opaque (<kbd>&</kbd>) placeholder was used** The value presented is a file name. Extract the contents of that file* and place them in this column.*/define('DB_PARAM_OPAQUE', 2);/*** Indicates a misc (<kbd>!</kbd>) placeholder was used** The value should not be quoted or escaped.*/define('DB_PARAM_MISC', 3);/**#@-*/// }}}// {{{ binary data-related/**#@+* The different ways of returning binary data from queries.*//*** Sends the fetched data straight through to output*/define('DB_BINMODE_PASSTHRU', 1);/*** Lets you return data as usual*/define('DB_BINMODE_RETURN', 2);/*** Converts the data to hex format before returning it** For example the string "123" would become "313233".*/define('DB_BINMODE_CONVERT', 3);/**#@-*/// }}}// {{{ fetch modes/**#@+* Fetch Modes.* @see DB_common::setFetchMode()*//*** Indicates the current default fetch mode should be used* @see DB_common::$fetchmode*/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, make the column name the first level* of the array and put the row number in the second level of the array** This is flipped from the normal behavior, which puts the row numbers* in the first level of the array and the column names in the second level.*/define('DB_FETCHMODE_FLIPPED', 4);/**#@-*//**#@+* Old fetch modes. Left here 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/**#@+* The type of information to return from the tableInfo() method.** Bitwised constants, so they can be combined using <kbd>|</kbd>* and removed using <kbd>^</kbd>.** @see DB_common::tableInfo()** {@internal Since the TABLEINFO constants are bitwised, if more of them are* added in the future, make sure to adjust DB_TABLEINFO_FULL accordingly.}}*/define('DB_TABLEINFO_ORDER', 1);define('DB_TABLEINFO_ORDERTABLE', 2);define('DB_TABLEINFO_FULL', 3);/**#@-*//**#@+* The type of query to create with the automatic query building methods.* @see DB_common::autoPrepare(), DB_common::autoExecute()*/define('DB_AUTOQUERY_INSERT', 1);define('DB_AUTOQUERY_UPDATE', 2);/**#@-*/// }}}// {{{ portability modes/**#@+* Portability Modes.** Bitwised constants, so they can be combined using <kbd>|</kbd>* and removed using <kbd>^</kbd>.** @see DB_common::setOption()** {@internal Since the PORTABILITY constants are bitwised, if more of them are* added in the future, make sure to adjust DB_PORTABILITY_ALL accordingly.}}*//*** Turn off all portability features*/define('DB_PORTABILITY_NONE', 0);/*** Convert names of tables and fields to lower case* when using the get*(), fetch*() and tableInfo() methods*/define('DB_PORTABILITY_LOWERCASE', 1);/*** Right trim the data output by get*() and fetch*()*/define('DB_PORTABILITY_RTRIM', 2);/*** Force reporting the number of rows deleted*/define('DB_PORTABILITY_DELETE_COUNT', 4);/*** Enable hack that makes numRows() work in Oracle*/define('DB_PORTABILITY_NUMROWS', 8);/*** 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.*/define('DB_PORTABILITY_ERRORS', 16);/*** Convert null values to empty strings in data output by* get*() and fetch*()*/define('DB_PORTABILITY_NULL_TO_EMPTY', 32);/*** Turn on all portability features*/define('DB_PORTABILITY_ALL', 63);/**#@-*/// }}}// }}}// {{{ class DB/*** Database independent query interface** 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):* <pre>* 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.* </pre>** @category Database* @package DB* @author Stig Bakken <ssb@php.net>* @author Tomas V.V.Cox <cox@idecnet.com>* @author Daniel Convissor <danielc@php.net>* @copyright 1997-2005 The PHP Group* @license http://www.php.net/license/3_0.txt PHP License 3.0* @version Release: 1.7.6* @link http://pear.php.net/package/DB*/class DB{// {{{ &factory()/*** Create a new DB object for the specified database type but don't* connect to the database** @param string $type the database type (eg "mysql")* @param array $options an associative array of option names and values** @return object a new DB object. A DB_Error object on failure.** @see DB_common::setOption()*/function &factory($type, $options = false){if (!is_array($options)) {$options = array('persistent' => $options);}if (isset($options['debug']) && $options['debug'] >= 2) {// expose php errors with sufficient debug levelinclude_once "DB/{$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;}}return $obj;}// }}}// {{{ &connect()/*** Create a new DB object including a connection to the specified database** Example 1.* <code>* require_once 'DB.php';** $dsn = 'pgsql://user:password@host/database';* $options = array(* 'debug' => 2,* 'portability' => DB_PORTABILITY_ALL,* );** $db =& DB::connect($dsn, $options);* if (PEAR::isError($db)) {* die($db->getMessage());* }* </code>** @param mixed $dsn the string "data source name" or array in the* format returned by DB::parseDSN()* @param array $options an associative array of option names and values** @return object a new DB object. A DB_Error object on failure.** @uses DB_dbase::connect(), DB_fbsql::connect(), DB_ibase::connect(),* DB_ifx::connect(), DB_msql::connect(), DB_mssql::connect(),* DB_mysql::connect(), DB_mysqli::connect(), DB_oci8::connect(),* DB_odbc::connect(), DB_pgsql::connect(), DB_sqlite::connect(),* DB_sybase::connect()** @uses DB::parseDSN(), DB_common::setOption(), PEAR::isError()*/function &connect($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']) && $options['debug'] >= 2) {// expose php errors with sufficient debug levelinclude_once "DB/${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 string the DB API version number*/function apiVersion(){return '1.7.6';}// }}}// {{{ isError()/*** Determines if a variable is a DB_Error object** @param mixed $value the variable to check** @return bool whether $value is DB_Error object*/function isError($value){return is_a($value, 'DB_Error');}// }}}// {{{ isConnection()/*** Determines if a value is a DB_<driver> object** @param mixed $value the value to test** @return bool whether $value is a DB_<driver> object*/function isConnection($value){return (is_object($value) &&is_subclass_of($value, 'db_common') &&method_exists($value, 'simpleQuery'));}// }}}// {{{ isManip()/*** Tell whether a query is a data manipulation or data definition query** Examples of data manipulation queries are INSERT, UPDATE and DELETE.* Examples of data definition queries are CREATE, DROP, ALTER, GRANT,* REVOKE.** @param string $query the query** @return boolean whether $query is a data manipulation query*/function isManip($query){$manips = 'INSERT|UPDATE|DELETE|REPLACE|'. 'CREATE|DROP|'. 'LOAD DATA|SELECT .* INTO|COPY|'. '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 $value the DB error code** @return string the error message or false if the error code was* not recognized*/function errorMessage($value){static $errorMessages;if (!isset($errorMessages)) {$errorMessages = array(DB_ERROR => 'unknown error',DB_ERROR_ACCESS_VIOLATION => 'insufficient permissions',DB_ERROR_ALREADY_EXISTS => 'already exists',DB_ERROR_CANNOT_CREATE => 'can not create',DB_ERROR_CANNOT_DROP => 'can not drop',DB_ERROR_CONNECT_FAILED => 'connect failed',DB_ERROR_CONSTRAINT => 'constraint violation',DB_ERROR_CONSTRAINT_NOT_NULL=> 'null value violates not-null constraint',DB_ERROR_DIVZERO => 'division by zero',DB_ERROR_EXTENSION_NOT_FOUND=> 'extension not found',DB_ERROR_INVALID => 'invalid',DB_ERROR_INVALID_DATE => 'invalid date or time',DB_ERROR_INVALID_DSN => 'invalid DSN',DB_ERROR_INVALID_NUMBER => 'invalid number',DB_ERROR_MISMATCH => 'mismatch',DB_ERROR_NEED_MORE_DATA => 'insufficient data supplied',DB_ERROR_NODBSELECTED => 'no database selected',DB_ERROR_NOSUCHDB => 'no such database',DB_ERROR_NOSUCHFIELD => 'no such field',DB_ERROR_NOSUCHTABLE => 'no such table',DB_ERROR_NOT_CAPABLE => 'DB backend not capable',DB_ERROR_NOT_FOUND => 'not found',DB_ERROR_NOT_LOCKED => 'not locked',DB_ERROR_SYNTAX => 'syntax error',DB_ERROR_UNSUPPORTED => 'not supported',DB_ERROR_TRUNCATED => 'truncated',DB_ERROR_VALUE_COUNT_ON_ROW => 'value count on row',DB_OK => 'no error',);}if (DB::isError($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 $dsn Data Source Name to be parsed** @return array an associative array with the following keys:* + phptype: Database backend used in PHP (mysql, odbc etc.)* + dbsyntax: Database used with regards to SQL syntax etc.* + protocol: Communication protocol to use (tcp, unix etc.)* + hostspec: Host specification (hostname[:port])* + database: Database to use on the DBMS server* + username: User name for login* + password: Password for login*/function parseDSN($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 $dsn;}// Find phptype and dbsyntaxif (($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// $dsn => username:password@protocol+hostspec/databaseif (($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 hostspecif (preg_match('|^([^(]+)\((.*?)\)/?(.*?)$|', $dsn, $match)) {// $dsn => proto(proto_opts)/database$proto = $match[1];$proto_opts = $match[2] ? $match[2] : false;$dsn = $match[3];} else {// $dsn => protocol+hostspec/database (old format)if (strpos($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// $dsn => databaseif ($dsn) {if (($pos = strpos($dsn, '?')) === false) {// /database$parsed['database'] = rawurldecode($dsn);} else {// /database?param1=value1¶m2=value2$parsed['database'] = rawurldecode(substr($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;}// }}}}// }}}// {{{ class DB_Error/*** DB_Error implements a class for reporting portable database error* messages** @category Database* @package DB* @author Stig Bakken <ssb@php.net>* @copyright 1997-2005 The PHP Group* @license http://www.php.net/license/3_0.txt PHP License 3.0* @version Release: 1.7.6* @link http://pear.php.net/package/DB*/class DB_Error extends PEAR_Error{// {{{ constructor/*** DB_Error constructor** @param mixed $code DB error code, or string with error message* @param int $mode what "error mode" to operate in* @param int $level what error level to use for $mode &* PEAR_ERROR_TRIGGER* @param mixed $debuginfo additional debug info, such as the last query** @see PEAR_Error*/function DB_Error($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, $debuginfo);}}// }}}}// }}}// {{{ class DB_result/*** This class implements a wrapper for a DB result set** A new instance of this class will be returned by the DB implementation* after processing a query that returns data.** @category Database* @package DB* @author Stig Bakken <ssb@php.net>* @copyright 1997-2005 The PHP Group* @license http://www.php.net/license/3_0.txt PHP License 3.0* @version Release: 1.7.6* @link http://pear.php.net/package/DB*/class DB_result{// {{{ properties/*** Should results be freed automatically when there are no more rows?* @var boolean* @see DB_common::$options*/var $autofree;/*** A reference to the DB_<driver> object* @var object*/var $dbh;/*** The current default fetch mode* @var integer* @see DB_common::$fetchmode*/var $fetchmode;/*** The name of the class into which results should be fetched when* DB_FETCHMODE_OBJECT is in effect** @var string* @see DB_common::$fetchmode_object_class*/var $fetchmode_object_class;/*** The number of rows to fetch from a limit query* @var integer*/var $limit_count = null;/*** The row to start fetching from in limit queries* @var integer*/var $limit_from = null;/*** The execute parameters that created this result* @var array* @since Property available since Release 1.7.0*/var $parameters;/*** The query string that created this result** Copied here incase it changes in $dbh, which is referenced** @var string* @since Property available since Release 1.7.0*/var $query;/*** The query result resource id created by PHP* @var resource*/var $result;/*** The present row being dealt with* @var integer*/var $row_counter = null;/*** The prepared statement resource id created by PHP in $dbh** This resource is only available when the result set was created using* a driver's native execute() method, not PEAR DB's emulated one.** Copied here incase it changes in $dbh, which is referenced** {@internal Mainly here because the InterBase/Firebird API is only* able to retrieve data from result sets if the statemnt handle is* still in scope.}}** @var resource* @since Property available since Release 1.7.0*/var $statement;// }}}// {{{ constructor/*** This constructor sets the object's properties** @param object &$dbh the DB object reference* @param resource $result the result resource id* @param array $options an associative array with result options** @return void*/function DB_result(&$dbh, $result, $options = array()){$this->autofree = $dbh->options['autofree'];$this->dbh = &$dbh;$this->fetchmode = $dbh->fetchmode;$this->fetchmode_object_class = $dbh->fetchmode_object_class;$this->parameters = $dbh->last_parameters;$this->query = $dbh->last_query;$this->result = $result;$this->statement = empty($dbh->last_stmt) ? null : $dbh->last_stmt;foreach ($options as $key => $value) {$this->setOption($key, $value);}}/*** Set options for the DB_result object** @param string $key the option to set* @param mixed $value the value to set the option to** @return void*/function setOption($key, $value = null){switch ($key) {case 'limit_from':$this->limit_from = $value;break;case 'limit_count':$this->limit_count = $value;}}// }}}// {{{ fetchRow()/*** Fetch a row of data and return it by reference into an array** The type of array returned can be controlled either by setting this* method's <var>$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().** + <var>DB_PORTABILITY_LOWERCASE</var>* convert names of fields to lower case** + <var>DB_PORTABILITY_RTRIM</var>* right trim the data** @param int $fetchmode the constant indicating how to format the data* @param int $rownum the row number to fetch (index starts at 0)** @return mixed an array or object containing the row's data,* NULL when the end of the result set is reached* or a DB_Error object on failure.** @see DB_common::setOption(), DB_common::setFetchMode()*/function &fetchRow($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 = $this->limit_from;// Skip rowsif ($this->dbh->features['limit'] === 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->dbh->features['limit'] === 'emulate') {$rownum = $this->row_counter;}$this->row_counter++;}$res = $this->dbh->fetchInto($this->result, $arr, $fetchmode, $rownum);if ($res === DB_OK) {if (isset($object_class)) {// The default mode is specified in the// DB_common::fetchmode_object_class propertyif ($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().** + <var>DB_PORTABILITY_LOWERCASE</var>* convert names of fields to lower case** + <var>DB_PORTABILITY_RTRIM</var>* right trim the data** @param array &$arr the variable where the data should be placed* @param int $fetchmode the constant indicating how to format the data* @param int $rownum the row number to fetch (index starts at 0)** @return mixed DB_OK if a row is processed, NULL when the end of the* result set is reached or a DB_Error object on failure** @see DB_common::setOption(), DB_common::setFetchMode()*/function fetchInto(&$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 = $this->limit_from;// Skip rowsif ($this->dbh->features['limit'] === 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->dbh->features['limit'] === 'emulate') {$rownum = $this->row_counter;}$this->row_counter++;}$res = $this->dbh->fetchInto($this->result, $arr, $fetchmode, $rownum);if ($res === DB_OK) {if (isset($object_class)) {// default mode specified in the// DB_common::fetchmode_object_class propertyif ($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. A DB_Error object on failure.*/function numCols(){return $this->dbh->numCols($this->result);}// }}}// {{{ numRows()/*** Get the number of rows in a result set** @return int the number of rows. A DB_Error object on failure.*/function numRows(){if ($this->dbh->features['numrows'] === 'emulate'&& $this->dbh->options['portability'] & DB_PORTABILITY_NUMROWS){if ($this->dbh->features['prepare']) {$res = $this->dbh->query($this->query, $this->parameters);} else {$res = $this->dbh->query($this->query);}if (DB::isError($res)) {return $res;}$i = 0;while ($res->fetchInto($tmp, DB_FETCHMODE_ORDERED)) {$i++;}return $i;} else {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*/function nextResult(){return $this->dbh->nextResult($this->result);}// }}}// {{{ free()/*** Frees the resources allocated for this result set** @return bool true on success. A DB_Error object on failure.*/function free(){$err = $this->dbh->freeResult($this->result);if (DB::isError($err)) {return $err;}$this->result = false;$this->statement = false;return true;}// }}}// {{{ tableInfo()/*** @see DB_common::tableInfo()* @deprecated Method deprecated some time before Release 1.2*/function tableInfo($mode = null){if (is_string($mode)) {return $this->dbh->raiseError(DB_ERROR_NEED_MORE_DATA);}return $this->dbh->tableInfo($this, $mode);}// }}}// {{{ getQuery()/*** Determine the query string that created this result** @return string the query string** @since Method available since Release 1.7.0*/function getQuery(){return $this->query;}// }}}// {{{ getRowCounter()/*** Tells which row number is currently being processed** @return integer the current row being looked at. Starts at 1.*/function getRowCounter(){return $this->row_counter;}// }}}}// }}}// {{{ class DB_row/*** PEAR DB Row Object** The object contains a row of data from a result set. Each column's data* is placed in a property named for the column.** @category Database* @package DB* @author Stig Bakken <ssb@php.net>* @copyright 1997-2005 The PHP Group* @license http://www.php.net/license/3_0.txt PHP License 3.0* @version Release: 1.7.6* @link http://pear.php.net/package/DB* @see DB_common::setFetchMode()*/class DB_row{// {{{ constructor/*** The constructor places a row's data into properties of this object** @param array the array containing the row's data** @return void*/function DB_row(&$arr){foreach ($arr as $key => $value) {$this->$key = &$arr[$key];}}// }}}}// }}}/** Local variables:* tab-width: 4* c-basic-offset: 4* End:*/?>