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-<?php
-
-/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
-
-/**
- * The PEAR DB driver for PHP's mysql extension
- * for interacting with MySQL databases
- *
- * 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 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: mysql.php 32 2005-08-01 06:21:02Z dancoulter $
- * @link http://pear.php.net/package/DB
- */
-
-/**
- * Obtain the DB_common class so it can be extended from
- */
-require_once 'DB/common.php';
-
-/**
- * The methods PEAR DB uses to interact with PHP's mysql extension
- * for interacting with MySQL databases
- *
- * These methods overload the ones declared in DB_common.
- *
- * @category Database
- * @package DB
- * @author Stig Bakken <ssb@php.net>
- * @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: @package_version@
- * @link http://pear.php.net/package/DB
- */
-class DB_mysql extends DB_common
-{
- // {{{ properties
-
- /**
- * The DB driver type (mysql, oci8, odbc, etc.)
- * @var string
- */
- var $phptype = 'mysql';
-
- /**
- * The database syntax variant to be used (db2, access, etc.), if any
- * @var string
- */
- var $dbsyntax = 'mysql';
-
- /**
- * The capabilities of this DB implementation
- *
- * The 'new_link' element contains the PHP version that first provided
- * new_link support for this DBMS. Contains false if it's unsupported.
- *
- * Meaning of the 'limit' element:
- * + 'emulate' = emulate with fetch row by number
- * + 'alter' = alter the query
- * + false = skip rows
- *
- * @var array
- */
- var $features = array(
- 'limit' => 'alter',
- 'new_link' => '4.2.0',
- 'numrows' => true,
- 'pconnect' => true,
- 'prepare' => false,
- 'ssl' => false,
- 'transactions' => true,
- );
-
- /**
- * A mapping of native error codes to DB error codes
- * @var array
- */
- var $errorcode_map = array(
- 1004 => DB_ERROR_CANNOT_CREATE,
- 1005 => DB_ERROR_CANNOT_CREATE,
- 1006 => DB_ERROR_CANNOT_CREATE,
- 1007 => DB_ERROR_ALREADY_EXISTS,
- 1008 => DB_ERROR_CANNOT_DROP,
- 1022 => DB_ERROR_ALREADY_EXISTS,
- 1044 => DB_ERROR_ACCESS_VIOLATION,
- 1046 => DB_ERROR_NODBSELECTED,
- 1048 => DB_ERROR_CONSTRAINT,
- 1049 => DB_ERROR_NOSUCHDB,
- 1050 => DB_ERROR_ALREADY_EXISTS,
- 1051 => DB_ERROR_NOSUCHTABLE,
- 1054 => DB_ERROR_NOSUCHFIELD,
- 1061 => DB_ERROR_ALREADY_EXISTS,
- 1062 => DB_ERROR_ALREADY_EXISTS,
- 1064 => DB_ERROR_SYNTAX,
- 1091 => DB_ERROR_NOT_FOUND,
- 1100 => DB_ERROR_NOT_LOCKED,
- 1136 => DB_ERROR_VALUE_COUNT_ON_ROW,
- 1142 => DB_ERROR_ACCESS_VIOLATION,
- 1146 => DB_ERROR_NOSUCHTABLE,
- 1216 => DB_ERROR_CONSTRAINT,
- 1217 => DB_ERROR_CONSTRAINT,
- );
-
- /**
- * The raw database connection created by PHP
- * @var resource
- */
- var $connection;
-
- /**
- * The DSN information for connecting to a database
- * @var array
- */
- var $dsn = array();
-
-
- /**
- * Should data manipulation queries be committed automatically?
- * @var bool
- * @access private
- */
- var $autocommit = true;
-
- /**
- * The quantity of transactions begun
- *
- * {@internal While this is private, it can't actually be designated
- * private in PHP 5 because it is directly accessed in the test suite.}}
- *
- * @var integer
- * @access private
- */
- var $transaction_opcount = 0;
-
- /**
- * The database specified in the DSN
- *
- * It's a fix to allow calls to different databases in the same script.
- *
- * @var string
- * @access private
- */
- var $_db = '';
-
-
- // }}}
- // {{{ constructor
-
- /**
- * This constructor calls <kbd>$this->DB_common()</kbd>
- *
- * @return void
- */
- function DB_mysql()
- {
- $this->DB_common();
- }
-
- // }}}
- // {{{ connect()
-
- /**
- * Connect to the database server, log in and open the database
- *
- * Don't call this method directly. Use DB::connect() instead.
- *
- * PEAR DB's mysql driver supports the following extra DSN options:
- * + new_link If set to true, causes subsequent calls to connect()
- * to return a new connection link instead of the
- * existing one. WARNING: this is not portable to
- * other DBMS's. Available since PEAR DB 1.7.0.
- * + client_flags Any combination of MYSQL_CLIENT_* constants.
- * Only used if PHP is at version 4.3.0 or greater.
- * Available since PEAR DB 1.7.0.
- *
- * @param array $dsn the data source name
- * @param bool $persistent should the connection be persistent?
- *
- * @return int DB_OK on success. A DB_Error object on failure.
- */
- function connect($dsn, $persistent = false)
- {
- if (!PEAR::loadExtension('mysql')) {
- return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND);
- }
-
- $this->dsn = $dsn;
- if ($dsn['dbsyntax']) {
- $this->dbsyntax = $dsn['dbsyntax'];
- }
-
- $params = array();
- if ($dsn['protocol'] && $dsn['protocol'] == 'unix') {
- $params[0] = ':' . $dsn['socket'];
- } else {
- $params[0] = $dsn['hostspec'] ? $dsn['hostspec']
- : 'localhost';
- if ($dsn['port']) {
- $params[0] .= ':' . $dsn['port'];
- }
- }
- $params[] = $dsn['username'] ? $dsn['username'] : null;
- $params[] = $dsn['password'] ? $dsn['password'] : null;
-
- if (!$persistent) {
- if (isset($dsn['new_link'])
- && ($dsn['new_link'] == 'true' || $dsn['new_link'] === true))
- {
- $params[] = true;
- } else {
- $params[] = false;
- }
- }
- if (version_compare(phpversion(), '4.3.0', '>=')) {
- $params[] = isset($dsn['client_flags'])
- ? $dsn['client_flags'] : null;
- }
-
- $connect_function = $persistent ? 'mysql_pconnect' : 'mysql_connect';
-
- $ini = ini_get('track_errors');
- $php_errormsg = '';
- if ($ini) {
- $this->connection = @call_user_func_array($connect_function,
- $params);
- } else {
- ini_set('track_errors', 1);
- $this->connection = @call_user_func_array($connect_function,
- $params);
- ini_set('track_errors', $ini);
- }
-
- if (!$this->connection) {
- if (($err = @mysql_error()) != '') {
- return $this->raiseError(DB_ERROR_CONNECT_FAILED,
- null, null, null,
- $err);
- } else {
- return $this->raiseError(DB_ERROR_CONNECT_FAILED,
- null, null, null,
- $php_errormsg);
- }
- }
-
- if ($dsn['database']) {
- if (!@mysql_select_db($dsn['database'], $this->connection)) {
- return $this->mysqlRaiseError();
- }
- $this->_db = $dsn['database'];
- }
-
- return DB_OK;
- }
-
- // }}}
- // {{{ disconnect()
-
- /**
- * Disconnects from the database server
- *
- * @return bool TRUE on success, FALSE on failure
- */
- function disconnect()
- {
- $ret = @mysql_close($this->connection);
- $this->connection = null;
- return $ret;
- }
-
- // }}}
- // {{{ simpleQuery()
-
- /**
- * Sends a query to the database server
- *
- * Generally uses mysql_query(). If you want to use
- * mysql_unbuffered_query() set the "result_buffering" option to 0 using
- * setOptions(). This option was added in Release 1.7.0.
- *
- * @param string the SQL query string
- *
- * @return mixed + a PHP result resrouce for successful SELECT queries
- * + the DB_OK constant for other successful queries
- * + a DB_Error object on failure
- */
- function simpleQuery($query)
- {
- $ismanip = DB::isManip($query);
- $this->last_query = $query;
- $query = $this->modifyQuery($query);
- if ($this->_db) {
- if (!@mysql_select_db($this->_db, $this->connection)) {
- return $this->mysqlRaiseError(DB_ERROR_NODBSELECTED);
- }
- }
- if (!$this->autocommit && $ismanip) {
- if ($this->transaction_opcount == 0) {
- $result = @mysql_query('SET AUTOCOMMIT=0', $this->connection);
- $result = @mysql_query('BEGIN', $this->connection);
- if (!$result) {
- return $this->mysqlRaiseError();
- }
- }
- $this->transaction_opcount++;
- }
- if (!$this->options['result_buffering']) {
- $result = @mysql_unbuffered_query($query, $this->connection);
- } else {
- $result = @mysql_query($query, $this->connection);
- }
- if (!$result) {
- return $this->mysqlRaiseError();
- }
- if (is_resource($result)) {
- return $result;
- }
- return DB_OK;
- }
-
- // }}}
- // {{{ nextResult()
-
- /**
- * Move the internal mysql result pointer to the next available result
- *
- * This method has not been implemented yet.
- *
- * @param a valid sql result resource
- *
- * @return false
- */
- function nextResult($result)
- {
- return false;
- }
-
- // }}}
- // {{{ fetchInto()
-
- /**
- * Places a row from the result set into the given array
- *
- * Formating of the array and the data therein are configurable.
- * See DB_result::fetchInto() for more information.
- *
- * This method is not meant to be called directly. Use
- * DB_result::fetchInto() instead. It can't be declared "protected"
- * because DB_result is a separate object.
- *
- * @param resource $result the query result resource
- * @param array $arr the referenced array to put the data in
- * @param int $fetchmode how the resulting array should be indexed
- * @param int $rownum the row number to fetch (0 = first row)
- *
- * @return mixed DB_OK on success, NULL when the end of a result set is
- * reached or on failure
- *
- * @see DB_result::fetchInto()
- */
- function fetchInto($result, &$arr, $fetchmode, $rownum = null)
- {
- if ($rownum !== null) {
- if (!@mysql_data_seek($result, $rownum)) {
- return null;
- }
- }
- if ($fetchmode & DB_FETCHMODE_ASSOC) {
- $arr = @mysql_fetch_array($result, MYSQL_ASSOC);
- if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE && $arr) {
- $arr = array_change_key_case($arr, CASE_LOWER);
- }
- } else {
- $arr = @mysql_fetch_row($result);
- }
- if (!$arr) {
- return null;
- }
- if ($this->options['portability'] & DB_PORTABILITY_RTRIM) {
- /*
- * Even though this DBMS already trims output, we do this because
- * a field might have intentional whitespace at the end that
- * gets removed by DB_PORTABILITY_RTRIM under another driver.
- */
- $this->_rtrimArrayValues($arr);
- }
- if ($this->options['portability'] & DB_PORTABILITY_NULL_TO_EMPTY) {
- $this->_convertNullArrayValuesToEmpty($arr);
- }
- return DB_OK;
- }
-
- // }}}
- // {{{ freeResult()
-
- /**
- * Deletes the result set and frees the memory occupied by the result set
- *
- * This method is not meant to be called directly. Use
- * DB_result::free() instead. It can't be declared "protected"
- * because DB_result is a separate object.
- *
- * @param resource $result PHP's query result resource
- *
- * @return bool TRUE on success, FALSE if $result is invalid
- *
- * @see DB_result::free()
- */
- function freeResult($result)
- {
- return @mysql_free_result($result);
- }
-
- // }}}
- // {{{ numCols()
-
- /**
- * Gets the number of columns in a result set
- *
- * This method is not meant to be called directly. Use
- * DB_result::numCols() instead. It can't be declared "protected"
- * because DB_result is a separate object.
- *
- * @param resource $result PHP's query result resource
- *
- * @return int the number of columns. A DB_Error object on failure.
- *
- * @see DB_result::numCols()
- */
- function numCols($result)
- {
- $cols = @mysql_num_fields($result);
- if (!$cols) {
- return $this->mysqlRaiseError();
- }
- return $cols;
- }
-
- // }}}
- // {{{ numRows()
-
- /**
- * Gets the number of rows in a result set
- *
- * This method is not meant to be called directly. Use
- * DB_result::numRows() instead. It can't be declared "protected"
- * because DB_result is a separate object.
- *
- * @param resource $result PHP's query result resource
- *
- * @return int the number of rows. A DB_Error object on failure.
- *
- * @see DB_result::numRows()
- */
- function numRows($result)
- {
- $rows = @mysql_num_rows($result);
- if ($rows === null) {
- return $this->mysqlRaiseError();
- }
- return $rows;
- }
-
- // }}}
- // {{{ autoCommit()
-
- /**
- * Enables or disables automatic commits
- *
- * @param bool $onoff true turns it on, false turns it off
- *
- * @return int DB_OK on success. A DB_Error object if the driver
- * doesn't support auto-committing transactions.
- */
- function autoCommit($onoff = false)
- {
- // XXX if $this->transaction_opcount > 0, we should probably
- // issue a warning here.
- $this->autocommit = $onoff ? true : false;
- return DB_OK;
- }
-
- // }}}
- // {{{ commit()
-
- /**
- * Commits the current transaction
- *
- * @return int DB_OK on success. A DB_Error object on failure.
- */
- function commit()
- {
- if ($this->transaction_opcount > 0) {
- if ($this->_db) {
- if (!@mysql_select_db($this->_db, $this->connection)) {
- return $this->mysqlRaiseError(DB_ERROR_NODBSELECTED);
- }
- }
- $result = @mysql_query('COMMIT', $this->connection);
- $result = @mysql_query('SET AUTOCOMMIT=1', $this->connection);
- $this->transaction_opcount = 0;
- if (!$result) {
- return $this->mysqlRaiseError();
- }
- }
- return DB_OK;
- }
-
- // }}}
- // {{{ rollback()
-
- /**
- * Reverts the current transaction
- *
- * @return int DB_OK on success. A DB_Error object on failure.
- */
- function rollback()
- {
- if ($this->transaction_opcount > 0) {
- if ($this->_db) {
- if (!@mysql_select_db($this->_db, $this->connection)) {
- return $this->mysqlRaiseError(DB_ERROR_NODBSELECTED);
- }
- }
- $result = @mysql_query('ROLLBACK', $this->connection);
- $result = @mysql_query('SET AUTOCOMMIT=1', $this->connection);
- $this->transaction_opcount = 0;
- if (!$result) {
- return $this->mysqlRaiseError();
- }
- }
- return DB_OK;
- }
-
- // }}}
- // {{{ affectedRows()
-
- /**
- * Determines the number of rows affected by a data maniuplation query
- *
- * 0 is returned for queries that don't manipulate data.
- *
- * @return int the number of rows. A DB_Error object on failure.
- */
- function affectedRows()
- {
- if (DB::isManip($this->last_query)) {
- return @mysql_affected_rows($this->connection);
- } else {
- return 0;
- }
- }
-
- // }}}
- // {{{ nextId()
-
- /**
- * Returns the next free id in a sequence
- *
- * @param string $seq_name name of the sequence
- * @param boolean $ondemand when true, the seqence is automatically
- * created if it does not exist
- *
- * @return int the next id number in the sequence.
- * A DB_Error object on failure.
- *
- * @see DB_common::nextID(), DB_common::getSequenceName(),
- * DB_mysql::createSequence(), DB_mysql::dropSequence()
- */
- function nextId($seq_name, $ondemand = true)
- {
- $seqname = $this->getSequenceName($seq_name);
- do {
- $repeat = 0;
- $this->pushErrorHandling(PEAR_ERROR_RETURN);
- $result = $this->query("UPDATE ${seqname} ".
- 'SET id=LAST_INSERT_ID(id+1)');
- $this->popErrorHandling();
- if ($result === DB_OK) {
- // COMMON CASE
- $id = @mysql_insert_id($this->connection);
- if ($id != 0) {
- return $id;
- }
- // EMPTY SEQ TABLE
- // Sequence table must be empty for some reason, so fill
- // it and return 1 and obtain a user-level lock
- $result = $this->getOne("SELECT GET_LOCK('${seqname}_lock',10)");
- if (DB::isError($result)) {
- return $this->raiseError($result);
- }
- if ($result == 0) {
- // Failed to get the lock
- return $this->mysqlRaiseError(DB_ERROR_NOT_LOCKED);
- }
-
- // add the default value
- $result = $this->query("REPLACE INTO ${seqname} (id) VALUES (0)");
- if (DB::isError($result)) {
- return $this->raiseError($result);
- }
-
- // Release the lock
- $result = $this->getOne('SELECT RELEASE_LOCK('
- . "'${seqname}_lock')");
- if (DB::isError($result)) {
- return $this->raiseError($result);
- }
- // We know what the result will be, so no need to try again
- return 1;
-
- } elseif ($ondemand && DB::isError($result) &&
- $result->getCode() == DB_ERROR_NOSUCHTABLE)
- {
- // ONDEMAND TABLE CREATION
- $result = $this->createSequence($seq_name);
- if (DB::isError($result)) {
- return $this->raiseError($result);
- } else {
- $repeat = 1;
- }
-
- } elseif (DB::isError($result) &&
- $result->getCode() == DB_ERROR_ALREADY_EXISTS)
- {
- // BACKWARDS COMPAT
- // see _BCsequence() comment
- $result = $this->_BCsequence($seqname);
- if (DB::isError($result)) {
- return $this->raiseError($result);
- }
- $repeat = 1;
- }
- } while ($repeat);
-
- return $this->raiseError($result);
- }
-
- // }}}
- // {{{ createSequence()
-
- /**
- * Creates a new sequence
- *
- * @param string $seq_name name of the new sequence
- *
- * @return int DB_OK on success. A DB_Error object on failure.
- *
- * @see DB_common::createSequence(), DB_common::getSequenceName(),
- * DB_mysql::nextID(), DB_mysql::dropSequence()
- */
- function createSequence($seq_name)
- {
- $seqname = $this->getSequenceName($seq_name);
- $res = $this->query('CREATE TABLE ' . $seqname
- . ' (id INTEGER UNSIGNED AUTO_INCREMENT NOT NULL,'
- . ' PRIMARY KEY(id))');
- if (DB::isError($res)) {
- return $res;
- }
- // insert yields value 1, nextId call will generate ID 2
- $res = $this->query("INSERT INTO ${seqname} (id) VALUES (0)");
- if (DB::isError($res)) {
- return $res;
- }
- // so reset to zero
- return $this->query("UPDATE ${seqname} SET id = 0");
- }
-
- // }}}
- // {{{ dropSequence()
-
- /**
- * Deletes a sequence
- *
- * @param string $seq_name name of the sequence to be deleted
- *
- * @return int DB_OK on success. A DB_Error object on failure.
- *
- * @see DB_common::dropSequence(), DB_common::getSequenceName(),
- * DB_mysql::nextID(), DB_mysql::createSequence()
- */
- function dropSequence($seq_name)
- {
- return $this->query('DROP TABLE ' . $this->getSequenceName($seq_name));
- }
-
- // }}}
- // {{{ _BCsequence()
-
- /**
- * Backwards compatibility with old sequence emulation implementation
- * (clean up the dupes)
- *
- * @param string $seqname the sequence name to clean up
- *
- * @return bool true on success. A DB_Error object on failure.
- *
- * @access private
- */
- function _BCsequence($seqname)
- {
- // Obtain a user-level lock... this will release any previous
- // application locks, but unlike LOCK TABLES, it does not abort
- // the current transaction and is much less frequently used.
- $result = $this->getOne("SELECT GET_LOCK('${seqname}_lock',10)");
- if (DB::isError($result)) {
- return $result;
- }
- if ($result == 0) {
- // Failed to get the lock, can't do the conversion, bail
- // with a DB_ERROR_NOT_LOCKED error
- return $this->mysqlRaiseError(DB_ERROR_NOT_LOCKED);
- }
-
- $highest_id = $this->getOne("SELECT MAX(id) FROM ${seqname}");
- if (DB::isError($highest_id)) {
- return $highest_id;
- }
- // This should kill all rows except the highest
- // We should probably do something if $highest_id isn't
- // numeric, but I'm at a loss as how to handle that...
- $result = $this->query('DELETE FROM ' . $seqname
- . " WHERE id <> $highest_id");
- if (DB::isError($result)) {
- return $result;
- }
-
- // If another thread has been waiting for this lock,
- // it will go thru the above procedure, but will have no
- // real effect
- $result = $this->getOne("SELECT RELEASE_LOCK('${seqname}_lock')");
- if (DB::isError($result)) {
- return $result;
- }
- return true;
- }
-
- // }}}
- // {{{ quoteIdentifier()
-
- /**
- * Quotes a string so it can be safely used as a table or column name
- *
- * MySQL can't handle the backtick character (<kbd>`</kbd>) in
- * table or column names.
- *
- * @param string $str identifier name to be quoted
- *
- * @return string quoted identifier string
- *
- * @see DB_common::quoteIdentifier()
- * @since Method available since Release 1.6.0
- */
- function quoteIdentifier($str)
- {
- return '`' . $str . '`';
- }
-
- // }}}
- // {{{ quote()
-
- /**
- * @deprecated Deprecated in release 1.6.0
- */
- function quote($str)
- {
- return $this->quoteSmart($str);
- }
-
- // }}}
- // {{{ escapeSimple()
-
- /**
- * Escapes a string according to the current DBMS's standards
- *
- * @param string $str the string to be escaped
- *
- * @return string the escaped string
- *
- * @see DB_common::quoteSmart()
- * @since Method available since Release 1.6.0
- */
- function escapeSimple($str)
- {
- if (function_exists('mysql_real_escape_string')) {
- return @mysql_real_escape_string($str, $this->connection);
- } else {
- return @mysql_escape_string($str);
- }
- }
-
- // }}}
- // {{{ modifyQuery()
-
- /**
- * Changes a query string for various DBMS specific reasons
- *
- * This little hack lets you know how many rows were deleted
- * when running a "DELETE FROM table" query. Only implemented
- * if the DB_PORTABILITY_DELETE_COUNT portability option is on.
- *
- * @param string $query the query string to modify
- *
- * @return string the modified query string
- *
- * @access protected
- * @see DB_common::setOption()
- */
- function modifyQuery($query)
- {
- if ($this->options['portability'] & DB_PORTABILITY_DELETE_COUNT) {
- // "DELETE FROM table" gives 0 affected rows in MySQL.
- // This little hack lets you know how many rows were deleted.
- if (preg_match('/^\s*DELETE\s+FROM\s+(\S+)\s*$/i', $query)) {
- $query = preg_replace('/^\s*DELETE\s+FROM\s+(\S+)\s*$/',
- 'DELETE FROM \1 WHERE 1=1', $query);
- }
- }
- return $query;
- }
-
- // }}}
- // {{{ modifyLimitQuery()
-
- /**
- * Adds LIMIT clauses to a query string according to current DBMS standards
- *
- * @param string $query the query to modify
- * @param int $from the row to start to fetching (0 = the first row)
- * @param int $count the numbers of rows to fetch
- * @param mixed $params array, string or numeric data to be used in
- * execution of the statement. Quantity of items
- * passed must match quantity of placeholders in
- * query: meaning 1 placeholder for non-array
- * parameters or 1 placeholder per array element.
- *
- * @return string the query string with LIMIT clauses added
- *
- * @access protected
- */
- function modifyLimitQuery($query, $from, $count, $params = array())
- {
- if (DB::isManip($query)) {
- return $query . " LIMIT $count";
- } else {
- return $query . " LIMIT $from, $count";
- }
- }
-
- // }}}
- // {{{ mysqlRaiseError()
-
- /**
- * Produces a DB_Error object regarding the current problem
- *
- * @param int $errno if the error is being manually raised pass a
- * DB_ERROR* constant here. If this isn't passed
- * the error information gathered from the DBMS.
- *
- * @return object the DB_Error object
- *
- * @see DB_common::raiseError(),
- * DB_mysql::errorNative(), DB_common::errorCode()
- */
- function mysqlRaiseError($errno = null)
- {
- if ($errno === null) {
- if ($this->options['portability'] & DB_PORTABILITY_ERRORS) {
- $this->errorcode_map[1022] = DB_ERROR_CONSTRAINT;
- $this->errorcode_map[1048] = DB_ERROR_CONSTRAINT_NOT_NULL;
- $this->errorcode_map[1062] = DB_ERROR_CONSTRAINT;
- } else {
- // Doing this in case mode changes during runtime.
- $this->errorcode_map[1022] = DB_ERROR_ALREADY_EXISTS;
- $this->errorcode_map[1048] = DB_ERROR_CONSTRAINT;
- $this->errorcode_map[1062] = DB_ERROR_ALREADY_EXISTS;
- }
- $errno = $this->errorCode(mysql_errno($this->connection));
- }
- return $this->raiseError($errno, null, null, null,
- @mysql_errno($this->connection) . ' ** ' .
- @mysql_error($this->connection));
- }
-
- // }}}
- // {{{ errorNative()
-
- /**
- * Gets the DBMS' native error code produced by the last query
- *
- * @return int the DBMS' error code
- */
- function errorNative()
- {
- return @mysql_errno($this->connection);
- }
-
- // }}}
- // {{{ tableInfo()
-
- /**
- * Returns information about a table or a result set
- *
- * @param object|string $result DB_result object from a query or a
- * string containing the name of a table.
- * While this also accepts a query result
- * resource identifier, this behavior is
- * deprecated.
- * @param int $mode a valid tableInfo mode
- *
- * @return array an associative array with the information requested.
- * A DB_Error object on failure.
- *
- * @see DB_common::tableInfo()
- */
- function tableInfo($result, $mode = null)
- {
- if (is_string($result)) {
- /*
- * Probably received a table name.
- * Create a result resource identifier.
- */
- $id = @mysql_list_fields($this->dsn['database'],
- $result, $this->connection);
- $got_string = true;
- } elseif (isset($result->result)) {
- /*
- * Probably received a result object.
- * Extract the result resource identifier.
- */
- $id = $result->result;
- $got_string = false;
- } else {
- /*
- * Probably received a result resource identifier.
- * Copy it.
- * Deprecated. Here for compatibility only.
- */
- $id = $result;
- $got_string = false;
- }
-
- if (!is_resource($id)) {
- return $this->mysqlRaiseError(DB_ERROR_NEED_MORE_DATA);
- }
-
- if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE) {
- $case_func = 'strtolower';
- } else {
- $case_func = 'strval';
- }
-
- $count = @mysql_num_fields($id);
- $res = array();
-
- if ($mode) {
- $res['num_fields'] = $count;
- }
-
- for ($i = 0; $i < $count; $i++) {
- $res[$i] = array(
- 'table' => $case_func(@mysql_field_table($id, $i)),
- 'name' => $case_func(@mysql_field_name($id, $i)),
- 'type' => @mysql_field_type($id, $i),
- 'len' => @mysql_field_len($id, $i),
- 'flags' => @mysql_field_flags($id, $i),
- );
- if ($mode & DB_TABLEINFO_ORDER) {
- $res['order'][$res[$i]['name']] = $i;
- }
- if ($mode & DB_TABLEINFO_ORDERTABLE) {
- $res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
- }
- }
-
- // free the result only if we were called on a table
- if ($got_string) {
- @mysql_free_result($id);
- }
- return $res;
- }
-
- // }}}
- // {{{ getSpecialQuery()
-
- /**
- * Obtains the query string needed for listing a given type of objects
- *
- * @param string $type the kind of objects you want to retrieve
- *
- * @return string the SQL query string or null if the driver doesn't
- * support the object type requested
- *
- * @access protected
- * @see DB_common::getListOf()
- */
- function getSpecialQuery($type)
- {
- switch ($type) {
- case 'tables':
- return 'SHOW TABLES';
- case 'users':
- return 'SELECT DISTINCT User FROM mysql.user';
- case 'databases':
- return 'SHOW DATABASES';
- default:
- return null;
- }
- }
-
- // }}}
-
-}
-
-/*
- * Local variables:
- * tab-width: 4
- * c-basic-offset: 4
- * End:
- */
-
-?>
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