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-<?php
-
-/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
-
-/**
- * The PEAR DB driver for PHP's mysqli 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 Daniel Convissor <danielc@php.net>
- * @copyright 1997-2007 The PHP Group
- * @license http://www.php.net/license/3_0.txt PHP License 3.0
- * @version CVS: $Id$
- * @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 mysqli extension
- * for interacting with MySQL databases
- *
- * This is for MySQL versions 4.1 and above. Requires PHP 5.
- *
- * Note that persistent connections no longer exist.
- *
- * These methods overload the ones declared in DB_common.
- *
- * @category Database
- * @package DB
- * @author Daniel Convissor <danielc@php.net>
- * @copyright 1997-2007 The PHP Group
- * @license http://www.php.net/license/3_0.txt PHP License 3.0
- * @version Release: 1.7.13
- * @link http://pear.php.net/package/DB
- * @since Class functional since Release 1.6.3
- */
-class DB_mysqli extends DB_common
-{
- // {{{ properties
-
- /**
- * The DB driver type (mysql, oci8, odbc, etc.)
- * @var string
- */
- var $phptype = 'mysqli';
-
- /**
- * The database syntax variant to be used (db2, access, etc.), if any
- * @var string
- */
- var $dbsyntax = 'mysqli';
-
- /**
- * 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' => false,
- 'numrows' => true,
- 'pconnect' => false,
- 'prepare' => false,
- 'ssl' => true,
- '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,
- 1356 => DB_ERROR_DIVZERO,
- 1451 => DB_ERROR_CONSTRAINT,
- 1452 => 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 = '';
-
- /**
- * Array for converting MYSQLI_*_FLAG constants to text values
- * @var array
- * @access public
- * @since Property available since Release 1.6.5
- */
- var $mysqli_flags = array(
- MYSQLI_NOT_NULL_FLAG => 'not_null',
- MYSQLI_PRI_KEY_FLAG => 'primary_key',
- MYSQLI_UNIQUE_KEY_FLAG => 'unique_key',
- MYSQLI_MULTIPLE_KEY_FLAG => 'multiple_key',
- MYSQLI_BLOB_FLAG => 'blob',
- MYSQLI_UNSIGNED_FLAG => 'unsigned',
- MYSQLI_ZEROFILL_FLAG => 'zerofill',
- MYSQLI_AUTO_INCREMENT_FLAG => 'auto_increment',
- MYSQLI_TIMESTAMP_FLAG => 'timestamp',
- MYSQLI_SET_FLAG => 'set',
- // MYSQLI_NUM_FLAG => 'numeric', // unnecessary
- // MYSQLI_PART_KEY_FLAG => 'multiple_key', // duplicatvie
- MYSQLI_GROUP_FLAG => 'group_by'
- );
-
- /**
- * Array for converting MYSQLI_TYPE_* constants to text values
- * @var array
- * @access public
- * @since Property available since Release 1.6.5
- */
- var $mysqli_types = array(
- MYSQLI_TYPE_DECIMAL => 'decimal',
- MYSQLI_TYPE_TINY => 'tinyint',
- MYSQLI_TYPE_SHORT => 'int',
- MYSQLI_TYPE_LONG => 'int',
- MYSQLI_TYPE_FLOAT => 'float',
- MYSQLI_TYPE_DOUBLE => 'double',
- // MYSQLI_TYPE_NULL => 'DEFAULT NULL', // let flags handle it
- MYSQLI_TYPE_TIMESTAMP => 'timestamp',
- MYSQLI_TYPE_LONGLONG => 'bigint',
- MYSQLI_TYPE_INT24 => 'mediumint',
- MYSQLI_TYPE_DATE => 'date',
- MYSQLI_TYPE_TIME => 'time',
- MYSQLI_TYPE_DATETIME => 'datetime',
- MYSQLI_TYPE_YEAR => 'year',
- MYSQLI_TYPE_NEWDATE => 'date',
- MYSQLI_TYPE_ENUM => 'enum',
- MYSQLI_TYPE_SET => 'set',
- MYSQLI_TYPE_TINY_BLOB => 'tinyblob',
- MYSQLI_TYPE_MEDIUM_BLOB => 'mediumblob',
- MYSQLI_TYPE_LONG_BLOB => 'longblob',
- MYSQLI_TYPE_BLOB => 'blob',
- MYSQLI_TYPE_VAR_STRING => 'varchar',
- MYSQLI_TYPE_STRING => 'char',
- MYSQLI_TYPE_GEOMETRY => 'geometry',
- /* These constants are conditionally compiled in ext/mysqli, so we'll
- * define them by number rather than constant. */
- 16 => 'bit',
- 246 => 'decimal',
- );
-
-
- // }}}
- // {{{ constructor
-
- /**
- * This constructor calls <kbd>$this->DB_common()</kbd>
- *
- * @return void
- */
- function DB_mysqli()
- {
- $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 mysqli driver supports the following extra DSN options:
- * + When the 'ssl' $option passed to DB::connect() is true:
- * + key The path to the key file.
- * + cert The path to the certificate file.
- * + ca The path to the certificate authority file.
- * + capath The path to a directory that contains trusted SSL
- * CA certificates in pem format.
- * + cipher The list of allowable ciphers for SSL encryption.
- *
- * Example of how to connect using SSL:
- * <code>
- * require_once 'DB.php';
- *
- * $dsn = array(
- * 'phptype' => 'mysqli',
- * 'username' => 'someuser',
- * 'password' => 'apasswd',
- * 'hostspec' => 'localhost',
- * 'database' => 'thedb',
- * 'key' => 'client-key.pem',
- * 'cert' => 'client-cert.pem',
- * 'ca' => 'cacert.pem',
- * 'capath' => '/path/to/ca/dir',
- * 'cipher' => 'AES',
- * );
- *
- * $options = array(
- * 'ssl' => true,
- * );
- *
- * $db = DB::connect($dsn, $options);
- * if (PEAR::isError($db)) {
- * die($db->getMessage());
- * }
- * </code>
- *
- * @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('mysqli')) {
- return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND);
- }
-
- $this->dsn = $dsn;
- if ($dsn['dbsyntax']) {
- $this->dbsyntax = $dsn['dbsyntax'];
- }
-
- $ini = ini_get('track_errors');
- @ini_set('track_errors', 1);
- $php_errormsg = '';
-
- if (((int) $this->getOption('ssl')) === 1) {
- $init = mysqli_init();
- mysqli_ssl_set(
- $init,
- empty($dsn['key']) ? null : $dsn['key'],
- empty($dsn['cert']) ? null : $dsn['cert'],
- empty($dsn['ca']) ? null : $dsn['ca'],
- empty($dsn['capath']) ? null : $dsn['capath'],
- empty($dsn['cipher']) ? null : $dsn['cipher']
- );
- if ($this->connection = @mysqli_real_connect(
- $init,
- $dsn['hostspec'],
- $dsn['username'],
- $dsn['password'],
- $dsn['database'],
- $dsn['port'],
- $dsn['socket']))
- {
- $this->connection = $init;
- }
- } else {
- $this->connection = @mysqli_connect(
- $dsn['hostspec'],
- $dsn['username'],
- $dsn['password'],
- $dsn['database'],
- $dsn['port'],
- $dsn['socket']
- );
- }
-
- @ini_set('track_errors', $ini);
-
- if (!$this->connection) {
- if (($err = @mysqli_connect_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']) {
- $this->_db = $dsn['database'];
- }
-
- return DB_OK;
- }
-
- // }}}
- // {{{ disconnect()
-
- /**
- * Disconnects from the database server
- *
- * @return bool TRUE on success, FALSE on failure
- */
- function disconnect()
- {
- $ret = @mysqli_close($this->connection);
- $this->connection = null;
- return $ret;
- }
-
- // }}}
- // {{{ simpleQuery()
-
- /**
- * Sends a query to the database server
- *
- * @param string the SQL query string
- *
- * @return mixed + a PHP result resrouce for successful SELECT queries
- * + the DB_OK constant for other successful queries
- * + a DB_Error object on failure
- */
- function simpleQuery($query)
- {
- $ismanip = $this->_checkManip($query);
- $this->last_query = $query;
- $query = $this->modifyQuery($query);
- if ($this->_db) {
- if (!@mysqli_select_db($this->connection, $this->_db)) {
- return $this->mysqliRaiseError(DB_ERROR_NODBSELECTED);
- }
- }
- if (!$this->autocommit && $ismanip) {
- if ($this->transaction_opcount == 0) {
- $result = @mysqli_query($this->connection, 'SET AUTOCOMMIT=0');
- $result = @mysqli_query($this->connection, 'BEGIN');
- if (!$result) {
- return $this->mysqliRaiseError();
- }
- }
- $this->transaction_opcount++;
- }
- $result = @mysqli_query($this->connection, $query);
- if (!$result) {
- return $this->mysqliRaiseError();
- }
- if (is_object($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 resource $result a valid sql result resource
- * @return false
- * @access public
- */
- function nextResult($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 (!@mysqli_data_seek($result, $rownum)) {
- return null;
- }
- }
- if ($fetchmode & DB_FETCHMODE_ASSOC) {
- $arr = @mysqli_fetch_array($result, MYSQLI_ASSOC);
- if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE && $arr) {
- $arr = array_change_key_case($arr, CASE_LOWER);
- }
- } else {
- $arr = @mysqli_fetch_row($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 is_resource($result) ? mysqli_free_result($result) : false;
- }
-
- // }}}
- // {{{ 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)
- {
- $cols = @mysqli_num_fields($result);
- if (!$cols) {
- return $this->mysqliRaiseError();
- }
- 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)
- {
- $rows = @mysqli_num_rows($result);
- if ($rows === null) {
- return $this->mysqliRaiseError();
- }
- 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 ($this->_db) {
- if (!@mysqli_select_db($this->connection, $this->_db)) {
- return $this->mysqliRaiseError(DB_ERROR_NODBSELECTED);
- }
- }
- $result = @mysqli_query($this->connection, 'COMMIT');
- $result = @mysqli_query($this->connection, 'SET AUTOCOMMIT=1');
- $this->transaction_opcount = 0;
- if (!$result) {
- return $this->mysqliRaiseError();
- }
- }
- return DB_OK;
- }
-
- // }}}
- // {{{ rollback()
-
- /**
- * Reverts the current transaction
- *
- * @return int DB_OK on success. A DB_Error object on failure.
- */
- function rollback()
- {
- if ($this->transaction_opcount > 0) {
- if ($this->_db) {
- if (!@mysqli_select_db($this->connection, $this->_db)) {
- return $this->mysqliRaiseError(DB_ERROR_NODBSELECTED);
- }
- }
- $result = @mysqli_query($this->connection, 'ROLLBACK');
- $result = @mysqli_query($this->connection, 'SET AUTOCOMMIT=1');
- $this->transaction_opcount = 0;
- if (!$result) {
- return $this->mysqliRaiseError();
- }
- }
- return DB_OK;
- }
-
- // }}}
- // {{{ affectedRows()
-
- /**
- * Determines the number of rows affected by a data maniuplation query
- *
- * 0 is returned for queries that don't manipulate data.
- *
- * @return int the number of rows. A DB_Error object on failure.
- */
- function affectedRows()
- {
- if ($this->_last_query_manip) {
- return @mysqli_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 $ondemand when true, the seqence is automatically
- * created if it does not exist
- *
- * @return int the next id number in the sequence.
- * A DB_Error object on failure.
- *
- * @see DB_common::nextID(), DB_common::getSequenceName(),
- * DB_mysqli::createSequence(), DB_mysqli::dropSequence()
- */
- function nextId($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
- $id = @mysqli_insert_id($this->connection);
- if ($id != 0) {
- return $id;
- }
-
- // EMPTY SEQ TABLE
- // Sequence table must be empty for some reason,
- // so fill it and return 1
- // 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) {
- return $this->mysqliRaiseError(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);
-
- // Since createSequence initializes the ID to be 1,
- // we do not need to retrieve the ID again (or we will get 2)
- if (DB::isError($result)) {
- return $this->raiseError($result);
- } else {
- // First ID of a newly created sequence is 1
- return 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);
- }
-
- /**
- * Creates a new sequence
- *
- * @param string $seq_name name of the new sequence
- *
- * @return int DB_OK on success. A DB_Error object on failure.
- *
- * @see DB_common::createSequence(), DB_common::getSequenceName(),
- * DB_mysqli::nextID(), DB_mysqli::dropSequence()
- */
- function createSequence($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
- return $this->query("INSERT INTO ${seqname} (id) VALUES (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->mysqliRaiseError(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
- * (WARNING: using names that require this is a REALLY BAD IDEA)
- *
- * WARNING: Older versions of 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_replace('`', '``', $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)
- {
- return @mysqli_real_escape_string($this->connection, $str);
- }
-
- // }}}
- // {{{ 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) || $this->_next_query_manip) {
- return $query . " LIMIT $count";
- } else {
- return $query . " LIMIT $from, $count";
- }
- }
-
- // }}}
- // {{{ mysqliRaiseError()
-
- /**
- * Produces a DB_Error object regarding the current problem
- *
- * @param int $errno if the error is being manually raised pass a
- * DB_ERROR* constant here. If this isn't passed
- * the error information gathered from the DBMS.
- *
- * @return object the DB_Error object
- *
- * @see DB_common::raiseError(),
- * DB_mysqli::errorNative(), DB_common::errorCode()
- */
- function mysqliRaiseError($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 = $this->errorCode(mysqli_errno($this->connection));
- }
- return $this->raiseError($errno, null, null, null,
- @mysqli_errno($this->connection) . ' ** ' .
- @mysqli_error($this->connection));
- }
-
- // }}}
- // {{{ errorNative()
-
- /**
- * Gets the DBMS' native error code produced by the last query
- *
- * @return int the DBMS' error code
- */
- function errorNative()
- {
- return @mysqli_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 $mode a valid tableInfo mode
- *
- * @return array an associative array with the information requested.
- * A DB_Error object on failure.
- *
- * @see DB_common::setOption()
- */
- function tableInfo($result, $mode = null)
- {
- if (is_string($result)) {
- // Fix for bug #11580.
- if ($this->_db) {
- if (!@mysqli_select_db($this->connection, $this->_db)) {
- return $this->mysqliRaiseError(DB_ERROR_NODBSELECTED);
- }
- }
-
- /*
- * Probably received a table name.
- * Create a result resource identifier.
- */
- $id = @mysqli_query($this->connection,
- "SELECT * FROM $result LIMIT 0");
- $got_string = true;
- } elseif (isset($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;
- $got_string = false;
- }
-
- if (!is_a($id, 'mysqli_result')) {
- return $this->mysqliRaiseError(DB_ERROR_NEED_MORE_DATA);
- }
-
- if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE) {
- $case_func = 'strtolower';
- } else {
- $case_func = 'strval';
- }
-
- $count = @mysqli_num_fields($id);
- $res = array();
-
- if ($mode) {
- $res['num_fields'] = $count;
- }
-
- for ($i = 0; $i < $count; $i++) {
- $tmp = @mysqli_fetch_field($id);
-
- $flags = '';
- foreach ($this->mysqli_flags as $const => $means) {
- if ($tmp->flags & $const) {
- $flags .= $means . ' ';
- }
- }
- if ($tmp->def) {
- $flags .= 'default_' . rawurlencode($tmp->def);
- }
- $flags = trim($flags);
-
- $res[$i] = array(
- 'table' => $case_func($tmp->table),
- 'name' => $case_func($tmp->name),
- 'type' => isset($this->mysqli_types[$tmp->type])
- ? $this->mysqli_types[$tmp->type]
- : 'unknown',
- // http://bugs.php.net/?id=36579
- 'len' => $tmp->length,
- 'flags' => $flags,
- );
-
- if ($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) {
- @mysqli_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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