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Diffstat (limited to 'extlib/DB/mysqli.php')
| -rw-r--r-- | extlib/DB/mysqli.php | 1092 |
1 files changed, 1092 insertions, 0 deletions
diff --git a/extlib/DB/mysqli.php b/extlib/DB/mysqli.php new file mode 100644 index 000000000..c6941b170 --- /dev/null +++ b/extlib/DB/mysqli.php @@ -0,0 +1,1092 @@ +<?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: mysqli.php,v 1.82 2007/09/21 13:40:41 aharvey Exp $ + * @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: 1.7.14RC1 + * @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: + */ + +?> |