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-<?php
-
-/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
-
-/**
- * The PEAR DB driver for PHP's msql extension
- * for interacting with Mini SQL databases
- *
- * PHP's mSQL extension did weird things with NULL values prior to PHP
- * 4.3.11 and 5.0.4. Make sure your version of PHP meets or exceeds
- * those versions.
- *
- * 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 msql extension
- * for interacting with Mini SQL databases
- *
- * These methods overload the ones declared in DB_common.
- *
- * PHP's mSQL extension did weird things with NULL values prior to PHP
- * 4.3.11 and 5.0.4. Make sure your version of PHP meets or exceeds
- * those versions.
- *
- * @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 not functional until Release 1.7.0
- */
-class DB_msql extends DB_common
-{
- // {{{ properties
-
- /**
- * The DB driver type (mysql, oci8, odbc, etc.)
- * @var string
- */
- var $phptype = 'msql';
-
- /**
- * The database syntax variant to be used (db2, access, etc.), if any
- * @var string
- */
- var $dbsyntax = 'msql';
-
- /**
- * 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' => 'emulate',
- 'new_link' => false,
- 'numrows' => true,
- 'pconnect' => true,
- 'prepare' => false,
- 'ssl' => false,
- 'transactions' => false,
- );
-
- /**
- * A mapping of native error codes to DB error codes
- * @var array
- */
- var $errorcode_map = array(
- );
-
- /**
- * The raw database connection created by PHP
- * @var resource
- */
- var $connection;
-
- /**
- * The DSN information for connecting to a database
- * @var array
- */
- var $dsn = array();
-
-
- /**
- * The query result resource created by PHP
- *
- * Used to make affectedRows() work. Only contains the result for
- * data manipulation queries. Contains false for other queries.
- *
- * @var resource
- * @access private
- */
- var $_result;
-
-
- // }}}
- // {{{ constructor
-
- /**
- * This constructor calls <kbd>$this->DB_common()</kbd>
- *
- * @return void
- */
- function DB_msql()
- {
- $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.
- *
- * Example of how to connect:
- * <code>
- * require_once 'DB.php';
- *
- * // $dsn = 'msql://hostname/dbname'; // use a TCP connection
- * $dsn = 'msql:///dbname'; // use a socket
- * $options = array(
- * 'portability' => DB_PORTABILITY_ALL,
- * );
- *
- * $db = DB::connect($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('msql')) {
- return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND);
- }
-
- $this->dsn = $dsn;
- if ($dsn['dbsyntax']) {
- $this->dbsyntax = $dsn['dbsyntax'];
- }
-
- $params = array();
- if ($dsn['hostspec']) {
- $params[] = $dsn['port']
- ? $dsn['hostspec'] . ',' . $dsn['port']
- : $dsn['hostspec'];
- }
-
- $connect_function = $persistent ? 'msql_pconnect' : 'msql_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 = @msql_error()) != '') {
- return $this->raiseError(DB_ERROR_CONNECT_FAILED,
- null, null, null,
- $err);
- } else {
- return $this->raiseError(DB_ERROR_CONNECT_FAILED,
- null, null, null,
- $php_errormsg);
- }
- }
-
- if (!@msql_select_db($dsn['database'], $this->connection)) {
- return $this->msqlRaiseError();
- }
- return DB_OK;
- }
-
- // }}}
- // {{{ disconnect()
-
- /**
- * Disconnects from the database server
- *
- * @return bool TRUE on success, FALSE on failure
- */
- function disconnect()
- {
- $ret = @msql_close($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)
- {
- $this->last_query = $query;
- $query = $this->modifyQuery($query);
- $result = @msql_query($query, $this->connection);
- if (!$result) {
- return $this->msqlRaiseError();
- }
- // Determine which queries that should return data, and which
- // should return an error code only.
- if ($this->_checkManip($query)) {
- $this->_result = $result;
- return DB_OK;
- } else {
- $this->_result = false;
- return $result;
- }
- }
-
-
- // }}}
- // {{{ nextResult()
-
- /**
- * Move the internal msql result pointer to the next available result
- *
- * @param a valid fbsql result resource
- *
- * @access public
- *
- * @return true if a result is available otherwise return false
- */
- function nextResult($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.
- *
- * PHP's mSQL extension did weird things with NULL values prior to PHP
- * 4.3.11 and 5.0.4. Make sure your version of PHP meets or exceeds
- * those versions.
- *
- * @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 (!@msql_data_seek($result, $rownum)) {
- return null;
- }
- }
- if ($fetchmode & DB_FETCHMODE_ASSOC) {
- $arr = @msql_fetch_array($result, MSQL_ASSOC);
- if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE && $arr) {
- $arr = array_change_key_case($arr, CASE_LOWER);
- }
- } else {
- $arr = @msql_fetch_row($result);
- }
- if (!$arr) {
- return null;
- }
- if ($this->options['portability'] & DB_PORTABILITY_RTRIM) {
- $this->_rtrimArrayValues($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($result) ? msql_free_result($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)
- {
- $cols = @msql_num_fields($result);
- if (!$cols) {
- return $this->msqlRaiseError();
- }
- 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)
- {
- $rows = @msql_num_rows($result);
- if ($rows === false) {
- return $this->msqlRaiseError();
- }
- return $rows;
- }
-
- // }}}
- // {{{ affected()
-
- /**
- * Determines the number of rows affected by a data maniuplation query
- *
- * 0 is returned for queries that don't manipulate data.
- *
- * @return int the number of rows. A DB_Error object on failure.
- */
- function affectedRows()
- {
- if (!$this->_result) {
- return 0;
- }
- return msql_affected_rows($this->_result);
- }
-
- // }}}
- // {{{ nextId()
-
- /**
- * Returns the next free id in a sequence
- *
- * @param string $seq_name name of the sequence
- * @param boolean $ondemand when true, the seqence is automatically
- * created if it does not exist
- *
- * @return int the next id number in the sequence.
- * A DB_Error object on failure.
- *
- * @see DB_common::nextID(), DB_common::getSequenceName(),
- * DB_msql::createSequence(), DB_msql::dropSequence()
- */
- function nextId($seq_name, $ondemand = true)
- {
- $seqname = $this->getSequenceName($seq_name);
- $repeat = false;
- do {
- $this->pushErrorHandling(PEAR_ERROR_RETURN);
- $result = $this->query("SELECT _seq FROM ${seqname}");
- $this->popErrorHandling();
- if ($ondemand && DB::isError($result) &&
- $result->getCode() == DB_ERROR_NOSUCHTABLE) {
- $repeat = true;
- $this->pushErrorHandling(PEAR_ERROR_RETURN);
- $result = $this->createSequence($seq_name);
- $this->popErrorHandling();
- if (DB::isError($result)) {
- return $this->raiseError($result);
- }
- } else {
- $repeat = false;
- }
- } while ($repeat);
- if (DB::isError($result)) {
- return $this->raiseError($result);
- }
- $arr = $result->fetchRow(DB_FETCHMODE_ORDERED);
- $result->free();
- return $arr[0];
- }
-
- // }}}
- // {{{ createSequence()
-
- /**
- * Creates a new sequence
- *
- * Also creates a new table to associate the sequence with. Uses
- * a separate table to ensure portability with other drivers.
- *
- * @param string $seq_name name of the new sequence
- *
- * @return int DB_OK on success. A DB_Error object on failure.
- *
- * @see DB_common::createSequence(), DB_common::getSequenceName(),
- * DB_msql::nextID(), DB_msql::dropSequence()
- */
- function createSequence($seq_name)
- {
- $seqname = $this->getSequenceName($seq_name);
- $res = $this->query('CREATE TABLE ' . $seqname
- . ' (id INTEGER NOT NULL)');
- if (DB::isError($res)) {
- return $res;
- }
- $res = $this->query("CREATE SEQUENCE ON ${seqname}");
- return $res;
- }
-
- // }}}
- // {{{ dropSequence()
-
- /**
- * Deletes a sequence
- *
- * @param string $seq_name name of the sequence to be deleted
- *
- * @return int DB_OK on success. A DB_Error object on failure.
- *
- * @see DB_common::dropSequence(), DB_common::getSequenceName(),
- * DB_msql::nextID(), DB_msql::createSequence()
- */
- function dropSequence($seq_name)
- {
- return $this->query('DROP TABLE ' . $this->getSequenceName($seq_name));
- }
-
- // }}}
- // {{{ quoteIdentifier()
-
- /**
- * mSQL does not support delimited identifiers
- *
- * @param string $str the identifier name to be quoted
- *
- * @return object a DB_Error object
- *
- * @see DB_common::quoteIdentifier()
- * @since Method available since Release 1.7.0
- */
- function quoteIdentifier($str)
- {
- return $this->raiseError(DB_ERROR_UNSUPPORTED);
- }
-
- // }}}
- // {{{ quoteFloat()
-
- /**
- * Formats a float value for use within a query in a locale-independent
- * manner.
- *
- * @param float the float value to be quoted.
- * @return string the quoted string.
- * @see DB_common::quoteSmart()
- * @since Method available since release 1.7.8.
- */
- function quoteFloat($float) {
- return $this->escapeSimple(str_replace(',', '.', strval(floatval($float))));
- }
-
- // }}}
- // {{{ escapeSimple()
-
- /**
- * Escapes a string according to the current DBMS's standards
- *
- * @param string $str the string to be escaped
- *
- * @return string the escaped string
- *
- * @see DB_common::quoteSmart()
- * @since Method available since Release 1.7.0
- */
- function escapeSimple($str)
- {
- return addslashes($str);
- }
-
- // }}}
- // {{{ msqlRaiseError()
-
- /**
- * Produces a DB_Error object regarding the current problem
- *
- * @param int $errno if the error is being manually raised pass a
- * DB_ERROR* constant here. If this isn't passed
- * the error information gathered from the DBMS.
- *
- * @return object the DB_Error object
- *
- * @see DB_common::raiseError(),
- * DB_msql::errorNative(), DB_msql::errorCode()
- */
- function msqlRaiseError($errno = null)
- {
- $native = $this->errorNative();
- if ($errno === null) {
- $errno = $this->errorCode($native);
- }
- return $this->raiseError($errno, null, null, null, $native);
- }
-
- // }}}
- // {{{ errorNative()
-
- /**
- * Gets the DBMS' native error message produced by the last query
- *
- * @return string the DBMS' error message
- */
- function errorNative()
- {
- return @msql_error();
- }
-
- // }}}
- // {{{ errorCode()
-
- /**
- * Determines PEAR::DB error code from the database's text error message
- *
- * @param string $errormsg the error message returned from the database
- *
- * @return integer the error number from a DB_ERROR* constant
- */
- function errorCode($errormsg)
- {
- static $error_regexps;
-
- // PHP 5.2+ prepends the function name to $php_errormsg, so we need
- // this hack to work around it, per bug #9599.
- $errormsg = preg_replace('/^msql[a-z_]+\(\): /', '', $errormsg);
-
- if (!isset($error_regexps)) {
- $error_regexps = array(
- '/^Access to database denied/i'
- => DB_ERROR_ACCESS_VIOLATION,
- '/^Bad index name/i'
- => DB_ERROR_ALREADY_EXISTS,
- '/^Bad order field/i'
- => DB_ERROR_SYNTAX,
- '/^Bad type for comparison/i'
- => DB_ERROR_SYNTAX,
- '/^Can\'t perform LIKE on/i'
- => DB_ERROR_SYNTAX,
- '/^Can\'t use TEXT fields in LIKE comparison/i'
- => DB_ERROR_SYNTAX,
- '/^Couldn\'t create temporary table/i'
- => DB_ERROR_CANNOT_CREATE,
- '/^Error creating table file/i'
- => DB_ERROR_CANNOT_CREATE,
- '/^Field .* cannot be null$/i'
- => DB_ERROR_CONSTRAINT_NOT_NULL,
- '/^Index (field|condition) .* cannot be null$/i'
- => DB_ERROR_SYNTAX,
- '/^Invalid date format/i'
- => DB_ERROR_INVALID_DATE,
- '/^Invalid time format/i'
- => DB_ERROR_INVALID,
- '/^Literal value for .* is wrong type$/i'
- => DB_ERROR_INVALID_NUMBER,
- '/^No Database Selected/i'
- => DB_ERROR_NODBSELECTED,
- '/^No value specified for field/i'
- => DB_ERROR_VALUE_COUNT_ON_ROW,
- '/^Non unique value for unique index/i'
- => DB_ERROR_CONSTRAINT,
- '/^Out of memory for temporary table/i'
- => DB_ERROR_CANNOT_CREATE,
- '/^Permission denied/i'
- => DB_ERROR_ACCESS_VIOLATION,
- '/^Reference to un-selected table/i'
- => DB_ERROR_SYNTAX,
- '/^syntax error/i'
- => DB_ERROR_SYNTAX,
- '/^Table .* exists$/i'
- => DB_ERROR_ALREADY_EXISTS,
- '/^Unknown database/i'
- => DB_ERROR_NOSUCHDB,
- '/^Unknown field/i'
- => DB_ERROR_NOSUCHFIELD,
- '/^Unknown (index|system variable)/i'
- => DB_ERROR_NOT_FOUND,
- '/^Unknown table/i'
- => DB_ERROR_NOSUCHTABLE,
- '/^Unqualified field/i'
- => DB_ERROR_SYNTAX,
- );
- }
-
- foreach ($error_regexps as $regexp => $code) {
- if (preg_match($regexp, $errormsg)) {
- return $code;
- }
- }
- return DB_ERROR;
- }
-
- // }}}
- // {{{ 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)) {
- /*
- * Probably received a table name.
- * Create a result resource identifier.
- */
- $id = @msql_query("SELECT * FROM $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 $this->raiseError(DB_ERROR_NEED_MORE_DATA);
- }
-
- if ($this->options['portability'] & DB_PORTABILITY_LOWERCASE) {
- $case_func = 'strtolower';
- } else {
- $case_func = 'strval';
- }
-
- $count = @msql_num_fields($id);
- $res = array();
-
- if ($mode) {
- $res['num_fields'] = $count;
- }
-
- for ($i = 0; $i < $count; $i++) {
- $tmp = @msql_fetch_field($id);
-
- $flags = '';
- if ($tmp->not_null) {
- $flags .= 'not_null ';
- }
- if ($tmp->unique) {
- $flags .= 'unique_key ';
- }
- $flags = trim($flags);
-
- $res[$i] = array(
- 'table' => $case_func($tmp->table),
- 'name' => $case_func($tmp->name),
- 'type' => $tmp->type,
- 'len' => msql_field_len($id, $i),
- '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) {
- @msql_free_result($id);
- }
- return $res;
- }
-
- // }}}
- // {{{ getSpecialQuery()
-
- /**
- * Obtain a list of a given type of objects
- *
- * @param string $type the kind of objects you want to retrieve
- *
- * @return array the array containing the list of objects requested
- *
- * @access protected
- * @see DB_common::getListOf()
- */
- function getSpecialQuery($type)
- {
- switch ($type) {
- case 'databases':
- $id = @msql_list_dbs($this->connection);
- break;
- case 'tables':
- $id = @msql_list_tables($this->dsn['database'],
- $this->connection);
- break;
- default:
- return null;
- }
- if (!$id) {
- return $this->msqlRaiseError();
- }
- $out = array();
- while ($row = @msql_fetch_row($id)) {
- $out[] = $row[0];
- }
- return $out;
- }
-
- // }}}
-
-}
-
-/*
- * Local variables:
- * tab-width: 4
- * c-basic-offset: 4
- * End:
- */
-
-?>
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