Source for file mssql.php
Documentation is available at mssql.php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
* The PEAR DB driver for PHP's mssql extension
* for interacting with Microsoft SQL Server databases
* 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.
* @author Sterling Hughes <sterling@php.net>
* @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: mssql.php,v 1.92 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_PEAR_PATH.
'DB/common.php';
* The methods PEAR DB uses to interact with PHP's mssql extension
* for interacting with Microsoft SQL Server databases
* These methods overload the ones declared in DB_common.
* DB's mssql driver is only for Microsfoft SQL Server databases.
* If you're connecting to a Sybase database, you MUST specify "sybase"
* as the "phptype" in the DSN.
* This class only works correctly if you have compiled PHP using
* --with-mssql=[dir_to_FreeTDS].
* @author Sterling Hughes <sterling@php.net>
* @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
* The DB driver type (mysql, oci8, odbc, etc.)
* The database syntax variant to be used (db2, access, etc.), if any
* 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
* A mapping of native error codes to DB error codes
// XXX Add here error codes ie: 'S100E' => DB_ERROR_SYNTAX
110 =>
DB_ERROR_VALUE_COUNT_ON_ROW,
155 =>
DB_ERROR_NOSUCHFIELD,
207 =>
DB_ERROR_NOSUCHFIELD,
208 =>
DB_ERROR_NOSUCHTABLE,
245 =>
DB_ERROR_INVALID_NUMBER,
321 =>
DB_ERROR_NOSUCHFIELD,
515 =>
DB_ERROR_CONSTRAINT_NOT_NULL,
547 =>
DB_ERROR_CONSTRAINT,
1913 =>
DB_ERROR_ALREADY_EXISTS,
2627 =>
DB_ERROR_CONSTRAINT,
2714 =>
DB_ERROR_ALREADY_EXISTS,
3607 =>
DB_ERROR_DIVZERO,
3701 =>
DB_ERROR_NOSUCHTABLE,
8134 =>
DB_ERROR_DIVZERO,
15253 =>
DB_ERROR_SYNTAX,
* The raw database connection created by PHP
* The DSN information for connecting to a database
* Should data manipulation queries be committed automatically?
* 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 $transaction_opcount =
0;
* The database specified in the DSN
* It's a fix to allow calls to different databases in the same script.
* This constructor calls <kbd>$this->DB_common()</kbd>
* Connect to the database server, log in and open the database
* Don't call this method directly. Use DB::connect() instead.
* @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)
$dsn['hostspec'] ?
$dsn['hostspec'] :
'localhost',
$dsn['username'] ?
$dsn['username'] :
null,
$dsn['password'] ?
$dsn['password'] :
null,
$params[0] .=
((substr(PHP_OS, 0, 3) ==
'WIN') ?
',' :
':')
$connect_function =
$persistent ?
'mssql_pconnect' :
'mssql_connect';
@mssql_get_last_message());
if (!@mssql_select_db($dsn['database'], $this->connection)) {
@mssql_get_last_message());
$this->_db =
$dsn['database'];
* Disconnects from the database server
* @return bool TRUE on success, FALSE on failure
* Sends a query to the database server
* @param string the SQL query string
* @return mixed + a PHP result resrouce for successful SELECT queries
* + the DB_OK constant for other successful queries
* + a DB_Error object on failure
if (!@mssql_select_db($this->_db, $this->connection)) {
if (!$this->autocommit &&
$ismanip) {
if ($this->transaction_opcount ==
0) {
$result =
@mssql_query('BEGIN TRAN', $this->connection);
$this->transaction_opcount++
;
$result =
@mssql_query($query, $this->connection);
// Determine which queries that should return data, and which
// should return an error code only.
return $ismanip ?
DB_OK :
$result;
* Move the internal mssql result pointer to the next available result
* @param a valid fbsql result resource
* @return true if a result is available otherwise return false
return @mssql_next_result($result);
* 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 $rownum the row number to fetch (0 = first row)
* @return mixed DB_OK on success, NULL when the end of a result set is
* @see DB_result::fetchInto()
function fetchInto($result, &$arr, $fetchmode, $rownum =
null)
if (!@mssql_data_seek($result, $rownum)) {
$arr =
@mssql_fetch_assoc($result);
$arr =
@mssql_fetch_row($result);
* 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 $result is invalid
return is_resource($result) ?
mssql_free_result($result) :
false;
* 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()
$cols =
@mssql_num_fields($result);
* 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()
$rows =
@mssql_num_rows($result);
* 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.
// XXX if $this->transaction_opcount > 0, we should probably
$this->autocommit =
$onoff ?
true :
false;
* Commits the current transaction
* @return int DB_OK on success. A DB_Error object on failure.
if ($this->transaction_opcount >
0) {
if (!@mssql_select_db($this->_db, $this->connection)) {
$result =
@mssql_query('COMMIT TRAN', $this->connection);
$this->transaction_opcount =
0;
* Reverts the current transaction
* @return int DB_OK on success. A DB_Error object on failure.
if ($this->transaction_opcount >
0) {
if (!@mssql_select_db($this->_db, $this->connection)) {
$result =
@mssql_query('ROLLBACK TRAN', $this->connection);
$this->transaction_opcount =
0;
* 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.
$res =
@mssql_query('select @@rowcount', $this->connection);
$ar =
@mssql_fetch_row($res);
@mssql_free_result($res);
* Returns the next free id in a sequence
* @param string $seq_name name of the sequence
* @param boolean $ondemand when true, the seqence is automatically
* created if it does not exist
* @return int the next id number in the sequence.
* A DB_Error object on failure.
* @see DB_common::nextID(), DB_common::getSequenceName(),
* DB_mssql::createSequence(), DB_mssql::dropSequence()
function nextId($seq_name, $ondemand =
true)
if (!@mssql_select_db($this->_db, $this->connection)) {
$result =
$this->query("INSERT INTO $seqname (vapor) VALUES (0)");
$result =
$this->query("SELECT IDENT_CURRENT('$seqname')");
/* Fallback code for MS SQL Server 7.0, which doesn't have
* IDENT_CURRENT. This is *not* safe for concurrent
* requests, and really, if you're using it, you're in a
* world of hurt. Nevertheless, it's here to ensure BC. See
* bug #181 for the gory details.*/
$result =
$this->query("SELECT @@IDENTITY FROM $seqname");
* @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_mssql::nextID(), DB_mssql::dropSequence()
return $this->query('CREATE TABLE '
.
' ([id] [int] IDENTITY (1, 1) NOT NULL,'
.
' [vapor] [int] NULL)');
* @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_mssql::nextID(), DB_mssql::createSequence()
* Quotes a string so it can be safely used as a table or column name
* @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
* 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_mssql::errorNative(), DB_mssql::errorCode()
$message =
@mssql_get_last_message();
null, null, null, "$code - $message");
* Gets the DBMS' native error code produced by the last query
* @return int the DBMS' error code
$res =
@mssql_query('select @@ERROR as ErrorCode', $this->connection);
$row =
@mssql_fetch_row($res);
* Determines PEAR::DB error code from mssql's native codes.
* If <var>$nativecode</var> isn't known yet, it will be looked up.
* @param mixed $nativecode mssql error code, if known
* @return integer an error number from a DB error constant
function errorCode($nativecode =
null, $msg =
'')
* Returns information about a table or a result set
* NOTE: only supports 'table' and 'flags' if <var>$result</var>
* @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
* @param int $mode a valid tableInfo mode
* @return array an associative array with the information requested.
* A DB_Error object on failure.
* @see DB_common::tableInfo()
* Probably received a table name.
* Create a result resource identifier.
if (!@mssql_select_db($this->_db, $this->connection)) {
$id =
@mssql_query("SELECT * FROM $result WHERE 1=0",
} elseif (isset
($result->result)) {
* Probably received a result object.
* Extract the result resource identifier.
* Probably received a result resource identifier.
* Deprecated. Here for compatibility only.
$case_func =
'strtolower';
$count =
@mssql_num_fields($id);
$res['num_fields'] =
$count;
for ($i =
0; $i <
$count; $i++
) {
$flags =
$this->_mssql_field_flags($result,
@mssql_field_name($id, $i));
'table' =>
$got_string ?
$case_func($result) :
'',
'name' =>
$case_func(@mssql_field_name($id, $i)),
'type' =>
@mssql_field_type($id, $i),
'len' =>
@mssql_field_length($id, $i),
$res['order'][$res[$i]['name']] =
$i;
$res['ordertable'][$res[$i]['table']][$res[$i]['name']] =
$i;
// free the result only if we were called on a table
// {{{ _mssql_field_flags()
* Supports "not_null", "primary_key",
* "auto_increment" (mssql identity), "timestamp" (mssql timestamp),
* "unique_key" (mssql unique index, unique check or primary_key) and
* "multiple_key" (multikey index)
* mssql timestamp is NOT similar to the mysql timestamp so this is maybe
* not useful at all - is the behaviour of mysql_field_flags that primary
* keys are alway unique? is the interpretation of multiple_key correct?
* @param string $table the table name
* @param string $column the field name
* @return string the flags
* @author Joern Barthel <j_barthel@web.de>
function _mssql_field_flags($table, $column)
static $tableName =
null;
if ($table !=
$tableName) {
// get unique and primary keys
$res =
$this->getAll("EXEC SP_HELPINDEX $table", DB_FETCHMODE_ASSOC);
$keys =
explode(', ', $val['index_keys']);
foreach ($keys as $key) {
$this->_add_flag($flags[$key], 'multiple_key');
if (strpos($val['index_description'], 'primary key')) {
foreach ($keys as $key) {
$this->_add_flag($flags[$key], 'primary_key');
} elseif (strpos($val['index_description'], 'unique')) {
foreach ($keys as $key) {
$this->_add_flag($flags[$key], 'unique_key');
// get auto_increment, not_null and timestamp
if ($val['nullable'] ==
'0') {
$this->_add_flag($flags[$val['column_name']], 'not_null');
if (strpos($val['type_name'], 'identity')) {
$this->_add_flag($flags[$val['column_name']], 'auto_increment');
if (strpos($val['type_name'], 'timestamp')) {
$this->_add_flag($flags[$val['column_name']], 'timestamp');
if (array_key_exists($column, $flags)) {
return(implode(' ', $flags[$column]));
* Adds a string to the flags array if the flag is not yet in there
* - if there is no flag present the array is created
* @param array &$array the reference to the flag-array
* @param string $value the flag value
* @author Joern Barthel <j_barthel@web.de>
function _add_flag(&$array, $value)
* 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
* @see DB_common::getListOf()
return "SELECT name FROM sysobjects WHERE type = 'U'"
return "SELECT name FROM sysobjects WHERE type = 'V'";
Documentation generated on Wed, 09 Feb 2011 09:02:03 +0700 by phpDocumentor 1.4.2