Sayed Ahmed Computer Engineering, BUET, Bangladesh MSC, Computer Science, U of Manitoba, Canada

 Connection strategies  Configuration for connection in different frameworks  PHP and DB2, MSSQL Server  Common database oriented operations  Reference to DB oriented functions/classes

 mysql_connect  mysqli_connect  PDO  PDO_ODBC  Connection from Frameworks  Code Igniter – configure for db connection  CakePHP - configure for db connection  Zend - configure for db connection

 mysql_connect  Opens a connection to a MySQL Server  Deprecated as of PHP 5.5.0, and will be removed in the future.  Instead use MySQLi or PDO_MySQLMySQLiPDO_MySQL  mysql_connect examples

 application/config/database.php  $db['default']['hostname'] = "localhost"; $db['default']['username'] = "root"; $db['default']['password'] = ""; $db['default']['database'] = "database_name"; $db['default']['dbdriver'] = "mysql"; $db['default']['dbprefix'] = ""; $db['default']['pconnect'] = TRUE; $db['default']['db_debug'] = FALSE; $db['default']['cache_on'] = FALSE; $db['default']['cachedir'] = ""; $db['default']['char_set'] = "utf8"; $db['default']['dbcollat'] = "utf8_general_ci"; $db['default']['swap_pre'] = ""; $db['default']['autoinit'] = TRUE; $db['default']['stricton'] = FALSE;  Reference: 

 A copy of CakePHP’s database configuration file is found in  /app/Config/database.php.default  Make a copy of this file in the same directory, but name it  database.php  Change database.php as follows

 Zend_Config_Ini enables developers to store configuration data in a familiar INI format

 The name of the functions may closely resemble the functionality.  # mssql_ bind # mssql_ close # mssql_ connect # mssql_ data_ seek # mssql_ execute # mssql_ fetch_ array # mssql_ fetch_ assoc # mssql_ fetch_ batch # mssql_ fetch_ field # mssql_ fetch_ object # mssql_ fetch_ row # mssql_ field_ length # mssql_ field_ name # mssql_ field_ seek # mssql_ field_ type # mssql_ free_ result # mssql_ free_ statement

 # mssql_ get_ last_ message # mssql_ guid_ string # mssql_ init # mssql_ min_ error_ severity # mssql_ min_ message_ severity # mssql_ next_ result # mssql_ num_ fields # mssql_ num_ rows # mssql_ pconnect # mssql_ query # mssql_ result # mssql_ rows_ affected # mssql_ select_ db

 PHP has concepts like PDO and PDO_ODBC, and generic odbc features that will allow you to connect to and work with DB-2 databases. Generic odbc is the general/procedural way to connect to. PDO and PDO_ODBC are object oriented ways. PDO works with native IBM drivers. PDO_ODBC uses odbc connections to the DB2. For PHP you need to install drivers to support DB2. I worked with PDO_ODBC to connect to DB-2 databases in IBM iSeries servers. You need to install odbc db2 drivers for iseries servers. Then in /etc/odbcinst.ini file you need to mention driver specifications and in /etc/odbc.ini, you need to mention the odbc dsn name, database name, and some other parameters to connect to the database. Though, you may also supply some parameters in the PDO_ODBC connect method.iSeries database name

 mysqli::$affected_rows — Gets the number of affected rows in a previous MySQL operation mysqli::$affected_rows  mysqli::autocommit — Turns on or off auto-committing database modifications mysqli::autocommit  mysqli::begin_transaction — Starts a transaction mysqli::begin_transaction  mysqli::change_user — Changes the user of the specified database connection mysqli::change_user  mysqli::character_set_name — Returns the default character set for the database connection mysqli::character_set_name  mysqli::$client_info — Get MySQL client info mysqli::$client_info  mysqli::$client_version — Returns the MySQL client version as a stringmysqli::close — Closes a previously opened database connection mysqli::$client_versionmysqli::close

 mysqli::commit — Commits the current transaction mysqli::commit  mysqli::$connect_errno — Returns the error code from last connect call mysqli::$connect_errno  mysqli::$connect_error — Returns a string description of the last connect error mysqli::$connect_error  mysqli::__construct — Open a new connection to the MySQL server mysqli::__construct  mysqli::debug — Performs debugging operations mysqli::debug  mysqli::dump_debug_info — Dump debugging information into the log mysqli::dump_debug_info  mysqli::$errno — Returns the error code for the most recent function call mysqli::$errno

 mysqli::$error_list — Returns a list of errors from the last command executed mysqli::$error_list  mysqli::$error — Returns a string description of the last error mysqli::$error  mysqli::$field_count — Returns the number of columns for the most recent query mysqli::$field_count  mysqli::get_charset — Returns a character set objectmysqli::get_client_info — Get MySQL client info mysqli::get_charsetmysqli::get_client_info  mysqli_get_client_stats — Returns client per-process statistics mysqli_get_client_stats  mysqli_get_client_version — Returns the MySQL client version as an integer mysqli_get_client_version  mysqli::get_connection_stats — Returns statistics about the client connection mysqli::get_connection_stats  mysqli::$host_info — Returns a string representing the type of connection used mysqli::$host_info  mysqli::$protocol_version — Returns the version of the MySQL protocol used mysqli::$protocol_version  mysqli::$server_info — Returns the version of the MySQL server mysqli::$server_info  mysqli::$server_version — Returns the version of the MySQL server as an integer mysqli::$server_version  mysqli::get_warnings — Get result of SHOW WARNINGS mysqli::get_warnings

 mysqli::$info — Retrieves information about the most recently executed querymysqli::init — Initializes MySQLi and returns a resource for use with mysqli_real_connect()mysqli::$insert_id — Returns the auto generated id used in the last querymysqli::kill — Asks the server to kill a MySQL threadmysqli::more_results — Check if there are any more query results from a multi querymysqli::multi_query — Performs a query on the databasemysqli::next_result — Prepare next result from multi_querymysqli::options — Set optionsmysqli::ping — Pings a server connection, or tries to reconnect if the connection has gone downmysqli::poll — Poll connectionsmysqli::prepare — Prepare an SQL statement for executionmysqli::query — Performs a query on the databasemysqli::real_connect — Opens a connection to a mysql servermysqli::real_escape_string — Escapes special characters in a string for use in an SQL statement, taking into account the current charset of the connectionmysqli::real_query — Execute an SQL query mysqli::$infomysqli::initmysqli::$insert_idmysqli::killmysqli::more_resultsmysqli::multi_querymysqli::next_resultmysqli::optionsmysqli::pingmysqli::pollmysqli::preparemysqli::querymysqli::real_connectmysqli::real_escape_stringmysqli::real_query

 mysqli_stmt::$affected_rows — Returns the total number of rows changed, deleted, or inserted by the last executed statementmysqli_stmt::attr_get — Used to get the current value of a statement attributemysqli_stmt::attr_set — Used to modify the behavior of a prepared statementmysqli_stmt::bind_param — Binds variables to a prepared statement as parametersmysqli_stmt::bind_result — Binds variables to a prepared statement for result storagemysqli_stmt::close — Closes a prepared statementmysqli_stmt::data_seek — Seeks to an arbitrary row in statement result setmysqli_stmt::$errno — Returns the error code for the most recent statement callmysqli_stmt::$error_list — Returns a list of errors from the last statement executed mysqli_stmt::$affected_rowsmysqli_stmt::attr_getmysqli_stmt::attr_setmysqli_stmt::bind_parammysqli_stmt::bind_resultmysqli_stmt::closemysqli_stmt::data_seekmysqli_stmt::$errnomysqli_stmt::$error_list

 mysqli_result::$current_field — Get current field offset of a result pointermysqli_result::data_seek — Adjusts the result pointer to an arbitrary row in the resultmysqli_result::fetch_all — Fetches all result rows as an associative array, a numeric array, or bothmysqli_result::fetch_array — Fetch a result row as an associative, a numeric array, or bothmysqli_result::fetch_assoc — Fetch a result row as an associative arraymysqli_result::fetch_field_direct — Fetch meta-data for a single fieldmysqli_result::fetch_field — Returns the next field in the result setmysqli_result::fetch_fields — Returns an array of objects representing the fields in a result setmysqli_result::fetch_object — Returns the current row of a result set as an objectmysqli_result::fetch_row — Get a result row as an enumerated array mysqli_result::$current_fieldmysqli_result::data_seekmysqli_result::fetch_allmysqli_result::fetch_arraymysqli_result::fetch_assocmysqli_result::fetch_field_directmysqli_result::fetch_fieldmysqli_result::fetch_fieldsmysqli_result::fetch_objectmysqli_result::fetch_row

 mysqli_driver — The mysqli_driver classmysqli_driver::embedded_server_end — Stop embedded server mysqli_drivermysqli_driver::embedded_server_end  mysqli_driver::embedded_server_start — Initialize and start embedded server mysqli_driver::embedded_server_start  mysqli_driver::$report_mode — Enables or disables internal report functions mysqli_driver::$report_mode  mysqli_warning — The mysqli_warning classmysqli_warning::__construct — The __construct purpose mysqli_warningmysqli_warning::__construct  mysqli_warning::next — The next purpose mysqli_warning::next  mysqli_sql_exception — The mysqli_sql_exception class mysqli_sql_exception

 PDO::beginTransaction — Initiates a transactionPDO::commit — Commits a transactionPDO::__construct — Creates a PDO instance representing a connection to a databasePDO::errorCode — Fetch the SQLSTATE associated with the last operation on the database handlePDO::errorInfo — Fetch extended error information associated with the last operation on the database handlePDO::exec — Execute an SQL statement and return the number of affected rowsPDO::getAttribute — Retrieve a database connection attribute PDO::beginTransactionPDO::commitPDO::__constructPDO::errorCodePDO::errorInfoPDO::execPDO::getAttribute

 PDOStatement::bindColumn — Bind a column to a PHP variablePDOStatement::bindParam — Binds a parameter to the specified variable namePDOStatement::bindValue — Binds a value to a parameterPDOStatement::closeCursor — Closes the cursor, enabling the statement to be executed again.PDOStatement::columnCount — Returns the number of columns in the result setPDOStatement::debugDumpParams — Dump an SQL prepared commandPDOStatement::errorCode — Fetch the SQLSTATE associated with the last operation on the statement handlePDOStatement::errorInfo — Fetch extended error information associated with the last operation on the statement handle PDOStatement::bindColumnPDOStatement::bindParamPDOStatement::bindValuePDOStatement::closeCursorPDOStatement::columnCountPDOStatement::debugDumpParamsPDOStatement::errorCodePDOStatement::errorInfo

 PDOException — The PDOException class PDOException  PDO DriversCUBRID (PDO) — CUBRID Functions (PDO_CUBRID) PDO DriversCUBRID (PDO)  MS SQL Server (PDO) — Microsoft SQL Server and Sybase Functions (PDO_DBLIB) MS SQL Server (PDO)  Firebird/Interbase (PDO) — Firebird/Interbase Functions (PDO_FIREBIRD) Firebird/Interbase (PDO)  IBM (PDO) — IBM Functions (PDO_IBM) IBM (PDO)