Php and database functionality
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This document provides an overview of connecting to and interacting with databases in PHP using various PHP extensions and frameworks. It discusses connection strategies for MySQL, MSSQL, and IBM DB2 using mysql_connect, mysqli, PDO, and framework-specific methods. It also covers performing common database operations like prepared statements, stored procedures, and functions for interacting with results.
![CODE IGNITER DATABASE CONFIGURATION
ď application/config/database.php
ď $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;
ď Reference:
ď http://ellislab.com/codeigniter/user-guide/database/configuration.html](https://image.slidesharecdn.com/phpanddatabasefunctionality-161009015036/85/Php-and-database-functionality-15-320.jpg)
Php and database functionality
- 1. PHP, PHP FRAMEWORKS AND DATABASE Sayed Ahmed Computer Engineering, BUET, Bangladesh MSC, Computer Science, U of Manitoba, Canada http://www.JustEtc.net http://sayed.justetc.net [email protected]
- 2. TOPICS ď Connection strategies ď Configuration for connection in different frameworks ď PHP and DB2, MSSQL Server ď Common database oriented operations ď Reference to DB oriented functions/classes
- 3. CONNECTION ď mysql_connect ď mysqli_connect ď PDO ď PDO_ODBC ď Connection from Frameworks ď Code Igniter â configure for db connection ď CakePHP - configure for db connection ď Zend - configure for db connection
- 4. PDO VS MYSQLI ď Overall, PDO is a better choice than mysqli ď However, if performance is the only issue that you care, and ď mysql will be the backend database all the time, ď you can use mysqli ď Reference: ď http://net.tutsplus.com/tutorials/php/pdo-vs- mysqli-which-should-you-use/
- 5. MYSQL_CONNECT ď mysql_connect ď Opens a connection to a MySQL Server ď Deprecated as of PHP 5.5.0, and will be removed in the future. ď Instead use MySQLi or PDO_MySQL ď mysql_connect examples
- 6. MYSQL_CONNECT EXAMPLES USING PORTS
- 7. MYSQL_CONNECT USING PATH TO SOCKET
- 8. MYSQLI_CONNECT â ALIAS OF MYSQLI::__CONSTRUCT()
- 11. OBJECT ORIENTED STYLE CONNECTION WITH MYSQLI
- 12. DATABASE CONNECTION WITH PDO
- 13. PDO CONNECTION WHEN PARAMETERS IN A FILE
- 14. PDO USING PHP.INI CONFIGURATIONS
- 15. CODE IGNITER DATABASE CONFIGURATION ď application/config/database.php ď $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; ď Reference: ď http://ellislab.com/codeigniter/user-guide/database/configuration.html
- 16. CAKEPHP AND MYSQL ď A copy of CakePHPâs database configuration file is found in ď /app/Config/database.php.default ď Make a copy of this file in the same directory, but name it ď database.php ď Change database.php as follows
- 18. ZEND AND DATABASE CONFIGURATION ď Zend_Config_Ini enables developers to store configuration data in a familiar INI format
- 19. PDO AND PREPARED STATEMENTS
- 20. PDO FETCH AND PREPARED STMT
- 21. PDO AND STORED PROCEDURE (OUT PARAM)
- 22. PDO STRD PROC WITH IN/OUT PARAMS
- 23. MYSQLI AND STORED PROCEDURE
- 24. MYSQLI FETCHING RESULTS FROM STORED PROCEDURES
- 25. PHP FUNCTIONS FOR SQL SERVER ď The name of the functions may closely resemble the functionality. ď # 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
- 26. PHP FUNCTIONS FOR SQL SERVER ď # 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
- 27. PHP AND IBM DB2 ď 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.
- 28. PHP AND SQL SERVER STORED PROCEDURE
- 29. PHP AND SQL SERVER STORED PROCEDURE
- 33. MYSQLI â THE MYSQLI CLASS ď mysqli::$affected_rows â Gets the number of affected rows in a previous MySQL operation ď mysqli::autocommit â Turns on or off auto-committing database modifications ď mysqli::begin_transaction â Starts a transaction ď mysqli::change_user â Changes the user of the specified database connection ď mysqli::character_set_name â Returns the default character set for the database connection ď mysqli::$client_info â Get MySQL client info ď mysqli::$client_version â Returns the MySQL client version as a stringmysqli::close â Closes a previously opened database connection
- 34. MYSQLI â THE MYSQLI CLASS ď mysqli::commit â Commits the current transaction ď mysqli::$connect_errno â Returns the error code from last connect call ď mysqli::$connect_error â Returns a string description of the last connect error ď mysqli::__construct â Open a new connection to the MySQL server ď mysqli::debug â Performs debugging operations ď mysqli::dump_debug_info â Dump debugging information into the log ď mysqli::$errno â Returns the error code for the most recent function call
- 35. MYSQLI â THE MYSQLI CLASS ď mysqli::$error_list â Returns a list of errors from the last command executed ď mysqli::$error â Returns a string description of the last error ď mysqli::$field_count â Returns the number of columns for the most recent query ď mysqli::get_charset â Returns a character set objectmysqli::get_client_info â Get MySQL client info ď mysqli_get_client_stats â Returns client per-process statistics ď mysqli_get_client_version â Returns the MySQL client version as an integer ď mysqli::get_connection_stats â Returns statistics about the client connection ď mysqli::$host_info â Returns a string representing the type of connection used ď mysqli::$protocol_version â Returns the version of the MySQL protocol used ď mysqli::$server_info â Returns the version of the MySQL server ď mysqli::$server_version â Returns the version of the MySQL server as an integer ď mysqli::get_warnings â Get result of SHOW WARNINGS
- 36. MYSQLI â THE MYSQLI CLASS ď mysqli::$info â Retrieves information about the most recently executed querymysqli::init â Initializes MySQLi and returns a resource for use with mysqli_real_connect()mysqli::$insert_id â Returns the auto generated id used in the last querymysqli::kill â Asks the server to kill a MySQL threadmysqli::more_results â Check if there are any more query results from a multi querymysqli::multi_query â Performs a query on the databasemysqli::next_result â Prepare next result from multi_querymysqli::options â Set optionsmysqli::ping â Pings a server connection, or tries to reconnect if the connection has gone downmysqli::poll â Poll connectionsmysqli::prepare â Prepare an SQL statement for executionmysqli::query â Performs a query on the databasemysqli::real_connect â Opens a connection to a mysql servermysqli::real_escape_string â Escapes special characters in a string for use in an SQL statement, taking into account the current charset of the connectionmysqli::real_query â Execute an SQL query
- 37. MYSQLI_STMT â THE MYSQLI_STMT CLASS ď mysqli_stmt::$affected_rows â Returns the total number of rows changed, deleted, or inserted by the last executed statementmysqli_stmt::attr_get â Used to get the current value of a statement attributemysqli_stmt::attr_set â Used to modify the behavior of a prepared statementmysqli_stmt::bind_param â Binds variables to a prepared statement as parametersmysqli_stmt::bind_result â Binds variables to a prepared statement for result storagemysqli_stmt::close â Closes a prepared statementmysqli_stmt::data_seek â Seeks to an arbitrary row in statement result setmysqli_stmt::$errno â Returns the error code for the most recent statement callmysqli_stmt::$error_list â Returns a list of errors from the last statement executed
- 38. MYSQLI_RESULT â THE MYSQLI_RESULT CLASS ď mysqli_result::$current_field â Get current field offset of a result pointermysqli_result::data_seek â Adjusts the result pointer to an arbitrary row in the resultmysqli_result::fetch_all â Fetches all result rows as an associative array, a numeric array, or bothmysqli_result::fetch_array â Fetch a result row as an associative, a numeric array, or bothmysqli_result::fetch_assoc â Fetch a result row as an associative arraymysqli_result::fetch_field_direct â Fetch meta-data for a single fieldmysqli_result::fetch_field â Returns the next field in the result setmysqli_result::fetch_fields â Returns an array of objects representing the fields in a result setmysqli_result::fetch_object â Returns the current row of a result set as an objectmysqli_result::fetch_row â Get a result row as an enumerated array
- 39. MYSQLI_DRIVER, MYSQLI_WARNING ď mysqli_driver â The mysqli_driver classmysqli_driver::embedded_server_end â Stop embedded server ď mysqli_driver::embedded_server_start â Initialize and start embedded server ď mysqli_driver::$report_mode â Enables or disables internal report functions ď mysqli_warning â The mysqli_warning classmysqli_warning::__construct â The __construct purpose ď mysqli_warning::next â The next purpose ď mysqli_sql_exception â The mysqli_sql_exception class
- 40. PDO â THE PDO CLASS ď PDO::beginTransaction â Initiates a transactionPDO::commit â Commits a transactionPDO::__construct â Creates a PDO instance representing a connection to a databasePDO::errorCode â Fetch the SQLSTATE associated with the last operation on the database handlePDO::errorInfo â Fetch extended error information associated with the last operation on the database handlePDO::exec â Execute an SQL statement and return the number of affected rowsPDO::getAttribute â Retrieve a database connection attribute
- 41. PDOSTATEMENT â THE PDOSTATEMENT CLASS ď PDOStatement::bindColumn â Bind a column to a PHP variablePDOStatement::bindParam â Binds a parameter to the specified variable namePDOStatement::bindValue â Binds a value to a parameterPDOStatement::closeCursor â Closes the cursor, enabling the statement to be executed again.PDOStatement::columnCount â Returns the number of columns in the result setPDOStatement::debugDumpParams â Dump an SQL prepared commandPDOStatement::errorCode â Fetch the SQLSTATE associated with the last operation on the statement handlePDOStatement::errorInfo â Fetch extended error information associated with the last operation on the statement handle
- 42. PDOEXCEPTION, MISC ď PDOException â The PDOException class ď PDO DriversCUBRID (PDO) â CUBRID Functions (PDO_CUBRID) ď MS SQL Server (PDO) â Microsoft SQL Server and Sybase Functions (PDO_DBLIB) ď Firebird/Interbase (PDO) â Firebird/Interbase Functions (PDO_FIREBIRD) ď IBM (PDO) â IBM Functions (PDO_IBM)