The mysqli class
(PHP 5, PHP 7, PHP 8)
Introduction
Represents a connection between PHP and a MySQL database.
Class synopsis
string
$hostname
= ini_get("mysqli.default_host"),string
$username
= ini_get("mysqli.default_user"),string
$password
= ini_get("mysqli.default_pw"),string
$database
= "",int
$port
= ini_get("mysqli.default_port"),string
$socket
= ini_get("mysqli.default_socket"))
string
$hostname
= ini_get("mysqli.default_host"),string
$username
= ini_get("mysqli.default_user"),string
$password
= ini_get("mysqli.default_pw"),string
$database
= "",int
$port
= ini_get("mysqli.default_port"),string
$socket
= ini_get("mysqli.default_socket")): void
?array
&$read
,?array
&$error
,array
&$reject
,int
$seconds
,int
$microseconds
= 0): int|false
string
$host
= ?,string
$username
= ?,string
$passwd
= ?,string
$dbname
= ?,int
$port
= ?,string
$socket
= ?,int
$flags
= ?): bool
?string
$key
,?string
$certificate
,?string
$ca_certificate
,?string
$ca_path
,?string
$cipher_algos
): bool
Table of Contents
- mysqli::$affected_rows — Gets the number of affected rows in a previous MySQL operation
- mysqli::autocommit — Turns on or off auto-committing database modifications
- mysqli::begin_transaction — Starts a transaction
- mysqli::change_user — Changes the user of the specified database connection
- mysqli::character_set_name — Returns the current character set of the database connection
- mysqli::close — Closes a previously opened database connection
- mysqli::commit — Commits the current transaction
- mysqli::$connect_errno — Returns the error code from last connect call
- mysqli::$connect_error — Returns a description of the last connection error
- mysqli::__construct — Open a new connection to the MySQL server
- mysqli::debug — Performs debugging operations
- mysqli::dump_debug_info — Dump debugging information into the log
- mysqli::$errno — Returns the error code for the most recent function call
- mysqli::$error_list — Returns a list of errors from the last command executed
- mysqli::$error — Returns a string description of the last error
- mysqli::$field_count — Returns the number of columns for the most recent query
- mysqli::get_charset — Returns a character set object
- mysqli::$client_info — Get MySQL client info
- mysqli::$client_version — Returns the MySQL client version as an integer
- mysqli::get_connection_stats — Returns statistics about the client connection
- mysqli::$host_info — Returns a string representing the type of connection used
- mysqli::$protocol_version — Returns the version of the MySQL protocol used
- mysqli::$server_info — Returns the version of the MySQL server
- mysqli::$server_version — Returns the version of the MySQL server as an integer
- mysqli::get_warnings — Get result of SHOW WARNINGS
- mysqli::$info — Retrieves information about the most recently executed query
- mysqli::init — Initializes MySQLi and returns an object for use with mysqli_real_connect()
- mysqli::$insert_id — Returns the value generated for an AUTO_INCREMENT column by the last query
- mysqli::kill — Asks the server to kill a MySQL thread
- mysqli::more_results — Check if there are any more query results from a multi query
- mysqli::multi_query — Performs one or more queries on the database
- mysqli::next_result — Prepare next result from multi_query
- mysqli::options — Set options
- mysqli::ping — Pings a server connection, or tries to reconnect if the connection has gone down
- mysqli::poll — Poll connections
- mysqli::prepare — Prepares an SQL statement for execution
- mysqli::query — Performs a query on the database
- mysqli::real_connect — Opens a connection to a mysql server
- mysqli::real_escape_string — Escapes special characters in a string for use in an SQL statement, taking into account the current charset of the connection
- mysqli::real_query — Execute an SQL query
- mysqli::reap_async_query — Get result from async query
- mysqli::refresh — Refreshes
- mysqli::release_savepoint — Removes the named savepoint from the set of savepoints of the current transaction
- mysqli::rollback — Rolls back current transaction
- mysqli::savepoint — Set a named transaction savepoint
- mysqli::select_db — Selects the default database for database queries
- mysqli::set_charset — Sets the client character set
- mysqli::$sqlstate — Returns the SQLSTATE error from previous MySQL operation
- mysqli::ssl_set — Used for establishing secure connections using SSL
- mysqli::stat — Gets the current system status
- mysqli::stmt_init — Initializes a statement and returns an object for use with mysqli_stmt_prepare
- mysqli::store_result — Transfers a result set from the last query
- mysqli::$thread_id — Returns the thread ID for the current connection
- mysqli::thread_safe — Returns whether thread safety is given or not
- mysqli::use_result — Initiate a result set retrieval
- mysqli::$warning_count — Returns the number of warnings from the last query for the given link