The mysqli class
Introduction
(PHP 5, PHP 7, PHP 8)
Represents a connection between PHP and a MySQL database.
Class synopsis
class mysqli {
/* Properties */
/* Methods */
public
__construct(
string
string
string
string
int
string
)
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")
)
public autocommit(bool $enable): bool
public begin_transaction(int $flags = 0, ?string $name = null): bool
public change_user(string $username, string $password, ?string $database): bool
public character_set_name(): string
public close(): bool
public commit(int $flags = 0, ?string $name = null): bool
public connect( 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
public debug(string $options): bool
public dump_debug_info(): bool
public get_charset(): ?object
public get_client_info(): string
public get_connection_stats(): array
public get_server_info(): string
public get_warnings(): mysqli_warning|false
public kill(int $process_id): bool
public more_results(): bool
public multi_query(string $query): bool
public next_result(): bool
public options(int $option, string|int $value): bool
public ping(): bool
public static poll( ?array &$read, ?array &$error, array &$reject, int $seconds, int $microseconds = 0 ): int|false
public prepare(string $query): mysqli_stmt|false
public query(string $query, int $result_mode = MYSQLI_STORE_RESULT): mysqli_result|bool
public real_connect( string $host = ?, string $username = ?, string $passwd = ?, string $dbname = ?, int $port = ?, string $socket = ?, int $flags = ? ): bool
public real_escape_string(string $string): string
public real_query(string $query): bool
public reap_async_query(): mysqli_result|bool
public refresh(int $flags): bool
public release_savepoint(string $name): bool
public rollback(int $flags = 0, ?string $name = null): bool
public savepoint(string $name): bool
public select_db(string $database): bool
public set_charset(string $charset): bool
public ssl_set( ?string $key, ?string $certificate, ?string $ca_certificate, ?string $ca_path, ?string $cipher_algos ): bool
public stat(): string|false
public stmt_init(): mysqli_stmt|false
public store_result(int $mode = 0): mysqli_result|false
public thread_safe(): bool
public use_result(): mysqli_result|false}
Table of Contents
- mysqli::$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
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Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/class.mysqli.php