Funzioni PHP MySQLi
Introduzione a PHP MySQLi
Le funzioni MySQLi consentono di accedere ai server di database MySQL.
Nota: l'estensione MySQLi è progettata per funzionare con MySQL versione 4.1.13 o successive.
Installazione / Configurazione runtime
Affinché le funzioni MySQLi siano disponibili, è necessario compilare PHP con il supporto per l'estensione MySQLi.
L'estensione MySQLi è stata introdotta con la versione PHP 5.0.0. Il MySQL Native Driver è stato incluso nella versione PHP 5.3.0.
Per i dettagli sull'installazione, visitare: http://php.net/manual/en/mysqli.installation.php
Per i dettagli sulla configurazione del runtime, vai a: http://php.net/manual/en/mysqli.configuration.php
Funzioni PHP MySQLi
| Function | Description |
|---|---|
| affected_rows() | Returns the number of affected rows in the previous MySQL operation |
| autocommit() | Turns on or off auto-committing database modifications |
| begin_transaction() | Starts a transaction |
| change_user() | Changes the user of the specified database connection |
| character_set_name() | Returns the default character set for the database connection |
| close() | Closes a previously opened database connection |
| commit() | Commits the current transaction |
| connect() | Opens a new connection to the MySQL server |
| connect_errno() | Returns the error code from the last connection error |
| connect_error() | Returns the error description from the last connection error |
| data_seek() | Adjusts the result pointer to an arbitrary row in the result-set |
| debug() | Performs debugging operations |
| dump_debug_info() | Dumps debugging info into the log |
| errno() | Returns the last error code for the most recent function call |
| error() | Returns the last error description for the most recent function call |
| error_list() | Returns a list of errors for the most recent function call |
| fetch_all() | Fetches all result rows as an associative array, a numeric array, or both |
| fetch_array() | Fetches a result row as an associative, a numeric array, or both |
| fetch_assoc() | Fetches a result row as an associative array |
| fetch_field() | Returns the next field in the result-set, as an object |
| fetch_field_direct() | Returns meta-data for a single field in the result-set, as an object |
| fetch_fields() | Returns an array of objects that represent the fields in a result-set |
| fetch_lengths() | Returns the lengths of the columns of the current row in the result-set |
| fetch_object() | Returns the current row of a result-set, as an object |
| fetch_row() | Fetches one row from a result-set and returns it as an enumerated array |
| field_count() | Returns the number of columns for the most recent query |
| field_seek() | Sets the field cursor to the given field offset |
| get_charset() | Returns a character set object |
| get_client_info() | Returns the MySQL client library version |
| get_client_stats() | Returns statistics about client per-process |
| get_client_version() | Returns the MySQL client library version as an integer |
| get_connection_stats() | Returns statistics about the client connection |
| get_host_info() | Returns the MySQL server hostname and the connection type |
| get_proto_info() | Returns the MySQL protocol version |
| get_server_info() | Returns the MySQL server version |
| get_server_version() | Returns the MySQL server version as an integer |
| info() | Returns information about the last executed query |
| init() | Initializes MySQLi and returns a resource for use with real_connect() |
| insert_id() | Returns the auto-generated id from the last query |
| kill() | Asks the server to kill a MySQL thread |
| more_results() | Checks if there are more results from a multi query |
| multi_query() | Performs one or more queries on the database |
| next_result() | Prepares the next result-set from multi_query() |
| options() | Sets extra connect options and affect behavior for a connection |
| ping() | Pings a server connection, or tries to reconnect if the connection has gone down |
| poll() | Polls connections |
| prepare() | Prepares an SQL statement for execution |
| query() | Performs a query against a database |
| real_connect() | Opens a new connection to the MySQL server |
| real_escape_string() | Escapes special characters in a string for use in an SQL statement |
| real_query() | Executes a single SQL query |
| reap_async_query() | Returns result from an async SQL query |
| refresh() | Refreshes/flushes tables or caches, or resets the replication server information |
| rollback() | Rolls back the current transaction for the database |
| select_db() | Select the default database for database queries |
| set_charset() | Sets the default client character set |
| set_local_infile_default() | Unsets user defined handler for load local infile command |
| set_local_infile_handler() | Set callback function for LOAD DATA LOCAL INFILE command |
| sqlstate() | Returns the SQLSTATE error code for the error |
| ssl_set() | Used to establish secure connections using SSL |
| stat() | Returns the current system status |
| stmt_init() | Initializes a statement and returns an object for use with stmt_prepare() |
| store_result() | Transfers a result-set from the last query |
| thread_id() | Returns the thread ID for the current connection |
| thread_safe() | Returns whether the client library is compiled as thread-safe |
| use_result() | Initiates the retrieval of a result-set from the last query executed |
| warning_count() | Returns the number of warnings from the last query in the connection |