Wikimedia\Rdbms\DatabaseMysqli Class Reference

Database abstraction object for PHP extension mysqli. More...

Inheritance diagram for Wikimedia\Rdbms\DatabaseMysqli:

Collaboration diagram for Wikimedia\Rdbms\DatabaseMysqli:

Public Member Functions
	insertId ()
	lastErrno ()
Public Member Functions inherited from Wikimedia\Rdbms\DatabaseMysqlBase
	__construct (array $params)
	Additional $params include:
	addIdentifierQuotes ( $s)
	MySQL uses backticks for identifier quoting instead of the sql standard "double quotes".
	buildIntegerCast ( $field)
	buildStringCast ( $field)
	Parameters string $field Field or column to cast Returns string Since 1.28 Stable to override Stable to override
	dataSeek ( $res, $row)
	deleteJoin ( $delTable, $joinTable, $delVar, $joinVar, $conds, $fname=__METHOD__)
	DELETE where the condition is a join.
	duplicateTableStructure ( $oldName, $newName, $temporary=false, $fname=__METHOD__)
	estimateRowCount ( $table, $var=' *', $conds='', $fname=__METHOD__, $options=[], $join_conds=[])
	Estimate rows in dataset Returns estimated count, based on EXPLAIN output Takes same arguments as Database::select()
	fetchObject ( $res)
	fetchRow ( $res)
	fieldInfo ( $table, $field)
	fieldName ( $res, $n)
	fieldType ( $res, $n)
	mysql_field_type() wrapper
	freeResult ( $res)
	getMasterPos ()
	Get the position of the master from SHOW MASTER STATUS.
	getReplicaPos ()
	Get the position of the master from SHOW SLAVE STATUS.
	getServerUptime ()
	Determines how long the server has been up.
	getServerVersion ()
	getSoftwareLink ()
	getType ()
	ignoreIndexClause ( $index)
	indexInfo ( $table, $index, $fname=__METHOD__)
	Get information about an index into an object Returns false if the index does not exist.
	isQuotedIdentifier ( $name)
	isView ( $name, $prefix=null)
	Differentiates between a TABLE and a VIEW.
	lastError ()
	listTables ( $prefix=null, $fname=__METHOD__)
	List all tables on the database.
	listViews ( $prefix=null, $fname=__METHOD__)
	Lists VIEWs in the database.
	lock ( $lockName, $method, $timeout=5)
	lockIsFree ( $lockName, $method)
	Check to see if a named lock is available.
	masterPosWait (DBMasterPos $pos, $timeout)
	Wait for the replica DB to catch up to a given master position.Note that this does not start any new transactions. If any existing transaction is flushed, and this is called, then queries will reflect the point the DB was synced up to (on success) without interference from REPEATABLE-READ snapshots. Parameters DBMasterPos $pos int $timeout The maximum number of seconds to wait for synchronisation Returns int|null Zero if the replica DB was past that position already, greater than zero if we waited for some period of time, less than zero if it timed out, and null on error Exceptions DBError If an error occurs, see IDatabase::query() Stable to override Stable to override
	namedLocksEnqueue ()
	Check to see if a named lock used by lock() use blocking queues. Returns bool Since 1.26 Stable to override Stable to override
	numFields ( $res)
	numRows ( $res)
	serverIsReadOnly ()
	Returns bool Whether the DB is marked as read-only server-side Since 1.28 Stable to override Stable to override
	setBigSelects ( $value=true)
	setSessionOptions (array $options)
	streamStatementEnd (&$sql, &$newLine)
	strencode ( $s)
	tableExists ( $table, $fname=__METHOD__)
	Query whether a given table exists.
	tableLocksHaveTransactionScope ()
	Checks if table locks acquired by lockTables() are transaction-bound in their scope.
	unlock ( $lockName, $method)
	See https://dev.mysql.com/doc/refman/5.7/en/miscellaneous-functions.html#function_release-lock.
	useIndexClause ( $index)
	wasConnectionError ( $errno)
	Do not use this method outside of Database/DBError classes.
	wasDeadlock ()
	Determines if the last failure was due to a deadlock.
	wasLockTimeout ()
	Determines if the last failure was due to a lock timeout.
	wasReadOnlyError ()
	Determines if the last failure was due to the database being read-only.
Public Member Functions inherited from Wikimedia\Rdbms\Database
	__clone ()
	Make sure that copies do not share the same client binding handle.
	__destruct ()
	Run a few simple sanity checks and close dangling connections.
	__sleep ()
	Called by serialize.
	__toString ()
	Get a debugging string that mentions the database type, the ID of this instance, and the ID of any underlying connection resource or driver object if one is present.
	addQuotes ( $s)
	Escape and quote a raw value string for use in a SQL query. Parameters string | int | float | null | bool | Blob $s Returns string Stable to override
	affectedRows ()
	Get the number of rows affected by the last write query.
	aggregateValue ( $valuedata, $valuename='value')
	Return aggregated value alias. Parameters array $valuedata string $valuename Returns array|string Deprecated: Since 1.33 Stable to override
	anyChar ()
	Returns a token for buildLike() that denotes a '_' to be used in a LIKE query.
	anyString ()
	Returns a token for buildLike() that denotes a '' to be used in a LIKE query.
	assertNoOpenTransactions ()
	Assert that all explicit transactions or atomic sections have been closed.
	begin ( $fname=__METHOD__, $mode=self::TRANSACTION_EXPLICIT)
	Begin a transaction.
	bitAnd ( $fieldLeft, $fieldRight)
	Parameters string | int $fieldLeft string | int $fieldRight Returns string Stable to override
	bitNot ( $field)
	Parameters string | int $field Returns string Stable to override
	bitOr ( $fieldLeft, $fieldRight)
	Parameters string | int $fieldLeft string | int $fieldRight Returns string Stable to override
	buildConcat ( $stringList)
	Build a concatenation list to feed into a SQL query. Parameters string[] $stringList Raw SQL expression list; caller is responsible for escaping Returns string Stable to override
	buildGreatest ( $fields, $values)
	Build a GREATEST function statement comparing columns/values.Integer and float values in $values will not be quotedIf $fields is an array, then each value with a string key is treated as an expression (which must be manually quoted); such string keys do not appear in the SQL and are only descriptive aliases. Parameters string | string[] $fields Name(s) of column(s) with values to compare string | int | float | string[] | int[] | float[] $values Values to compare Returns mixed Since 1.35 Stable to override
	buildGroupConcatField ( $delim, $table, $field, $conds='', $join_conds=[])
	Build a GROUP_CONCAT or equivalent statement for a query.This is useful for combining a field for several rows into a single string. NULL values will not appear in the output, duplicated values will appear, and the resulting delimiter-separated values have no defined sort order. Code using the results may need to use the PHP unique() or sort() methods. Parameters string $delim Glue to bind the results together string | array $table Table name string $field Field name string | array $conds Conditions string | array $join_conds Join conditions Returns string SQL text Since 1.23 Stable to override
	buildLeast ( $fields, $values)
	Build a LEAST function statement comparing columns/values.Integer and float values in $values will not be quotedIf $fields is an array, then each value with a string key is treated as an expression (which must be manually quoted); such string keys do not appear in the SQL and are only descriptive aliases. Parameters string | string[] $fields Name(s) of column(s) with values to compare string | int | float | string[] | int[] | float[] $values Values to compare Returns mixed Since 1.35 Stable to override
	buildLike ( $param,... $params)
	LIKE statement wrapper.This takes a variable-length argument list with parts of pattern to match containing either string literals that will be escaped or tokens returned by anyChar() or anyString(). Alternatively, the function could be provided with an array of aforementioned parameters.Example: $dbr->buildLike( 'My_page_title/', $dbr->anyString() ) returns a LIKE clause that searches for subpages of 'My page title'. Alternatively: $pattern = [ 'My_page_title/', $dbr->anyString() ]; $query .= $dbr->buildLike( $pattern ); Since 1.16 Parameters array[] | string | LikeMatch $param string|LikeMatch ...$params Returns string Fully built LIKE statement Stable to override
	buildSelectSubquery ( $table, $vars, $conds='', $fname=__METHOD__, $options=[], $join_conds=[])
	Equivalent to IDatabase::selectSQLText() except wraps the result in Subquery.
	buildSubstring ( $input, $startPosition, $length=null)
	Stable to override
	cancelAtomic ( $fname=__METHOD__, AtomicSectionIdentifier $sectionId=null)
	Cancel an atomic section of SQL statements.
	clearFlag ( $flag, $remember=self::REMEMBER_NOTHING)
	Clear a flag for this connection.
	close ( $fname=__METHOD__, $owner=null)
	Close the database connection.
	commit ( $fname=__METHOD__, $flush=self::FLUSHING_ONE)
	Commits a transaction previously started using begin()
	conditional ( $cond, $trueVal, $falseVal)
	Returns an SQL expression for a simple conditional.This doesn't need to be overridden unless CASE isn't supported in the RDBMS. Parameters string | array $cond SQL expression which will result in a boolean value string $trueVal SQL expression to return if true string $falseVal SQL expression to return if false Returns string SQL fragment Stable to override
	connectionErrorLogger ( $errno, $errstr)
	Error handler for logging errors during database connection This method should not be used outside of Database classes.
	databasesAreIndependent ()
	Returns true if DBs are assumed to be on potentially different servers.In systems like mysql/mariadb, different databases can easily be referenced on a single connection merely by name, even in a single query via JOIN. On the other hand, Postgres treats databases as logically separate, with different database users, requiring special mechanisms like postgres_fdw to "mount" foreign DBs. This is true even among DBs on the same server. Changing the selected database via selectDomain() requires a new connection. Returns bool Since 1.29 Stable to override
	dbSchema ( $schema=null)
	Get/set the db schema.
	deadlockLoop (... $args)
	Perform a deadlock-prone transaction.This function invokes a callback function to perform a set of write queries. If a deadlock occurs during the processing, the transaction will be rolled back and the callback function will be called again.Avoid using this method outside of Job or Maintenance classes.Usage: $dbw->deadlockLoop( callback, ... );Extra arguments are passed through to the specified callback function. This method requires that no transactions are already active to avoid causing premature commits or exceptions.Returns whatever the callback function returned on its successful, iteration, or false on error, for example if the retry limit was reached. Parameters mixed ...$args Returns mixed Exceptions DBUnexpectedError Exception Stable to override
	decodeBlob ( $b)
	Some DBMSs return a special placeholder object representing blob fields in result objects.Pass the object through this function to return the original string. Parameters string | Blob $b Returns string Exceptions DBError Stable to override
	decodeExpiry ( $expiry, $format=TS_MW)
	Decode an expiry time into a DBMS independent format.
	delete ( $table, $conds, $fname=__METHOD__)
	Delete all rows in a table that match a condition.
	doAtomicSection ( $fname, callable $callback, $cancelable=self::ATOMIC_NOT_CANCELABLE)
	Perform an atomic section of reversable SQL statements from a callback.
	dropTable ( $table, $fname=__METHOD__)
	Delete a table.
	encodeBlob ( $b)
	Some DBMSs have a special format for inserting into blob fields, they don't allow simple quoted strings to be inserted.To insert into such a field, pass the data through this function before passing it to IDatabase::insert(). Parameters string $b Returns string|Blob Exceptions DBError Stable to override
	encodeExpiry ( $expiry)
	Encode an expiry time into the DBMS dependent format.
	endAtomic ( $fname=__METHOD__)
	Ends an atomic section of SQL statements.
	explicitTrxActive ()
	fieldExists ( $table, $field, $fname=__METHOD__)
	Determines whether a field exists in a table.
	flushSnapshot ( $fname=__METHOD__, $flush=self::FLUSHING_ONE)
	Commit any transaction but error out if writes or callbacks are pending.
	getDBname ()
	Get the current DB name.
	getDomainID ()
	Return the currently selected domain ID.
	getFlag ( $flag)
	Returns a boolean whether the flag $flag is set for this connection.
	getInfinity ()
	Find out when 'infinity' is.Most DBMSes support this. This is a special keyword for timestamps in PostgreSQL, and works with CHAR(14) as well because "i" sorts after all numbers. Returns string Stable to override
	getLag ()
	Get the amount of replication lag for this database server.
	getLBInfo ( $name=null)
	Get properties passed down from the server info array of the load balancer.
	getScopedLockAndFlush ( $lockKey, $fname, $timeout)
	Acquire a named lock, flush any transaction, and return an RAII style unlocker object.
	getServer ()
	Get the server hostname or IP address.
	getServerInfo ()
	Get a human-readable string describing the current software version.
	getSessionLagStatus ()
	Get the replica DB lag when the current transaction started or a general lag estimate if not transaction is active.
	getTopologyRole ()
	Get the replication topology role of this server.
	getTopologyRootMaster ()
	Get the host (or address) of the root master server for the replication topology.
	implicitOrderby ()
	Returns true if this database does an implicit order by when the column has an index For example: SELECT page_title FROM page LIMIT 1. Returns bool Stable to override
	indexExists ( $table, $index, $fname=__METHOD__)
	Determines whether an index exists.
	indexUnique ( $table, $index, $fname=__METHOD__)
	Determines if a given index is unique. Parameters string $table string $index string $fname Calling function name Returns bool Stable to override
	initConnection ()
	Initialize the connection to the database over the wire (or to local files)
	insert ( $table, $rows, $fname=__METHOD__, $options=[])
	Insert the given row(s) into a table.
	insertSelect ( $destTable, $srcTable, $varMap, $conds, $fname=__METHOD__, $insertOptions=[], $selectOptions=[], $selectJoinConds=[])
	INSERT SELECT wrapper.
	isOpen ()
	isReadOnly ()
	lastDoneWrites ()
	Get the last time the connection may have been used for a write query.
	lastQuery ()
	Get the last query that sent on account of IDatabase::query()
	limitResult ( $sql, $limit, $offset=false)
	Construct a LIMIT query with optional offset.The SQL should be adjusted so that only the first $limit rows are returned. If $offset is provided as well, then the first $offset rows should be discarded, and the next $limit rows should be returned. If the result of the query is not ordered, then the rows to be returned are theoretically arbitrary.$sql is expected to be a SELECT, if that makes a difference. Parameters string $sql SQL query we will append the limit too int $limit The SQL limit int | bool $offset The SQL offset (default false) Returns string Since 1.34 Stable to override
	lockForUpdate ( $table, $conds='', $fname=__METHOD__, $options=[], $join_conds=[])
	Lock all rows meeting the given conditions/options FOR UPDATE.
	lockTables (array $read, array $write, $method)
	Lock specific tables.
	makeList (array $a, $mode=self::LIST_COMMA)
	Makes an encoded list of strings from an array.
	makeWhereFrom2d ( $data, $baseKey, $subKey)
	Build a partial where clause from a 2-d array such as used for LinkBatch.
	maxListLen ()
	Return the maximum number of items allowed in a list, or 0 for unlimited. Returns int Stable to override
	newSelectQueryBuilder ()
	Create an empty SelectQueryBuilder which can be used to run queries against this connection. Returns SelectQueryBuilder
	nextSequenceValue ( $seqName)
	Deprecated method, calls should be removed.
	onAtomicSectionCancel (callable $callback, $fname=__METHOD__)
	Run a callback when the atomic section is cancelled.
	onTransactionCommitOrIdle (callable $callback, $fname=__METHOD__)
	Run a callback as soon as there is no transaction pending.
	onTransactionIdle (callable $callback, $fname=__METHOD__)
	Alias for onTransactionCommitOrIdle() for backwards-compatibility.
	onTransactionPreCommitOrIdle (callable $callback, $fname=__METHOD__)
	Run a callback before the current transaction commits or now if there is none.
	onTransactionResolution (callable $callback, $fname=__METHOD__)
	Run a callback as soon as the current transaction commits or rolls back.
	pendingWriteAndCallbackCallers ()
	List the methods that have write queries or callbacks for the current transaction.
	pendingWriteCallers ()
	Get the list of method names that did write queries for this transaction.
	pendingWriteQueryDuration ( $type=self::ESTIMATE_TOTAL)
	Get the time spend running write queries for this transaction.
	pendingWriteRowsAffected ()
	Get the number of affected rows from pending write queries.
	ping (&$rtt=null)
	Ping the server and try to reconnect if it there is no connection.
	preCommitCallbacksPending ()
	query ( $sql, $fname=__METHOD__, $flags=self::QUERY_NORMAL)
	Run an SQL query and return the result.
	replace ( $table, $uniqueKeys, $rows, $fname=__METHOD__)
	Insert row(s) into a table, deleting all conflicting rows beforehand.
	reportQueryError ( $error, $errno, $sql, $fname, $ignore=false)
	Report a query error.
	restoreFlags ( $state=self::RESTORE_PRIOR)
	Restore the flags to their prior state before the last setFlag/clearFlag call.
	rollback ( $fname=__METHOD__, $flush=self::FLUSHING_ONE)
	Rollback a transaction previously started using begin()
	runOnTransactionIdleCallbacks ( $trigger)
	Actually consume and run any "on transaction idle/resolution" callbacks.
	runOnTransactionPreCommitCallbacks ()
	Actually consume and run any "on transaction pre-commit" callbacks.
	runTransactionListenerCallbacks ( $trigger)
	Actually run any "transaction listener" callbacks.
	select ( $table, $vars, $conds='', $fname=__METHOD__, $options=[], $join_conds=[])
	Execute a SELECT query constructed using the various parameters provided.
	selectDB ( $db)
	Change the current database.
	selectDomain ( $domain)
	Set the current domain (database, schema, and table prefix)
	selectField ( $table, $var, $cond='', $fname=__METHOD__, $options=[], $join_conds=[])
	A SELECT wrapper which returns a single field from a single result row.
	selectFieldValues ( $table, $var, $cond='', $fname=__METHOD__, $options=[], $join_conds=[])
	A SELECT wrapper which returns a list of single field values from result rows.
	selectRow ( $table, $vars, $conds, $fname=__METHOD__, $options=[], $join_conds=[])
	Wrapper to IDatabase::select() that only fetches one row (via LIMIT)
	selectRowCount ( $tables, $var=' *', $conds='', $fname=__METHOD__, $options=[], $join_conds=[])
	Get the number of rows in dataset.
	selectSQLText ( $table, $vars, $conds='', $fname=__METHOD__, $options=[], $join_conds=[])
	Take the same arguments as IDatabase::select() and return the SQL it would use.This can be useful for making UNION queries, where the SQL text of each query is needed. In general, however, callers outside of Database classes should just use select(). See also IDatabase::select() Parameters string | array $table Table name string | array $vars Field names string | array $conds Conditions string $fname Caller function name string | array $options Query options string | array $join_conds Join conditions Returns string SQL query string Stable to override
	setFlag ( $flag, $remember=self::REMEMBER_NOTHING)
	Set a flag for this connection.
	setIndexAliases (array $aliases)
	Convert certain index names to alternative names before querying the DB.Note that this applies to indexes regardless of the table they belong to.This can be employed when an index was renamed X => Y in code, but the new Y-named indexes were not yet built on all DBs. After all the Y-named ones are added by the DBA, the aliases can be removed, and then the old X-named indexes dropped. Parameters string[] $aliases Since 1.31 Stable to override
	setLBInfo ( $nameOrArray, $value=null)
	Set the entire array or a particular key of the managing load balancer info array.
	setLogger (LoggerInterface $logger)
	Set the PSR-3 logger interface to use for query logging.
	setSchemaVars ( $vars)
	Set schema variables to be used when streaming commands from SQL files or stdin.
	setTableAliases (array $aliases)
	Make certain table names use their own database, schema, and table prefix when passed into SQL queries pre-escaped and without a qualified database name.For example, "user" can be converted to "myschema.mydbname.user" for convenience. Appearances like user, somedb.user, somedb.someschema.user will used literally.Calling this twice will completely clear any old table aliases. Also, note that callers are responsible for making sure the schemas and databases actually exist. Parameters array[] $aliases Map of (table => (dbname, schema, prefix) map) Since 1.28 Stable to override
	setTransactionListener ( $name, callable $callback=null)
	Run a callback after each time any transaction commits or rolls back.
	setTrxEndCallbackSuppression ( $suppress)
	Whether to disable running of post-COMMIT/ROLLBACK callbacks.
	sourceFile ( $filename, callable $lineCallback=null, callable $resultCallback=null, $fname=false, callable $inputCallback=null)
	Read and execute SQL commands from a file.
	sourceStream ( $fp, callable $lineCallback=null, callable $resultCallback=null, $fname=__METHOD__, callable $inputCallback=null)
	Read and execute commands from an open file handle.
	startAtomic ( $fname=__METHOD__, $cancelable=self::ATOMIC_NOT_CANCELABLE)
	Begin an atomic section of SQL statements.
	strreplace ( $orig, $old, $new)
	Returns a SQL expression for simple string replacement (e.g.REPLACE() in mysql) Parameters string $orig Column to modify string $old Column to seek string $new Column to replace with Returns string Stable to override
	tableName ( $name, $format='quoted')
	Format a table name ready for use in constructing an SQL query.This does two important things: it quotes the table names to clean them up, and it adds a table prefix if only given a table name with no quotes.All functions of this object which require a table name call this function themselves. Pass the canonical name to such functions. This is only needed when calling query() directly. Note This function does not sanitize user input. It is not safe to use this function to escape user input. Parameters string $name Database table name string $format One of: quoted - Automatically pass the table name through addIdentifierQuotes() so that it can be used in a query. raw - Do not add identifier quotes to the table name Returns string Full database name Stable to override
	tableNames (... $tables)
	Fetch a number of table names into an array This is handy when you need to construct SQL for joins.
	tableNamesN (... $tables)
	Fetch a number of table names into an zero-indexed numerical array This is handy when you need to construct SQL for joins.
	tablePrefix ( $prefix=null)
	Get/set the table prefix.
	textFieldSize ( $table, $field)
	Returns the size of a text field, or -1 for "unlimited". Parameters string $table string $field Returns int Stable to override
	timestamp ( $ts=0)
	Convert a timestamp in one of the formats accepted by ConvertibleTimestamp to the format used for inserting into timestamp fields in this DBMS.The result is unquoted, and needs to be passed through addQuotes() before it can be included in raw SQL. Parameters string | int $ts Returns string Stable to override
	timestampOrNull ( $ts=null)
	Convert a timestamp in one of the formats accepted by ConvertibleTimestamp to the format used for inserting into timestamp fields in this DBMS.
	truncate ( $tables, $fname=__METHOD__)
	Delete all data in a table(s) and reset any sequences owned by that table(s)
	trxLevel ()
	Gets the current transaction level.
	trxStatus ()
	trxTimestamp ()
	Get the UNIX timestamp of the time that the transaction was established.
	unionConditionPermutations ( $table, $vars, array $permute_conds, $extra_conds='', $fname=__METHOD__, $options=[], $join_conds=[])
	Construct a UNION query for permutations of conditions.
	unionQueries ( $sqls, $all)
	Construct a UNION query.This is used for providing overload point for other DB abstractions not compatible with the MySQL syntax. Parameters array $sqls SQL statements to combine bool $all Either IDatabase::UNION_ALL or IDatabase::UNION_DISTINCT Returns string SQL fragment Stable to override
	unionSupportsOrderAndLimit ()
	Determine if the RDBMS supports ORDER BY and LIMIT for separate subqueries within UNION. Returns bool Stable to override
	unlockTables ( $method)
	Unlock all tables locked via lockTables()
	update ( $table, $set, $conds, $fname=__METHOD__, $options=[])
	Update all rows in a table that match a given condition.
	upsert ( $table, array $rows, $uniqueKeys, array $set, $fname=__METHOD__)
	Upsert the given row(s) into a table.
	wasConnectionLoss ()
	Determines if the last query error was due to a dropped connection.Note that during a connection loss, the prior transaction will have been lost Returns bool Since 1.31 Stable to override
	wasErrorReissuable ()
	Determines if the last query error was due to something outside of the query itself.
	writesOrCallbacksPending ()
	Whether there is a transaction open with either possible write queries or unresolved pre-commit/commit/resolution callbacks pending.
	writesPending ()
Public Member Functions inherited from Wikimedia\Rdbms\IDatabase
	buildSubString ( $input, $startPosition, $length=null)
	Build a SUBSTRING function.

Protected Member Functions
	closeConnection ()
	doQuery ( $sql)
	fetchAffectedRowCount ()
	getBindingHandle ()
	mysqlConnect ( $realServer, $dbName)
	mysqlDataSeek ( $res, $row)
	mysqlError ( $conn=null)
	mysqlFetchArray ( $res)
	mysqlFetchField ( $res, $n)
	mysqlFetchObject ( $res)
	mysqlFieldName ( $res, $n)
	mysqlFieldType ( $res, $n)
	mysqlFreeResult ( $res)
	mysqlNumFields ( $res)
	mysqlNumRows ( $res)
	mysqlRealEscapeString ( $s)
	Escapes special characters in a string for use in an SQL statement.
Protected Member Functions inherited from Wikimedia\Rdbms\DatabaseMysqlBase
	doGetLag ()
	Stable to override Stable to override
	doLockTables (array $read, array $write, $method)
	Helper function for lockTables() that handles the actual table locking.
	doReplace ( $table, array $uniqueKeys, array $rows, $fname)
	doSelectDomain (DatabaseDomain $domain)
	Stable to override.
	doUnlockTables ( $method)
	Helper function for unlockTables() that handles the actual table unlocking.
	doUpsert ( $table, array $rows, array $uniqueKeys, array $set, $fname)
	getApproximateLagStatus ()
	Get a replica DB lag estimate for this server at the start of a transaction.
	getHeartbeatData (array $conds)
	getLagDetectionMethod ()
	getLagFromPtHeartbeat ()
	getLagFromSlaveStatus ()
	getMasterServerInfo ()
	getReplicationSafetyInfo ()
	getServerGTIDs ( $fname=__METHOD__)
	getServerId ()
	getServerRoleStatus ( $role, $fname=__METHOD__)
	getServerUUID ()
	isInsertSelectSafe (array $insertOptions, array $selectOptions)
	Stable to override.
	isTransactableQuery ( $sql)
	Determine whether a SQL statement is sensitive to isolation level.
	open ( $server, $user, $password, $dbName, $schema, $tablePrefix)
	Open a new connection to the database (closing any existing one)
	useGTIDs ()
	wasKnownStatementRollbackError ()
	Stable to override.
	wasQueryTimeout ( $error, $errno)
	Checks whether the cause of the error is detected to be a timeout.
Protected Member Functions inherited from Wikimedia\Rdbms\Database
	assertBuildSubstringParams ( $startPosition, $length)
	Check type and bounds for parameters to self::buildSubstring()
	assertConditionIsNotEmpty ( $conds, string $fname, bool $deprecate)
	Check type and bounds conditions parameters for update.
	assertHasConnectionHandle ()
	Make sure there is an open connection handle (alive or not) as a sanity check.
	assertIsWritableMaster ()
	Make sure that this server is not marked as a replica nor read-only as a sanity check.
	buildSuperlative ( $sqlfunc, $fields, $values)
	Build a superlative function statement comparing columns/values.
	doBegin ( $fname)
	Issues the BEGIN command to the database server.
	doCommit ( $fname)
	Issues the COMMIT command to the database server.
	doDropTable ( $table, $fname)
	doHandleSessionLossPreconnect ()
	Reset any additional subclass trx* and session* fields Stable to override.
	doInitConnection ()
	Actually connect to the database over the wire (or to local files)
	doInsert ( $table, array $rows, $fname)
	doInsertNonConflicting ( $table, array $rows, $fname)
	doInsertSelectGeneric ( $destTable, $srcTable, array $varMap, $conds, $fname, array $insertOptions, array $selectOptions, $selectJoinConds)
	Implementation of insertSelect() based on select() and insert()
	doInsertSelectNative ( $destTable, $srcTable, array $varMap, $conds, $fname, array $insertOptions, array $selectOptions, $selectJoinConds)
	Native server-side implementation of insertSelect() for situations where we don't want to select everything into memory.
	doReleaseSavepoint ( $identifier, $fname)
	Release a savepoint.
	doRollback ( $fname)
	Issues the ROLLBACK command to the database server.
	doRollbackToSavepoint ( $identifier, $fname)
	Rollback to a savepoint.
	doSavepoint ( $identifier, $fname)
	Create a savepoint.
	doTruncate (array $tables, $fname)
	escapeLikeInternal ( $s, $escapeChar='`')
	Stable to override.
	executeQuery ( $sql, $fname, $flags)
	Execute a query, retrying it if there is a recoverable connection loss.
	extractSingleFieldFromList ( $var)
	fieldHasBit ( $field, $flags)
	fieldNamesWithAlias ( $fields)
	Gets an array of aliased field names.
	fieldNameWithAlias ( $name, $alias=false)
	Get an aliased field name e.g.
	getDefaultSchemaVars ()
	Get schema variables to use if none have been set via setSchemaVars().
	getLastPHPError ()
	getLazyMasterHandle ()
	Get a handle to the master server of the cluster to which this server belongs.
	getLogContext (array $extras=[])
	Create a log context to pass to PSR-3 logger functions.
	getQueryVerb ( $sql)
	getReadOnlyReason ()
	getRecordedTransactionLagStatus ()
	Get the replica DB lag when the current transaction started.
	getSchemaVars ()
	Get schema variables.
	getTempTableWrites ( $sql, $pseudoPermanent)
	getTransactionRoundId ()
	indexName ( $index)
	Allows for index remapping in queries where this is not consistent across DBMS.
	installErrorHandler ()
	Set a custom error handler for logging errors during database connection.
	isFlagInOptions ( $option, array $options)
	isPristineTemporaryTable ( $table)
	Check if the table is both a TEMPORARY table and has not yet received CRUD operations.
	isWriteQuery ( $sql, $flags)
	Determine whether a query writes to the DB.
	makeConditionCollidesUponKeys (array $rows, array $uniqueKeys)
	makeGroupByWithHaving ( $options)
	Returns an optional GROUP BY with an optional HAVING.
	makeInsertLists (array $rows)
	Make SQL lists of columns, row tuples for INSERT/VALUES expressions.
	makeInsertNonConflictingVerbAndOptions ()
	Stable to override.
	makeOrderBy ( $options)
	Returns an optional ORDER BY.
	makeSelectOptions (array $options)
	Returns an optional USE INDEX clause to go after the table, and a string to go at the end of the query.
	makeUpdateOptions ( $options)
	Make UPDATE options for the Database::update function.
	makeUpdateOptionsArray ( $options)
	Make UPDATE options array for Database::makeUpdateOptions.
	newExceptionAfterConnectError ( $error)
	normalizeConditions ( $conds, $fname)
	normalizeOptions ( $options)
	normalizeRowArray (array $rowOrRows)
	normalizeUpsertKeys ( $uniqueKeys)
	qualifiedTableComponents ( $name)
	Get the table components needed for a query given the currently selected database.
	registerTempWrites ( $ret, array $changes)
	relationSchemaQualifier ()
	Stable to override.
	replaceLostConnection ( $fname)
	Close any existing (dead) database connection and open a new connection.
	replaceVars ( $ins)
	Database independent variable replacement.
	restoreErrorHandler ()
	Restore the previous error handler and return the last PHP error for this DB.
	resultObject ( $result)
	Take a query result and wrap it in an iterable result wrapper if necessary.
	tableNamesWithIndexClauseOrJOIN ( $tables, $use_index=[], $ignore_index=[], $join_conds=[])
	Get the aliased table name clause for a FROM clause which might have a JOIN and/or USE INDEX or IGNORE INDEX clause.
	tableNameWithAlias ( $table, $alias=false)
	Get an aliased table name.

Additional Inherited Members
Static Public Member Functions inherited from Wikimedia\Rdbms\Database
static	attributesFromType ( $dbType, $driver=null)
static	factory ( $type, $params=[], $connect=self::NEW_CONNECTED)
	Construct a Database subclass instance given a database type and parameters.
static	getCacheSetOptions (IDatabase $db1, IDatabase $db2=null)
	Merge the result of getSessionLagStatus() for several DBs using the most pessimistic values to estimate the lag of any data derived from them in combination.
Static Protected Member Functions inherited from Wikimedia\Rdbms\Database
static	getAttributes ()
	Stable to override.
Protected Attributes inherited from Wikimedia\Rdbms\DatabaseMysqlBase
bool null	$defaultBigSelects = null
string	$lagDetectionMethod
	Method to detect replica DB lag.
array	$lagDetectionOptions = []
	Method to detect replica DB lag.
MySQLMasterPos	$lastKnownReplicaPos
string	$sqlMode
	sql_mode value to send on connection
string null	$sslCAFile
string null	$sslCAPath
string null	$sslCertPath
string[] null	$sslCiphers
string null	$sslKeyPath
bool	$useGTIDs = false
	bool Whether to use GTID methods
bool	$utf8Mode
	Use experimental UTF-8 transmission encoding.
Protected Attributes inherited from Wikimedia\Rdbms\Database
integer null	$affectedRowCount
	Rows affected by the last query to query() or its CRUD wrappers.
string	$agent
	Agent name for query profiling.
bool	$cliMode
	Whether this PHP instance is for a CLI script.
object resource null	$conn
	Database connection.
array	$connectionParams
	Parameters used by initConnection() to establish a connection.
string[] int[] float[]	$connectionVariables
	SQL variables values to use for all new connections.
LoggerInterface	$connLogger
DatabaseDomain	$currentDomain
string	$delimiter = ';'
	Current SQL query delimiter.
callable	$deprecationLogger
	Deprecation logging callback.
callable	$errorLogger
	Error logging callback.
int	$flags
	Current bit field of class DBO_* constants.
string[]	$indexAliases = []
	Current map of (index alias => index)
array	$lbInfo = []
	Current LoadBalancer tracking information.
int	$nonNativeInsertSelectBatchSize
	Row batch size to use for emulated INSERT SELECT queries.
string	$password
	Password used to establish the current connection.
callable null	$profiler
LoggerInterface	$queryLogger
LoggerInterface	$replLogger
array null	$schemaVars
	Current variables use for schema element placeholders.
string	$server
	Server that this instance is currently connected to.
array	$sessionDirtyTempTables = []
	Map of (table name => 1) for current TEMPORARY tables.
array	$sessionNamedLocks = []
	Map of (name => 1) for locks obtained via lock()
array	$sessionTempTables = []
	Map of (table name => 1) for current TEMPORARY tables.
BagOStuff	$srvCache
	APC cache.
array[]	$tableAliases = []
	Current map of (table => (dbname, schema, prefix) map)
string	$topologyRole
	Replication topology role of the server; one of the class ROLE_* constants.
string null	$topologyRootMaster
	Host (or address) of the root master server for the replication topology.
TransactionProfiler	$trxProfiler
string	$user
	User that this instance is currently connected under the name of.
Static Protected Attributes inherited from Wikimedia\Rdbms\Database
static int	$DBO_MUTABLE
	Bit field of all DBO_* flags that can be changed after connection.
static string[]	$MUTABLE_FLAGS
	List of DBO_* flags that can be changed after connection.

Detailed Description

Database abstraction object for PHP extension mysqli.

Since

1.22

See also

Database -file-suppress PhanParamSignatureMismatch resource vs mysqli_result

Definition at line 39 of file DatabaseMysqli.php.

Member Function Documentation

closeConnection()

Wikimedia\Rdbms\DatabaseMysqli::closeConnection ( )

protected

Returns

bool

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 139 of file DatabaseMysqli.php.

References Wikimedia\Rdbms\Database\$conn, and Wikimedia\Rdbms\DatabaseMysqli\getBindingHandle().

doQuery()

Wikimedia\Rdbms\DatabaseMysqli::doQuery (   $sql )

protected

Parameters

string

$sql

Returns

mysqli_result|bool

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 44 of file DatabaseMysqli.php.

References $res, and Wikimedia\Rdbms\DatabaseMysqli\getBindingHandle().

fetchAffectedRowCount()

Wikimedia\Rdbms\DatabaseMysqli::fetchAffectedRowCount ( )

protected

Returns

int

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 168 of file DatabaseMysqli.php.

References Wikimedia\Rdbms\Database\$conn, and Wikimedia\Rdbms\DatabaseMysqli\getBindingHandle().

getBindingHandle()

Wikimedia\Rdbms\DatabaseMysqli::getBindingHandle ( )

protected

Returns

mysqli

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 306 of file DatabaseMysqli.php.

Referenced by Wikimedia\Rdbms\DatabaseMysqli\closeConnection(), Wikimedia\Rdbms\DatabaseMysqli\doQuery(), Wikimedia\Rdbms\DatabaseMysqli\fetchAffectedRowCount(), Wikimedia\Rdbms\DatabaseMysqli\insertId(), and Wikimedia\Rdbms\DatabaseMysqli\mysqlRealEscapeString().

insertId()

Wikimedia\Rdbms\DatabaseMysqli::insertId

(

)

Returns

int

Implements Wikimedia\Rdbms\IDatabase.

Definition at line 148 of file DatabaseMysqli.php.

References Wikimedia\Rdbms\Database\$conn, and Wikimedia\Rdbms\DatabaseMysqli\getBindingHandle().

lastErrno()

Wikimedia\Rdbms\DatabaseMysqli::lastErrno

(

)

Returns

int

Implements Wikimedia\Rdbms\IDatabase.

Definition at line 157 of file DatabaseMysqli.php.

mysqlConnect()

Wikimedia\Rdbms\DatabaseMysqli::mysqlConnect (   $realServer,   $dbName  )

protected

Parameters

string	$realServer
string | null	$dbName

Returns

mysqli|null

Exceptions

DBConnectionError

Reimplemented from Wikimedia\Rdbms\DatabaseMysqlBase.

Definition at line 58 of file DatabaseMysqli.php.

References Wikimedia\Rdbms\Database\getFlag(), and Wikimedia\Rdbms\Database\newExceptionAfterConnectError().

mysqlDataSeek()

Wikimedia\Rdbms\DatabaseMysqli::mysqlDataSeek (   $res,   $row  )

protected

Parameters

mysqli_result	$res
int	$row

Returns

mixed

Reimplemented from Wikimedia\Rdbms\DatabaseMysqlBase.

Definition at line 276 of file DatabaseMysqli.php.

References $res.

mysqlError()

Wikimedia\Rdbms\DatabaseMysqli::mysqlError (   $conn = null )

protected

Parameters

mysqli | null

$conn

Optional connection object

Returns

string

Reimplemented from Wikimedia\Rdbms\DatabaseMysqlBase.

Definition at line 284 of file DatabaseMysqli.php.

References Wikimedia\Rdbms\Database\$conn.

mysqlFetchArray()

Wikimedia\Rdbms\DatabaseMysqli::mysqlFetchArray (   $res )

protected

Parameters

mysqli_result

$res

Returns

array|false

Reimplemented from Wikimedia\Rdbms\DatabaseMysqlBase.

Definition at line 201 of file DatabaseMysqli.php.

References $res.

mysqlFetchField()

Wikimedia\Rdbms\DatabaseMysqli::mysqlFetchField (   $res,   $n  )

protected

Parameters

mysqli_result	$res
int	$n

Returns

mixed

Reimplemented from Wikimedia\Rdbms\DatabaseMysqlBase.

Definition at line 231 of file DatabaseMysqli.php.

References $res.

mysqlFetchObject()

Wikimedia\Rdbms\DatabaseMysqli::mysqlFetchObject (   $res )

protected

Parameters

mysqli_result

$res

Returns

stdClass|bool

Reimplemented from Wikimedia\Rdbms\DatabaseMysqlBase.

Definition at line 188 of file DatabaseMysqli.php.

References $res.

mysqlFieldName()

Wikimedia\Rdbms\DatabaseMysqli::mysqlFieldName (   $res,   $n  )

protected

Parameters

mysqli_result	$res
int	$n

Returns

mixed

Reimplemented from Wikimedia\Rdbms\DatabaseMysqlBase.

Definition at line 254 of file DatabaseMysqli.php.

References $res.

mysqlFieldType()

Wikimedia\Rdbms\DatabaseMysqli::mysqlFieldType (   $res,   $n  )

protected

Parameters

mysqli_result	$res
int	$n

Returns

mixed

Reimplemented from Wikimedia\Rdbms\DatabaseMysqlBase.

Definition at line 265 of file DatabaseMysqli.php.

References $res.

mysqlFreeResult()

Wikimedia\Rdbms\DatabaseMysqli::mysqlFreeResult (   $res )

protected

Parameters

mysqli_result

$res

Returns

bool

Reimplemented from Wikimedia\Rdbms\DatabaseMysqlBase.

Definition at line 178 of file DatabaseMysqli.php.

References $res.

mysqlNumFields()

Wikimedia\Rdbms\DatabaseMysqli::mysqlNumFields (   $res )

protected

Parameters

mysqli_result

$res

Returns

mixed

Reimplemented from Wikimedia\Rdbms\DatabaseMysqlBase.

Definition at line 222 of file DatabaseMysqli.php.

References $res.

mysqlNumRows()

Wikimedia\Rdbms\DatabaseMysqli::mysqlNumRows (   $res )

protected

Parameters

mysqli_result

$res

Returns

mixed

Reimplemented from Wikimedia\Rdbms\DatabaseMysqlBase.

Definition at line 214 of file DatabaseMysqli.php.

References $res.

mysqlRealEscapeString()

Wikimedia\Rdbms\DatabaseMysqli::mysqlRealEscapeString (   $s )

protected

Escapes special characters in a string for use in an SQL statement.

Parameters

string

$s

Returns

string

Reimplemented from Wikimedia\Rdbms\DatabaseMysqlBase.

Definition at line 297 of file DatabaseMysqli.php.

References Wikimedia\Rdbms\Database\$conn, $s, and Wikimedia\Rdbms\DatabaseMysqli\getBindingHandle().

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The documentation for this class was generated from the following file:

• includes/libs/rdbms/database/DatabaseMysqli.php