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 ()
	Get the inserted value of an auto-increment row.
	lastErrno ()
Public Member Functions inherited from Wikimedia\Rdbms\DatabaseMysqlBase
	__construct (array $params)
	Additional $params include:
	doLock (string $lockName, string $method, int $timeout)
	doLockIsFree (string $lockName, string $method)
	doUnlock (string $lockName, string $method)
	duplicateTableStructure ( $oldName, $newName, $temporary=false, $fname=__METHOD__)
	estimateRowCount ( $tables, $var=' *', $conds='', $fname=__METHOD__, $options=[], $join_conds=[])
	Estimate rows in dataset Returns estimated count, based on EXPLAIN output Takes same arguments as Database::select()
	fieldInfo ( $table, $field)
	getPrimaryPos ()
	Get the position of the primary DB from SHOW MASTER STATUS.
	getReplicaPos ()
	Get the position of the primary DB from SHOW SLAVE STATUS.
	getServerVersion ()
	getSoftwareLink ()
	getTopologyBasedServerId ()
	Get a non-recycled ID that uniquely identifies this server within the replication topology.A replication topology defines which servers can originate changes to a given dataset and how those changes propagate among database servers. It is assumed that the server only participates in the replication of a single relevant dataset. Returns string|null 32, 64, or 128 bit integer ID; null if not applicable or unknown Exceptions DBQueryError Since 1.37
	getType ()
	indexInfo ( $table, $index, $fname=__METHOD__)
	Get information about an index into an object Returns false if the index does not exist.
	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.
	namedLocksEnqueue ()
	Check to see if a named lock used by lock() use blocking queues. Returns bool Since 1.26 Stability: stable to override
	primaryPosWait (DBPrimaryPos $pos, $timeout)
	Wait for the replica DB to catch up to a given primary DB 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 DBPrimaryPos $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 also query} Since 1.37 Since 1.37 Stability: stable to override
	selectSQLText ( $table, $vars, $conds='', $fname=__METHOD__, $options=[], $join_conds=[])
	Take the same arguments as IDatabase::select() and return the SQL it would use.
	serverIsReadOnly ()
	Returns bool Whether the DB is marked as read-only server-side Exceptions DBError If an error occurs, { See also query} Since 1.28 Stability: stable to override
	setBigSelects ( $value=true)
	setSessionOptions (array $options)
	streamStatementEnd (&$sql, &$newLine)
	strencode ( $s)
	tableExists ( $table, $fname=__METHOD__)
	Query whether a given table exists.
	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 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.
	addIdentifierQuotes ( $s)
	Escape a SQL identifier (e.g.
	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
	affectedRows ()
	Get the number of rows affected by the last write query.
	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.
	begin ( $fname=__METHOD__, $mode=self::TRANSACTION_EXPLICIT)
	Begin a transaction.
	bitAnd ( $fieldLeft, $fieldRight)
	bitNot ( $field)
	bitOr ( $fieldLeft, $fieldRight)
	buildConcat ( $stringList)
	Build a concatenation list to feed into a SQL query.
	buildExcludedValue ( $column)
	Build a reference to a column value from the conflicting proposed upsert() row.
	buildGreatest ( $fields, $values)
	Build a GREATEST function statement comparing columns/values.
	buildGroupConcatField ( $delim, $table, $field, $conds='', $join_conds=[])
	Build a GROUP_CONCAT or equivalent statement for a query.
	buildIntegerCast ( $field)
	buildLeast ( $fields, $values)
	Build a LEAST function statement comparing columns/values.
	buildLike ( $param,... $params)
	LIKE statement wrapper.
	buildSelectSubquery ( $table, $vars, $conds='', $fname=__METHOD__, $options=[], $join_conds=[])
	Equivalent to IDatabase::selectSQLText() except wraps the result in Subquery.
	buildStringCast ( $field)
	buildSubstring ( $input, $startPosition, $length=null)
	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__)
	Close the database connection.
	commit ( $fname=__METHOD__, $flush=self::FLUSHING_ONE)
	Commits a transaction previously started using begin()
	conditional ( $cond, $caseTrueExpression, $caseFalseExpression)
	Returns an SQL expression for a simple conditional.
	connectionErrorLogger ( $errno, $errstr)
	Error handler for logging errors during database connection.
	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
	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
	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
	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.
	deleteJoin ( $delTable, $joinTable, $delVar, $joinVar, $conds, $fname=__METHOD__)
	Delete all rows in a table that match a condition which includes a join.For safety, an empty $conds will not delete everything. If you want to delete all rows where the join condition matches, set $conds=IDatabase::ALL_ROWS.DO NOT put the join condition in $conds. Parameters string $delTable The table to delete from. string $joinTable The other table. string $delVar The variable to join on, in the first table. string $joinVar The variable to join on, in the second table. array | string $conds Condition array of field names mapped to variables, ANDed together in the WHERE clause string $fname Calling function name (use METHOD) for logs/profiling Exceptions DBError If an error occurs, { See also query}
	doAtomicSection ( $fname, callable $callback, $cancelable=self::ATOMIC_NOT_CANCELABLE)
	Perform an atomic section of reversible 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
	encodeExpiry ( $expiry)
	Encode an expiry time into the DBMS dependent format.
	endAtomic ( $fname=__METHOD__)
	Ends an atomic section of SQL statements.
	explicitTrxActive ()
	Check whether there is a transaction open at the specific request of a caller.
	factorConds ( $condsArray)
	Given an array of condition arrays representing an OR list of AND lists, for example:
	fieldExists ( $table, $field, $fname=__METHOD__)
	Determines whether a field exists in a table.
	flushSession ( $fname=__METHOD__, $flush=self::FLUSHING_ONE)
	Release important session-level state (named lock, table locks) as post-rollback cleanup.
	flushSnapshot ( $fname=__METHOD__, $flush=self::FLUSHING_ONE)
	Commit any transaction but error out if writes or callbacks are pending.
	getDBname ()
	Get the current database name; null if there isn't one.
	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.
	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 hostname or IP address of the server.
	getServerInfo ()
	Get a human-readable string describing the current software version.
	getServerName ()
	Get the readable name for the server.
	getSessionLagStatus ()
	Get the replica DB lag when the current transaction started or a general lag estimate if not transaction is active.
	getTableAliases ()
	Return current table aliases.
	getTopologyRole ()
	Get the replication topology role of this server.
	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.
	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
	initConnection ()
	Initialize the connection to the database over the wire (or to local files)
	insert ( $table, $rows, $fname=__METHOD__, $options=[])
	Insert row(s) into a table, in the provided order.
	insertSelect ( $destTable, $srcTable, $varMap, $conds, $fname=__METHOD__, $insertOptions=[], $selectOptions=[], $selectJoinConds=[])
	INSERT SELECT wrapper.
	isOpen ()
	isQuotedIdentifier ( $name)
	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.
	lock ( $lockName, $method, $timeout=5, $flags=0)
	Acquire a named lock.Named locks are not related to transactions Parameters string $lockName Name of lock to acquire string $method Name of the calling method int $timeout Acquisition timeout in seconds (0 means non-blocking) int $flags Bit field of IDatabase::LOCK_* constants Returns bool|float|null Success (bool); acquisition time (float/null) if LOCK_TIMESTAMP Exceptions DBError If an error occurs, { See also query}
	lockForUpdate ( $table, $conds='', $fname=__METHOD__, $options=[], $join_conds=[])
	Lock all rows meeting the given conditions/options FOR UPDATE.
	lockIsFree ( $lockName, $method)
	Check to see if a named lock is not locked by any thread (non-blocking) Parameters string $lockName Name of lock to poll string $method Name of method calling us Returns bool Exceptions DBError If an error occurs, { See also query} Since 1.20
	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.
	newSelectQueryBuilder ()
	Get a SelectQueryBuilder bound to this connection.
	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 when the current transaction commits or now if there is none.
	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 when the current transaction commits or rolls back.
	pendingWriteAndCallbackCallers ()
	pendingWriteCallers ()
	Get the list of method names that did write queries for this transaction.
	pendingWriteQueryDuration ( $type=self::ESTIMATE_TOTAL)
	Get the time spend running write queries for this transaction.
	ping (&$rtt=null)
	Ping the server and try to reconnect if it there is no connection.
	query ( $sql, $fname=__METHOD__, $flags=0)
	Run an SQL query statement and return the result.
	queryMulti (array $sqls, string $fname=__METHOD__, int $flags=0, ?string $summarySql=null)
	Run a batch of SQL query statements and return the results.
	replace ( $table, $uniqueKeys, $rows, $fname=__METHOD__)
	Insert row(s) into a table, in the provided order, while deleting conflicting rows.
	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 ( $trigger, array &$errors=[])
	Consume and run any "on transaction idle/resolution" callbacks.
	runOnTransactionPreCommitCallbacks ()
	runTransactionListenerCallbacks ( $trigger, array &$errors=[])
	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.
	sessionLocksPending ()
	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.
	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.
	setTransactionListener ( $name, callable $callback=null)
	Run a callback after each time any transaction commits or rolls back.
	setTransactionManager (TransactionManager $transactionManager)
	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.
	tableName ( $name, $format='quoted')
	Format a table name ready for use in constructing an SQL query.
	tableNames (... $tables)
	Fetch a number of table names into an associative array.
	tableNamesN (... $tables)
	Fetch a number of table names into a zero-indexed numerical array.
	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
	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.
	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.
	unionSupportsOrderAndLimit ()
	Determine if the RDBMS supports ORDER BY and LIMIT for separate subqueries within UNION.
	unlock ( $lockName, $method)
	Release a lock.Named locks are not related to transactions Parameters string $lockName Name of lock to release string $method Name of the calling method Returns bool Success Exceptions DBError If an error occurs, { See also query}
	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 row(s) into a table, in the provided order, while updating conflicting rows.
	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
	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\Platform\ISQLPlatform
	buildSubString ( $input, $startPosition, $length=null)
	Build a SUBSTRING function.

Protected Member Functions
	closeConnection ()
	Closes underlying database connection.
	doMultiStatementQuery (array $sqls)
	Execute a batch of query statements, aborting remaining statements if one fails.
	doSingleStatementQuery (string $sql)
	Run a query and return a QueryStatus instance with the query result information.
	fetchAffectedRowCount ()
	getBindingHandle ()
	mysqlConnect ( $server, $user, $password, $db)
	mysqlError ( $conn=null)
	mysqlRealEscapeString ( $s)
	Escape special characters in a string for use in an SQL statement.
Protected Member Functions inherited from Wikimedia\Rdbms\DatabaseMysqlBase
	doFlushSession ( $fname)
	Reset the server-side session state for named locks and table locks.
	doGetLag ()
	Get the amount of replication lag for this database server.
	doReplace ( $table, array $identityKey, array $rows, $fname)
	doSelectDomain (DatabaseDomain $domain)
	doUpsert (string $table, array $rows, array $identityKey, array $set, string $fname)
	Perform an UPSERT query.
	fetchSecondsSinceHeartbeat (array $conds)
	getApproximateLagStatus ()
	Get a replica DB lag estimate for this server at the start of a transaction.
	getLagDetectionMethod ()
	getLagFromPtHeartbeat ()
	getLagFromSlaveStatus ()
	getMySqlServerVariant ()
	getReplicationSafetyInfo ()
	getServerGTIDs ( $fname=__METHOD__)
	getServerId ()
	getServerRoleStatus ( $role, $fname=__METHOD__)
	getServerUUID ()
	getSourceServerInfo ()
	Get information about the direct replication source server for this replica server.
	isConnectionError ( $errno)
	Do not use this method outside of Database/DBError classes.
	isInsertSelectSafe (array $insertOptions, array $selectOptions)
	isKnownStatementRollbackError ( $errno)
	isQueryTimeoutError ( $errno)
	Checks whether the cause of the error is detected to be a timeout.
	open ( $server, $user, $password, $db, $schema, $tablePrefix)
	Open a new connection to the database (closing any existing one)
	useGTIDs ()
Protected Member Functions inherited from Wikimedia\Rdbms\Database
	assertHasConnectionHandle ()
	Make sure there is an open connection handle (alive or not)
	assertIsWritablePrimary ()
	Make sure that this server is not marked as a replica nor read-only.
	commenceCriticalSection (string $fname)
	Demark the start of a critical section of session/transaction state changes.
	completeCriticalSection (string $fname, ?CriticalSectionScope $csm, Throwable $trxError=null)
	Demark the completion of a critical section of session/transaction state changes.
	doBegin ( $fname)
	Issues the BEGIN command to the database server.
	doCommit ( $fname)
	Issues the COMMIT command to the database server.
	doHandleSessionLossPreconnect ()
	Reset any additional subclass trx* and session* fields.
	doInitConnection ()
	Actually connect to the database over the wire (or to local files)
	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.
	doTruncate (array $tables, $fname)
	executeQuery ( $sqls, $fname, $flags, $summarySql)
	Execute a set of queries without enforcing public (non-Database) caller restrictions.
	fieldHasBit (int $flags, int $bit)
	getLastPHPError ()
	getLogContext (array $extras=[])
	Create a log context to pass to PSR-3 logger functions.
	getReadOnlyReason ()
	getRecordedTransactionLagStatus ()
	Get the replica DB lag when the current transaction started.
	getTempTableWrites ( $sql, $pseudoPermanent)
	getTransactionRoundId ()
	indexName ( $index)
	installErrorHandler ()
	Set a custom error handler for logging errors during database connection.
	isPristineTemporaryTable ( $table)
	Check if the table is both a TEMPORARY table and has not yet received CRUD operations.
	newExceptionAfterConnectError ( $error)
	registerTempWrites ( $ret, array $changes)
	replaceLostConnection ( $lastErrno, $fname)
	Close any existing (dead) database connection and open a new connection.
	restoreErrorHandler ()
	Restore the previous error handler and return the last PHP error for this DB.

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	getAttributes ()
static	getCacheSetOptions (?IDatabase ... $dbs)
	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.
Public Attributes inherited from Wikimedia\Rdbms\IDatabase
const	LOCK_TIMESTAMP = 1
	Flag to return the lock acquisition timestamp (null if not acquired)
Public Attributes inherited from Wikimedia\Rdbms\Platform\ISQLPlatform
const	QUERY_PSEUDO_PERMANENT = 2
	Track a TEMPORARY table CREATE as if it was for a permanent table (for testing)
Protected Attributes inherited from Wikimedia\Rdbms\DatabaseMysqlBase
bool null	$defaultBigSelects
string	$lagDetectionMethod
	Method to detect replica DB lag.
array	$lagDetectionOptions = []
	Method to detect replica DB lag.
MySQLPrimaryPos	$lastKnownReplicaPos
ISQLPlatform	$platform
string null	$sslCAFile
string null	$sslCAPath
string null	$sslCertPath
string null	$sslCiphers
	Open SSL cipher list string.
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
int 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< string, mixed >	$connectionParams
	Connection parameters used by initConnection() and open()
string[] int[] float[]	$connectionVariables
	SQL variables values to use for all new connections.
LoggerInterface	$connLogger
CriticalSectionProvider null	$csProvider
DatabaseDomain	$currentDomain
string false	$delimiter = ';'
	Current SQL query delimiter.
callable	$deprecationLogger
	Deprecation logging callback.
callable	$errorLogger
	Error logging callback.
int	$flags
	Current bit field of class DBO_* constants.
array	$lbInfo = []
	Current LoadBalancer tracking information.
int	$nonNativeInsertSelectBatchSize
	Row batch size to use for emulated INSERT SELECT queries.
string null	$password
	Password used to establish the current connection.
SQLPlatform	$platform
callable null	$profiler
LoggerInterface	$queryLogger
LoggerInterface	$replLogger
string null	$server
	Server that this instance is currently connected to.
string null	$serverName
	Readable name or host/IP of the database server.
array< string, array >	$sessionNamedLocks = []
	Map of (name => (UNIX time,trx ID)) for current lock() mutexes.
array< string, array >	$sessionTempTables = []
	Map of (name => (type,pristine,trx ID)) for current temp tables.
BagOStuff	$srvCache
	APC cache.
bool	$ssl
	Whether to use SSL connections.
IDatabase	$topologicalPrimaryConnRef
	Lazy handle to the most authoritative primary server for the dataset.
string	$topologyRole
	Replication topology role of the server; one of the class ROLE_* constants.
string null	$user
	User that this instance is currently connected under the name of.
const	CONN_HOST = 'host'
	Hostname or IP address to use on all connections.
const	CONN_INITIAL_DB = 'dbname'
	Database name to use on initial connection.
const	CONN_INITIAL_SCHEMA = 'schema'
	Schema name to use on initial connection.
const	CONN_INITIAL_TABLE_PREFIX = 'tablePrefix'
	Table prefix to use on initial connection.
const	CONN_PASSWORD = 'password'
	Database server password to use on all connections.
const	CONN_USER = 'user'
	Database server username to use on all connections.
const	DROPPED_CONN_BLAME_THRESHOLD_SEC = 3.0
	Assume that queries taking this long to yield connection loss errors are at fault.
const	ERR_ABORT_QUERY = 2
	Abort query (no retries) due to a statement rollback (session/transaction intact)
const	ERR_ABORT_SESSION = 8
	Abort and reset session due to server-side session-level state loss (locks, temp tables)
const	ERR_ABORT_TRX = 4
	Abort any current transaction, by rolling it back, due to an error during the query.
const	ERR_NONE = 0
	No errors occurred during the query.
const	ERR_RETRY_QUERY = 1
	Retry query due to a connection loss detected while sending the query (session intact)

Detailed Description

Database abstraction object for PHP extension mysqli.

TODO: This could probably be merged with DatabaseMysqlBase. The split was created to support a transition from the old "mysql" extension to mysqli, and there may be an argument for retaining it in order to support some future transition to something else, but it's complexity and YAGNI.

Since

1.22

See also

Database

Definition at line 39 of file DatabaseMysqli.php.

Member Function Documentation

closeConnection()

Wikimedia\Rdbms\DatabaseMysqli::closeConnection ( )

protected

Closes underlying database connection.

Returns

bool Whether connection was closed successfully

Since

1.20

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 182 of file DatabaseMysqli.php.

doMultiStatementQuery()

Wikimedia\Rdbms\DatabaseMysqli::doMultiStatementQuery ( array $sqls )

protected

Execute a batch of query statements, aborting remaining statements if one fails.

See also

Database::doQuery()

Stability: stable

to override

Parameters

string[]

$sqls

Non-empty map of (statement ID => SQL statement)

Returns

array<string,QueryStatus> Map of (statement ID => QueryStatus)

Since

1.39

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 53 of file DatabaseMysqli.php.

doSingleStatementQuery()

Wikimedia\Rdbms\DatabaseMysqli::doSingleStatementQuery ( string $sql )

protected

Run a query and return a QueryStatus instance with the query result information.

This is meant to handle the basic command of actually sending a query to the server via the driver. No implicit transaction, reconnection, nor retry logic should happen here. The higher level query() method is designed to handle those sorts of concerns. This method should not trigger such higher level methods.

The lastError() and lastErrno() methods should meaningfully reflect what error, if any, occurred during the last call to this method. Methods like executeQuery(), query(), select(), insert(), update(), delete(), and upsert() implement their calls to doQuery() such that an immediately subsequent call to lastError()/lastErrno() meaningfully reflects any error that occurred during that public query method call.

For SELECT queries, the result field contains either:

• a) A driver-specific IResultWrapper describing the query results
• b) False, on any query failure

For non-SELECT queries, the result field contains either:

• a) A driver-specific IResultWrapper, only on success
• b) True, only on success (e.g. no meaningful result other than "OK")
• c) False, on any query failure

Parameters

string

$sql

Single-statement SQL query

Returns

QueryStatus

Since

1.39

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 40 of file DatabaseMysqli.php.

fetchAffectedRowCount()

Wikimedia\Rdbms\DatabaseMysqli::fetchAffectedRowCount ( )

protected

Returns

int Number of retrieved rows according to the driver

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 205 of file DatabaseMysqli.php.

getBindingHandle()

Wikimedia\Rdbms\DatabaseMysqli::getBindingHandle ( )

protected

Returns

mysqli

Reimplemented from Wikimedia\Rdbms\Database.

Definition at line 232 of file DatabaseMysqli.php.

insertId()

Wikimedia\Rdbms\DatabaseMysqli::insertId

(

)

Get the inserted value of an auto-increment row.

This should only be called after an insert that used an auto-incremented value. If no such insert was previously done in the current database session, the return value is undefined.

Returns

int

Implements Wikimedia\Rdbms\IDatabase.

Definition at line 188 of file DatabaseMysqli.php.

lastErrno()

Wikimedia\Rdbms\DatabaseMysqli::lastErrno

(

)

Returns

int

Implements Wikimedia\Rdbms\IDatabase.

Definition at line 197 of file DatabaseMysqli.php.

mysqlConnect()

Wikimedia\Rdbms\DatabaseMysqli::mysqlConnect ( $server, $user, $password, $db )

protected

Parameters

string | null	$server
string | null	$user
string | null	$password
string | null	$db

Returns

mysqli|null

Exceptions

DBConnectionError

Reimplemented from Wikimedia\Rdbms\DatabaseMysqlBase.

Definition at line 111 of file DatabaseMysqli.php.

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 215 of file DatabaseMysqli.php.

mysqlRealEscapeString()

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

protected

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

Parameters

string

$s

Returns

mixed

Reimplemented from Wikimedia\Rdbms\DatabaseMysqlBase.

Definition at line 223 of file DatabaseMysqli.php.

References $s.

---

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

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