预定义常量
下列常量由此扩展定义,且仅在此扩展编译入 PHP 或在运行时动态载入时可用。
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MYSQLI_READ_DEFAULT_GROUP
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Read options from the named group from my.cnf or the file specified with
MYSQLI_READ_DEFAULT_FILE
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MYSQLI_READ_DEFAULT_FILE
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Read options from the named option file instead of from my.cnf
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MYSQLI_OPT_CONNECT_TIMEOUT
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Connect timeout in seconds
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MYSQLI_OPT_LOCAL_INFILE
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Enables command LOAD LOCAL INFILE
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MYSQLI_INIT_COMMAND
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Command to execute when connecting to MySQL server. Will automatically be re-executed when reconnecting.
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MYSQLI_CLIENT_SSL
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Use SSL (encrypted protocol). This option should not be set by application programs; it is set internally in the MySQL client library
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MYSQLI_CLIENT_COMPRESS
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Use compression protocol
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MYSQLI_CLIENT_INTERACTIVE
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Allow interactive_timeout seconds (instead of wait_timeout seconds) of inactivity before closing the connection. The client's session wait_timeout variable will be set to the value of the session interactive_timeout variable.
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MYSQLI_CLIENT_IGNORE_SPACE
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Allow spaces after function names. Makes all functions names reserved words.
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MYSQLI_CLIENT_NO_SCHEMA
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Don't allow the db_name.tbl_name.col_name syntax.
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MYSQLI_CLIENT_MULTI_QUERIES
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Allows multiple semicolon-delimited queries in a single mysqli_query() call.
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MYSQLI_STORE_RESULT
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For using buffered resultsets
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MYSQLI_USE_RESULT
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For using unbuffered resultsets
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MYSQLI_ASSOC
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Columns are returned into the array having the fieldname as the array index.
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MYSQLI_NUM
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Columns are returned into the array having an enumerated index.
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MYSQLI_BOTH
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Columns are returned into the array having both a numerical index and the fieldname as the associative index.
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MYSQLI_NOT_NULL_FLAG
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Indicates that a field is defined as NOT NULL
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MYSQLI_PRI_KEY_FLAG
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Field is part of a primary index
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MYSQLI_UNIQUE_KEY_FLAG
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Field is part of a unique index.
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MYSQLI_MULTIPLE_KEY_FLAG
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Field is part of an index.
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MYSQLI_BLOB_FLAG
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Field is defined as BLOB
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MYSQLI_UNSIGNED_FLAG
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Field is defined as UNSIGNED
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MYSQLI_ZEROFILL_FLAG
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Field is defined as ZEROFILL
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MYSQLI_AUTO_INCREMENT_FLAG
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Field is defined as AUTO_INCREMENT
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MYSQLI_TIMESTAMP_FLAG
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Field is defined as TIMESTAMP
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MYSQLI_SET_FLAG
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Field is defined as SET
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MYSQLI_NUM_FLAG
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Field is defined as NUMERIC
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MYSQLI_PART_KEY_FLAG
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Field is part of an multi-index
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MYSQLI_GROUP_FLAG
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Field is part of GROUP BY
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MYSQLI_TYPE_DECIMAL
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Field is defined as DECIMAL
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MYSQLI_TYPE_NEWDECIMAL
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Precision math DECIMAL or NUMERIC field (MySQL 5.0.3 and up)
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MYSQLI_TYPE_BIT
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Field is defined as BIT (MySQL 5.0.3 and up)
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MYSQLI_TYPE_TINY
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Field is defined as TINYINT
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MYSQLI_TYPE_SHORT
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Field is defined as SMALLINT
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MYSQLI_TYPE_LONG
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Field is defined as INT
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MYSQLI_TYPE_FLOAT
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Field is defined as FLOAT
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MYSQLI_TYPE_DOUBLE
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Field is defined as DOUBLE
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MYSQLI_TYPE_NULL
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Field is defined as DEFAULT NULL
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MYSQLI_TYPE_TIMESTAMP
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Field is defined as TIMESTAMP
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MYSQLI_TYPE_LONGLONG
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Field is defined as BIGINT
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MYSQLI_TYPE_INT24
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Field is defined as MEDIUMINT
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MYSQLI_TYPE_DATE
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Field is defined as DATE
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MYSQLI_TYPE_TIME
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Field is defined as TIME
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MYSQLI_TYPE_DATETIME
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Field is defined as DATETIME
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MYSQLI_TYPE_YEAR
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Field is defined as YEAR
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MYSQLI_TYPE_NEWDATE
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Field is defined as DATE
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MYSQLI_TYPE_INTERVAL
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Field is defined as INTERVAL
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MYSQLI_TYPE_ENUM
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Field is defined as ENUM
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MYSQLI_TYPE_SET
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Field is defined as SET
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MYSQLI_TYPE_TINY_BLOB
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Field is defined as TINYBLOB
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MYSQLI_TYPE_MEDIUM_BLOB
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Field is defined as MEDIUMBLOB
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MYSQLI_TYPE_LONG_BLOB
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Field is defined as LONGBLOB
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MYSQLI_TYPE_BLOB
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Field is defined as BLOB
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MYSQLI_TYPE_VAR_STRING
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Field is defined as VARCHAR
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MYSQLI_TYPE_STRING
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Field is defined as STRING
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MYSQLI_TYPE_CHAR
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Field is defined as CHAR
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MYSQLI_TYPE_GEOMETRY
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Field is defined as GEOMETRY
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MYSQLI_NEED_DATA
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More data available for bind variable
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MYSQLI_NO_DATA
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No more data available for bind variable
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MYSQLI_DATA_TRUNCATED
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Data truncation occurred. Available since PHP 5.1.0 and MySQL 5.0.5.
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MYSQLI_ENUM_FLAG
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Field is defined as ENUM. Available since PHP 5.3.0.
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MYSQLI_CURSOR_TYPE_FOR_UPDATE
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MYSQLI_CURSOR_TYPE_NO_CURSOR
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MYSQLI_CURSOR_TYPE_READ_ONLY
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MYSQLI_CURSOR_TYPE_SCROLLABLE
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MYSQLI_STMT_ATTR_CURSOR_TYPE
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MYSQLI_STMT_ATTR_PREFETCH_ROWS
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MYSQLI_STMT_ATTR_UPDATE_MAX_LENGTH
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MYSQLI_SET_CHARSET_NAME
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MYSQLI_REPORT_INDEX
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Report if no index or bad index was used in a query.
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MYSQLI_REPORT_ERROR
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Report errors from mysqli function calls.
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MYSQLI_REPORT_STRICT
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Throw a mysqli_sql_exception for errors instead of warnings.
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MYSQLI_REPORT_ALL
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Set all options on (report all).
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MYSQLI_REPORT_OFF
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Turns reporting off.
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MYSQLI_DEBUG_TRACE_ENABLED
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Is set to 1 if mysqli_debug() functionality is enabled.
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MYSQLI_SERVER_QUERY_NO_GOOD_INDEX_USED
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MYSQLI_SERVER_QUERY_NO_INDEX_USED
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MYSQLI_REFRESH_GRANT
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Refreshes the grant tables.
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MYSQLI_REFRESH_LOG
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Flushes the logs, like executing the FLUSH LOGS SQL statement.
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MYSQLI_REFRESH_TABLES
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Flushes the table cache, like executing the FLUSH TABLES SQL statement.
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MYSQLI_REFRESH_HOSTS
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Flushes the host cache, like executing the FLUSH HOSTS SQL statement.
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MYSQLI_REFRESH_STATUS
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Reset the status variables, like executing the FLUSH STATUS SQL statement.
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MYSQLI_REFRESH_THREADS
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Flushes the thread cache.
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MYSQLI_REFRESH_SLAVE
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On a slave replication server: resets the master server information, and restarts the slave. Like executing the RESET SLAVE SQL statement.
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MYSQLI_REFRESH_MASTER
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On a master replication server: removes the binary log files listed in the binary log index, and truncates the index file. Like executing the RESET MASTER SQL statement.