The constants below are defined by this extension, and will only be available when the extension has either been compiled into PHP or dynamically loaded at runtime.
ODBC_TYPE
(string) ODBC_BINMODE_PASSTHRU
(int) ODBC_BINMODE_RETURN
(int) ODBC_BINMODE_CONVERT
(int) SQL_ODBC_CURSORS
(int) SQL_CUR_USE_DRIVER
(int) SQL_CUR_USE_IF_NEEDED
(int) SQL_CUR_USE_ODBC
(int) SQL_CONCURRENCY
(int) SQL_CONCUR_READ_ONLY
(int) SQL_CONCUR_LOCK
(int) SQL_CONCUR_ROWVER
(int) SQL_CONCUR_VALUES
(int) SQL_CURSOR_TYPE
(int) SQL_CURSOR_FORWARD_ONLY
(int) SQL_CURSOR_KEYSET_DRIVEN
(int) SQL_CURSOR_DYNAMIC
(int) SQL_CURSOR_STATIC
(int) SQL_KEYSET_SIZE
(int) SQL_CHAR
(int) SQL_VARCHAR
(int) SQL_LONGVARCHAR
(int) SQL_DECIMAL
(int) SQL_NUMERIC
(int) SQL_BIT
(int) SQL_TINYINT
(int) SQL_SMALLINT
(int) SQL_INTEGER
(int) SQL_BIGINT
(int) SQL_REAL
(int) SQL_FLOAT
(int) SQL_DOUBLE
(int) SQL_BINARY
(int) SQL_VARBINARY
(int) SQL_LONGVARBINARY
(int) SQL_DATE
(int) SQL_TIME
(int) SQL_TIMESTAMP
(int) SQL_TYPE_DATE
(int) SQL_TYPE_TIME
(int) SQL_TYPE_TIMESTAMP
(int) SQL_BEST_ROWID
(int) SQL_ROWVER
(int) SQL_SCOPE_CURROW
(int) SQL_SCOPE_TRANSACTION
(int) SQL_SCOPE_SESSION
(int) SQL_NO_NULLS
(int) SQL_NULLABLE
(int) SQL_INDEX_UNIQUE
(int) SQL_INDEX_ALL
(int) SQL_ENSURE
(int) SQL_QUICK
(int)