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 
    (integer)
   ODBC_BINMODE_PASSTHRU 
    (integer)
   ODBC_BINMODE_RETURN 
    (integer)
   ODBC_BINMODE_CONVERT 
    (integer)
   SQL_ODBC_CURSORS 
    (integer)
   SQL_CUR_USE_DRIVER 
    (integer)
   SQL_CUR_USE_IF_NEEDED 
    (integer)
   SQL_CUR_USE_ODBC 
    (integer)
   SQL_CONCURRENCY 
    (integer)
   SQL_CONCUR_READ_ONLY 
    (integer)
   SQL_CONCUR_LOCK 
    (integer)
   SQL_CONCUR_ROWVER 
    (integer)
   SQL_CONCUR_VALUES 
    (integer)
   SQL_CURSOR_TYPE 
    (integer)
   SQL_CURSOR_FORWARD_ONLY 
    (integer)
   SQL_CURSOR_KEYSET_DRIVEN 
    (integer)
   SQL_CURSOR_DYNAMIC 
    (integer)
   SQL_CURSOR_STATIC 
    (integer)
   SQL_KEYSET_SIZE 
    (integer)
   SQL_CHAR 
    (integer)
   SQL_VARCHAR 
    (integer)
   SQL_LONGVARCHAR 
    (integer)
   SQL_DECIMAL 
    (integer)
   SQL_NUMERIC 
    (integer)
   SQL_BIT 
    (integer)
   SQL_TINYINT 
    (integer)
   SQL_SMALLINT 
    (integer)
   SQL_INTEGER 
    (integer)
   SQL_BIGINT 
    (integer)
   SQL_REAL 
    (integer)
   SQL_FLOAT 
    (integer)
   SQL_DOUBLE 
    (integer)
   SQL_BINARY 
    (integer)
   SQL_VARBINARY 
    (integer)
   SQL_LONGVARBINARY 
    (integer)
   SQL_DATE 
    (integer)
   SQL_TIME 
    (integer)
   SQL_TIMESTAMP 
    (integer)
   SQL_TYPE_DATE 
    (integer)
   SQL_TYPE_TIME 
    (integer)
   SQL_TYPE_TIMESTAMP 
    (integer)
   SQL_BEST_ROWID 
    (integer)
   SQL_ROWVER 
    (integer)
   SQL_SCOPE_CURROW 
    (integer)
   SQL_SCOPE_TRANSACTION 
    (integer)
   SQL_SCOPE_SESSION 
    (integer)
   SQL_NO_NULLS 
    (integer)
   SQL_NULLABLE 
    (integer)
   SQL_INDEX_UNIQUE 
    (integer)
   SQL_INDEX_ALL 
    (integer)
   SQL_ENSURE 
    (integer)
   SQL_QUICK 
    (integer)