Estas constantes están definidas por esta extensión y estarán disponibles sólo cuando la extensión haya sido compilada con PHP, o bien sea cargada dinámicamente en ejecución.
The following opcodes are defined as constants by uopz:
ZEND_EXIT
     (integer)
    TRUE to exit, FALSE to continue
     
    ZEND_NEW
     (integer)
    ZEND_THROW
     (integer)
    ZEND_FETCH_CLASS
     (integer)
    ZEND_ADD_TRAIT
     (integer)
    ZEND_ADD_INTERFACE
     (integer)
    ZEND_INSTANCEOF
     (integer)
    The following constants control the VM's behaviour after a user handler is invoked, be extremely careful!
ZEND_USER_OPCODE_CONTINUE
     (integer)
    ZEND_USER_OPCODE_ENTER
     (integer)
    ZEND_USER_OPCODE_LEAVE
     (integer)
    ZEND_USER_OPCODE_DISPATCH
     (integer)
    ZEND_USER_OPCODE_DISPATCH_TO
     (integer)
    ZEND_USER_OPCODE_RETURN
     (integer)
    The following modifiers are registered as constants by uopz
ZEND_ACC_PUBLIC
     (integer)
    ZEND_ACC_PROTECTED
     (integer)
    ZEND_ACC_PRIVATE
     (integer)
    ZEND_ACC_STATIC
     (integer)
    ZEND_ACC_FINAL
     (integer)
    ZEND_ACC_ABSTRACT
     (integer)
    ZEND_ACC_CLASS
     (integer)
    ZEND_ACC_INTERFACE
     (integer)
    ZEND_ACC_TRAIT
     (integer)
    ZEND_ACC_FETCH
     (integer)