Philippines and Indonesia are known for being strict. AirAsia can be strict especially if you draw the wrong check-in clerk. Your ticket out of BKK is not going to be any help at all in Manila.
Truth is, anywhere anytime can suddenly become a problem so you have to have in mind a back up, keeping in mind that the two countries I mentioned apart, the problem is almost always at check-in.
A lot depends on how you handle it. Sweet-talking the check-in clerk can be effective. If push comes to shove, you can offer to sign an indemnity, in which you agree to bear all expense if there's a problem with immigration on arrival. Not all carriers accept this, though.