Advantages of PHP training: If the training institutions are reliable, the learning time cost will be shorter (fewer reliable training institutions and less responsible teachers) and the learning atmosphere will be better (depending on the class management ability of teachers).
Disadvantages: most training institutions are unreliable, the training fees are expensive, and the soft power cannot be improved.
Advantages of PHP self-study: improve self-study ability, research technical ability, problem-solving ability and self-control ability.
Disadvantages: the learning time cost will be higher (as long as the video course or books are good, the learning time cost will not be so big)
In short, think carefully before making a choice, and don't blindly follow the trend ~ ~