Due to an epidemic at the beginning of this year, all New Year plans were disrupted. Due to some previous reasons, I planned to start to further understand and learn website programming. After a long search process, I finally came to the PHP Chinese website by chance. Since then, I have started a hard time of self-learning and ability improvement in programming. After more than half a year of study and practice, I have grown from a website programming student Bai can finally understand some simple PHP programming language! During the learning process, I found that the more I studied, the more I was deeply shocked by the breadth and depth of programming languages! !