Questionnaires about PHP. This latest version includes a module, which allows the student Write the reasons why you chose an answer to any question. Each menu option includes documentation that covers the topics of that option and the questionnaires are designed as a way to review the concepts studied. This way you will learn new important aspects of the PHP language. Once you have finished answering the questionnaire, the system allows you to see if the answers you chose were correct. A new option was added to the main menu where you can study the functions that handle character strings and also develop exercises on the subject, answering the questionnaire associated with the option. The theme that the user will find and can learn in the questionnaires is: PHP basics, Functions and parameters by value and reference, Recursive functions in PHP, Arrays, Functions for handling strings in PHP Object-oriented programming, SQL and MySql databases, Elimination and updating of databases, The UNION, ALTER, AVG, Functions that create and manage images in PHP Entity Relationship Model Entity Relationship Programming Regular expressions in PHP To correctly answer the questionnaires, the following topics should be reviewed: Management of arrangements, Handling of character strings, File management, Database management Management of relational databases. (Two entities and the entity that relates them). Mathematical functions The functions for drawing images, Recursive functions Regular expressions