Java software engineer php-12. variable scope

Java programmers learn php-12. variable scope 1. php has a more "file" scope than java (the official name is "global scope", which is valid in the current php file ), that is, the scope of the variables written in the PHP file but independent of any function. this is similar to the full java programmer defined in javascript to learn php-12. variable scope
1. php has a more "file" scope than java (the official name is "global scope", which is valid in the current php file ), that is, the scope of the variables written in the PHP file but independent of any function. this is a bit like the global variables defined in javascript, but in php, functions cannot access such variables.

2. what is the scope of the variables in the file contained by require? If you call require () in a function, the variable scope in the contained file is the current function; otherwise, it is the global scope.