difference between local and global variables with examples

What is a global variable? A global variable, also known as an external variable, is defined outside the function and is scoped to the end of the program file, starting at the definition of the variable. Unlike other programming languages, global

The essential difference between a global variable and a local variable is the scopeTo be understood in layman's words,Global variables are declared throughout the py file and can be accessed at the global scopeA local variable is declared in a

One, Angle analysis:Variable scope-------> Local variables and global variablesLifetime of variable existence---------> static storage mode and dynamic storage modeSecond, local variables:Local variables are also known as internal variables. A local

The difference between the two-segment JS code:  I think it's easy, isn't it the scope of global variables and local variables? I said, "When a global variable has the same name as a local variable, the scope of the

The difference between the two-segment JS code: "When a global variable has the same name as a local variable, the scope of the local variable overrides the scope of the global variable, and when it leaves the scope of the local variable, it

The difference between static and normal variables in PHP Adding static to the front of a variable constitutes a statically variable The difference between a static variable and a normal variable is that the scope of a non-static global variable

Difference between global variables and $ GLOBALS [] in PHP. I. Example 1: Copy the code as follows :? Php $ var11; functiontest () {unset ($ GLOBALS [var1]);} test (); echo $ var1 ;? Because $ var1 is deleted, so what? 1. Comparison of examples

Adding static to the front of a variable constitutes a statically variable The difference between a static variable and a normal variable is that the scope of a non-static global variable is the entire source program, and when a source program is

Data members can be divided into static variables, non-static variables. This article mainly describes the PHP static member variables and non-static member variables, the need for friends can refer to the following Data members can be divided into

$ GLOBALS [var] is an external global variable, and global $ var is an external reference or pointer with the same name as $ var. 1. Comparison of examples Example 1: The code is as follows: $ Var1 = 1;Function test (){Unset ($ GLOBALS ['var1']