Note : The variable's value can not be a keyword (e.g. It is a variable qualifier that modifies the behavior of the variable, making a variable " read-only ". Class constants are case-sensitive. const is a highly overused qualifier in C++: the syntax and ordering is often not straightforward in combination with pointers. C 언어에서: const keyword로 선언한 const qualified identifier는, constant expression이 아닙니다. Note: The PHP 4 method of declaring a variable with the var keyword is still supported for compatibility reasons (as a synonym for the public keyword). PHP - Class Constants. Class constants can be useful if you need to define some constant data within a class. 그리고 어떤 역할을하는 수행 public , protected 그리고 private 놀이 - 어떤 경우에? 클래스의 맥락.. This means that the variable can be used just as any other variable of its type, but its value cannot be changed. The const keyword stands for constant. As of PHP 5.3 there are two ways to define constants: Either using the const keyword or using the define() function: const FOO = 'BAR' ; define( 'FOO' , 'BAR' ); 즉, 배열 선언에서 크기를 지정할 때*, switch ()의 case label 등으로 쓰일 …

개념으로 생각하면 될듯하다. 언제 각각 적절한가요?

의 차이점은 무엇 입니까? A class constant is declared inside a class with the const keyword. 상수(Constant)는 변수의 반대(?)

C 프로그래밍 const (상수) 에 대하여 . Constants cannot be changed once it is declared. PHP 5 : const 대 정적 PHP 5에서 using const 과 static ? The above usage of const only applies when adding const to the end of the function declaration after the parenthesis. Declaring a constant in php Constant's scope is global and can be accessed using a self keyword self, parent and static). However, it is recommended to name the constants in all uppercase letters. 즉 변수는 상황에 따라 그 값이 변경가능하지만 상수인 const 로 지정을 하면 그 값을 '절대로' 바꿀수 없다.. 또한 변수와는 달리, 처음 상수를 정의할 때 값을 지정해 주어야 한다. In PHP 5 before 5.1.3, its usage would generate an E_STRICT warning. Some readings about const correctness and the const keyword: Const correctness