Home > Article > Backend Development > Third party liability insurance compensation scope PHP scope analysis operator:: meaning analysis explanation
I saw several symbols related to PHP today. One is @, which is added in front of a variable to suppress the PHP interpreter from reporting errors, which means that even if an error occurs, it will not be displayed.
There is also a more important symbol PHP's range resolution operator (::)
It is useful to access functions in a class or functions and variables in a base class without declaring any instances. And the :: operator is used in this case.
Copy code The code is as follows:
class A {
function example() {
echo "I am the original function A::example().
n ";
}
}
class B extends A {
function example() {
echo "I am the redefined function B::example().
n";
A::example();
}
}
// Class A has no objects, this will output
// I am the original function A::example().
A::example();
// Create a B Object of class
$b = new B;
// This will output
// I am the redefined function B::example().
// I am the original function A::example( ).
$b->example();
?>
The above introduces the scope of third-party liability insurance compensation and the analysis and explanation of the meaning of PHP's scope analysis operator::, including the content of the scope of compensation for third-party liability insurance. I hope it will be helpful to friends who are interested in PHP tutorials.