New features of modern PHP series (1) -- namespace
1. what is a namespace?
If you only need to know one of the modern PHP features, it should be a namespace. Namespace is introduced in PHP5.3.0 to organize PHP code based on a virtual hierarchy,
For the namespace, the official documentation has already been very detailed [view]. I have made some practical and summary here.
The most explicit purpose of a namespace is to solve the problem of duplicate names. In PHP, two functions or classes
PHPnamespace is used to solve the scope problem in large PHP libraries (libraries), in PHP, all class definitions are global, so when a library author creates multiple applications or public API classes for this library, He must be aware of the
Summary of the usage of namespace and use in the PHP Command Space, namespaceuse
The most explicit purpose of a namespace is to solve the problem of duplicate names. In PHP, two functions or classes cannot have the same name. Otherwise, a fatal
Namespace Chinese meaning is a namespace or name space, the traditional C + + has only a global namespace, but because of the scale of the current program, the division of the program more and more thin, the global scope becomes more and more
Here we go. Start with the Linux namespace first.Brief introductionLinux namespace is a method of kernel-level environmental isolation provided by Linux. I don't know if you remember a long time ago Unix has a system call called chroot (by modifying
Namespace is a namespace or namespace. The traditional C ++ only has one global namespace, global scopes become increasingly crowded, and everyone may use the same name to implement different libraries. Therefore, programmers may encounter name
Github: https://github.com/hirokidaichi/namespace-jsDefine the Namespace object:Var NamespaceNow let's take a look at the definition of the Namespace object. It is a NamespaceDefinition object. This Object is a function Object (the constructor of
Namespace
NamespaceA keyword is used to declare a range. This namespace range allows you to organize code and provides you with a method to create a globally unique type:
The namespace name can be any legal identifier. The namespace name can
For the namespace, the official documentation has already been very detailed [view]. I have made some practical and summary here.
The most explicit purpose of a namespace is to solve the problem of duplicate names. In PHP, two functions or classes
C ++ namespace, namespaceOverview
In C language, the program has only one global variable scope, and all global identifiers share the same scope. During Development by multiple people, identifier conflicts are easily caused. C ++ puts forward the
C # namespace (Namespace)
Namespaces are designed to provide a way to separate a set of names from other names. The name of a class declared in one namespace does not conflict with the name of the same class declared in another namespace.
Define
[Namespace] namespace is the basis for using PHP namespaces.
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I. PHP namespace mainly solves three types of conflicts: constants, functions, and
Python's namespace is something the Python program ape must understand, and learning about the Python namespace will allow us to essentially master some of the trivial rules in Python.Next I will reveal the nature of the Python namespace in four
PHP Namespaces and Auto-load classes, PHP namespace loading classes
PHP's namespace (namespace) is only available after php5.3. This concept is already very early in C #, and the namespace in PHP is actually the same as the C # concept.
Why should
1The namespace can be divided into global namespaces. A namespace is a scope.
2The namespace can be defined within the global scope or other scopes, but not within the function or class. You can add any declaration that can appear in the global
thinkphp namespace usage examples, thinkphp namespaces
This example describes the Thinkphp namespace usage. Share to everyone for your reference, as follows:
The new version (3.2) uses namespaces to define and load class library files, solve
The Python namespace is something that Python programmers must understand, in essence, we will master some trivial rules in Python. The Python namespace is something that Python programmers must understand and learn about Python namespaces, in
One of the most important new features of PHP 5.3 that has been released recently is the addition of namespaces. This article describes some of the terminology of the PHP namespace, its parsing rules, and the application of some advanced features,
"About modularity and why to Modularize"
Let's talk about why we want to modularize. In fact, this is related to coding ideas and the convenience of code management (no mention of namespace pollution is because I believe that the coder who has
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