What is namespace in PHP

Namespace in PHP refers to the method used to resolve conflicts between classes and methods with the same name in the PHP library. After adding a namespace, you don't have to worry about code conflicts

In the PHP5.3 version, a new feature called namespace appeared, which is a way to organize PHP classes and prevent any type of code conflict. Next, I will introduce this function in detail in the article, I hope it will be helpful to you.

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The role of namespace:

When we write PHP programs, we may find that as the program code continues to increase and the program becomes more complex, the code will become more and more confusing. And hard to find. Especially when you add other developers' libraries, adding more class and method names to the project becomes problematic without namespaces. When you have a class or method with the same name, the program will report an error. This is called having collisons. Using namespaces, we solve the conflict problem of the code base. The namespace supports PHP classes, functions and constants

PHP namespace Example:

Before a namespace, all PHP code only existed in the global namespace. We can put a piece of PHP code into a namespace using the namespace command, as shown below:

<?php
namespace Vegibit;

Any PHP code after this line is now in the Vegibit namespace. You can also define multiple namespaces in the same PHP file, as shown below:

<?php
namespace Google; 
Class Search {    
 public function query() {     
    return &#39;Searching Google&#39;;   
  }
  } 
   namespace Bing; Class Search {   
  public function query() {      
    return &#39;Searching Bing&#39;; 
       }
       
  }
  ?>

Reduce conflicts and confusion in your application by using namespaces without complication. The above example nicely highlights the benefits of namespaces. But note that both the Google and Bing namespaces have a class named search and a method named query. But don't worry about running into conflicts. Because these classes and methods are declared in different namespaces

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