How can PHP be used to integrate two separate applications, such as a forum and a gallery, without conflicts or errors?

When integrating two separate applications like a forum and a gallery using PHP, conflicts or errors can arise due to naming collisions, incompatible code, or conflicting functions. To avoid these issues, you can use namespaces to encapsulate the code of each application and ensure that they do not interfere with each other. By defining namespaces for each application, you can isolate their functionality and prevent conflicts.

// Define namespace for the forum application
namespace Forum;

class Post {
    // Forum post functionality
}

// Define namespace for the gallery application
namespace Gallery;

class Image {
    // Gallery image functionality
}

// Access forum post class
$forumPost = new Forum\Post();

// Access gallery image class
$galleryImage = new Gallery\Image();