What are common issues with namespaces and Composer when using multiple packages in a PHP project?

One common issue with namespaces and Composer when using multiple packages in a PHP project is namespace conflicts. This can occur when two packages define classes with the same name in different namespaces. To solve this issue, you can alias one of the conflicting classes using the `use` keyword with an alias.

use Vendor\Package1\ClassName as Package1ClassName;
use Vendor\Package2\ClassName as Package2ClassName;

// Now you can use Package1ClassName and Package2ClassName to differentiate between the conflicting classes