How can namespaces in PHP impact the loading of external libraries like phpseclib, and what are best practices for resolving namespace-related issues?

When using external libraries like phpseclib in a PHP project with namespaces, conflicts can arise due to naming collisions. To resolve namespace-related issues, you can alias the external library classes with a different name to avoid conflicts.

// Alias the external library classes with a different name
use phpseclib\Crypt\RSA as phpseclibRSA;

// Now you can use the aliased class without conflicts
$rsa = new phpseclibRSA();