How can PHP developers effectively manage class dependencies and includes to prevent redeclaration errors like "Cannot redeclare class"?

To prevent redeclaration errors like "Cannot redeclare class", PHP developers can effectively manage class dependencies and includes by using autoloading mechanisms such as Composer's PSR-4 autoloading. This allows classes to be loaded only when they are needed, preventing redeclaration issues. 

// Use Composer's autoloader to prevent redeclaration errors
require 'vendor/autoload.php';

// Your PHP code here

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PHP class dependencies includes redeclaration errors prevent

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