How can encryption tools like Zend or IonCube be used to secure PHP code?

Encryption tools like Zend or IonCube can be used to secure PHP code by encrypting the source code files, making it difficult for unauthorized users to view or modify the code. This helps protect sensitive information and intellectual property contained within the code. 

// Example of using IonCube to encrypt PHP code
// This code snippet encrypts the PHP file using IonCube
// Ensure IonCube loader is installed on the server to decrypt and run the encrypted file

// Encrypt the PHP file using IonCube encoder
// Command: ioncube_encoder myfile.php -o encrypted_file.php

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