What best practices should be followed when updating PHP code to ensure smooth transition and functionality?

When updating PHP code, it is important to follow best practices to ensure a smooth transition and maintain functionality. This includes testing the code thoroughly before deploying it, using version control to track changes, documenting any modifications made, and keeping backups of the original code in case of any issues. 

// Example PHP code snippet demonstrating best practices for updating code
// Ensure proper testing before deployment
// Use version control to track changes
// Document any modifications made
// Keep backups of original code

// Original code
function myFunction() {
    // Original functionality here
}

// Updated code
function myFunction() {
    // Updated functionality here
}

Keywords

backward compatibility deprecated functions error handling testing version control

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