Is it advisable to use online converters to switch PHP versions, or are there better alternatives?

It is not advisable to use online converters to switch PHP versions as they may not accurately convert all aspects of the code. It is better to manually update the code to be compatible with the desired PHP version to ensure it functions correctly.

// Example code snippet to update PHP code for compatibility with PHP 7.4
// Before:
$oldArray = array("apple", "banana", "orange");
// After:
$newArray = ["apple", "banana", "orange"];