What are the best practices for managing memory usage in PHP scripts?

To manage memory usage in PHP scripts, it is important to properly handle variables, limit unnecessary memory allocations, and release memory when it is no longer needed. One way to optimize memory usage is by using unset() function to free up memory allocated to variables that are no longer in use.

// Example of managing memory usage by unsetting variables
$largeArray = range(1, 1000000); // Creating a large array
// Process the array
unset($largeArray); // Free up memory by unsetting the array