What are other methods to optimize memory usage in PHP scripts?

One method to optimize memory usage in PHP scripts is to unset variables that are no longer needed to free up memory. This can help prevent memory leaks and improve the overall performance of the script.

// Unset variables after they are no longer needed
$var1 = "Hello";
$var2 = "World";

// Perform operations using $var1 and $var2

unset($var1);
unset($var2);