Are there potential RAM issues when using unset in PHP for variables with variable sizes like arrays and strings?

When using unset in PHP for variables with variable sizes like arrays and strings, there can be potential RAM issues if the variable is not properly unset and the memory is not released. To solve this issue, it is important to unset the variable properly after its use to free up the memory it occupies.

// Example of unsetting a variable properly to release memory
$variable = [1, 2, 3, 4, 5]; // Array with variable size
unset($variable); // Unset the variable to release memory