What are the best practices for securely executing dynamic code in PHP without resorting to eval()?

Using eval() in PHP can introduce security vulnerabilities as it allows arbitrary code execution. To securely execute dynamic code without using eval(), you can utilize the PHP function `create_function()` or anonymous functions (closures). These methods allow for dynamic code execution while reducing the risk of code injection attacks.

// Example using create_function()
$dynamicCode = "echo 'Hello, World!';";
$dynamicFunction = create_function('', $dynamicCode);
$dynamicFunction();

// Example using anonymous function
$dynamicCode = function() {
    echo 'Hello, World!';
};
$dynamicCode();