What are the risks associated with using the eval function in PHP for dynamic code execution?

Using the eval function in PHP for dynamic code execution can pose security risks as it allows for arbitrary code execution, making your application vulnerable to code injection attacks. To mitigate this risk, it is recommended to avoid using eval whenever possible and instead find alternative solutions such as using built-in PHP functions or libraries.

// Avoid using eval for dynamic code execution
$code = "echo 'Hello, World!';";
eval($code); // This is not recommended

// Alternative solution using built-in PHP functions
$code = "echo 'Hello, World!';";
echo $code; // This is a safer approach