In what ways can PHP developers optimize their code to prevent blind spots and improve overall functionality?

To prevent blind spots and improve overall functionality, PHP developers can optimize their code by implementing error handling, using proper coding standards, and regularly testing their code for bugs and performance issues.

// Example of implementing error handling in PHP code
try {
    // Code that may throw an exception
} catch (Exception $e) {
    // Handle the exception
    echo 'An error occurred: ' . $e->getMessage();
}