How can logical expressions be effectively applied in PHP code to avoid errors?

To effectively apply logical expressions in PHP code to avoid errors, it is important to use proper syntax and ensure that the conditions are logically sound. This includes using appropriate comparison operators (such as ==, ===, !=, !==, <, >, etc.) and logical operators (such as &&, ||, !) to accurately evaluate conditions. Additionally, it is crucial to test the logical expressions with different scenarios to ensure they behave as expected and handle any potential edge cases.

// Example of using logical expressions to avoid errors
$age = 25;
$isAdult = ($age >= 18);

if ($isAdult) {
    echo "You are an adult.";
} else {
    echo "You are not an adult.";
}