How can one effectively handle error messages in PHP validation scripts?

When handling error messages in PHP validation scripts, it is important to properly capture and display any errors to the user in a clear and concise manner. One effective way to do this is by using PHP's built-in functions like `empty()` and `isset()` to check for validation errors and then storing these errors in an array to display later. 

// Initialize an empty array to store validation errors
$errors = [];

// Validate input fields
if(empty($_POST['username'])) {
    $errors[] = "Username is required";
}

if(empty($_POST['email'])) {
    $errors[] = "Email is required";
}

// Display errors if any
if(!empty($errors)) {
    foreach($errors as $error) {
        echo $error . "<br>";
    }
}

Keywords

try-catch error handling validation exceptions error messages

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