What are some best practices for handling errors in input fields when using auto-completion for street names in PHP?

When using auto-completion for street names in PHP input fields, it is important to handle errors gracefully to provide a better user experience. One best practice is to validate the input against a list of valid street names before submitting the form. This can help prevent incorrect or incomplete street names from being entered. 

// Validate the input against a list of valid street names
$valid_street_names = array("Main Street", "First Avenue", "Elm Road");

$input_street_name = $_POST['street_name'];

if (!in_array($input_street_name, $valid_street_names)) {
    echo "Error: Invalid street name. Please enter a valid street name.";
    // Handle the error accordingly, such as displaying an error message to the user
} else {
    // Proceed with processing the form data
}

Keywords

validation sanitization error handling input filtering auto-complete

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