How can error handling and debugging be improved in the sendToHost function to prevent Internal Server Errors when sending GET requests?

To prevent Internal Server Errors when sending GET requests in the sendToHost function, error handling can be improved by checking for errors in the response before attempting to process it. This can be done by checking the HTTP status code of the response and handling any errors accordingly. Additionally, debugging can be improved by logging relevant information such as the request URL, response status code, and any error messages.

function sendToHost($url) {
    $response = file_get_contents($url);
    
    if ($response === false) {
        // Handle error when fetching data
        error_log("Error fetching data from $url");
        return false;
    }
    
    $httpCode = substr($http_response_header[0], 9, 3);
    if ($httpCode != 200) {
        // Handle error when response status code is not 200
        error_log("Error: HTTP status code $httpCode received from $url");
        return false;
    }
    
    // Process the response data
    return $response;
}

// Example usage
$url = "http://example.com/data";
$result = sendToHost($url);
if ($result) {
    echo $result;
} else {
    echo "Error fetching data from $url";
}