How can PHP beginners ensure that their code for checking webpage reachability follows best practices and security measures?

To ensure that PHP beginners' code for checking webpage reachability follows best practices and security measures, they should use built-in PHP functions like `file_get_contents()` with proper error handling and validation to prevent potential security vulnerabilities like Remote File Inclusion (RFI) attacks. 

$url = 'https://www.example.com';
$contents = @file_get_contents($url);

if ($contents === false) {
    echo 'Error: Unable to reach webpage';
} else {
    echo 'Webpage is reachable';
}

Keywords

PHP webpage reachability security measures code validation error handling

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