Search results for: "DNS checks"

What are the limitations of using the gethostbyaddr function in PHP to convert IP addresses to DNS names, and how should developers handle cases where no reverse resolution is available?

The gethostbyaddr function in PHP may have limitations such as slow performance or unreliable results when converting IP addresses to DNS names. Devel...

What are the differences between root servers, authoritative name servers, and parent servers in the context of DNS queries using PHP?

When making DNS queries using PHP, it's important to understand the differences between root servers, authoritative name servers, and parent servers....

How can the concept of Reverse DNS Lookup be applied in PHP for domain resolution?

Reverse DNS Lookup can be applied in PHP for domain resolution by using the `gethostbyaddr()` function. This function takes an IP address as input and...

What are the limitations of relying on DNS resolution for determining domain availability in PHP?

Relying solely on DNS resolution for determining domain availability in PHP can be unreliable as it may not accurately reflect the actual availability...

What are some best practices for displaying a user's DNS name on a website using PHP?

When displaying a user's DNS name on a website using PHP, it is important to sanitize the input to prevent any potential security vulnerabilities such...