(PHP 4, PHP 5, PHP 7) Converts an long integer address into a string in (IPv4) Internet standard dotted format

(PHP 4, PHP 5, PHP 7) Converts a string containing an (IPv4) Internet Protocol dotted address into a long integer

(PHP 4, PHP 5, PHP 7) Check DNS records corresponding to a given Internet host name or IP address

(PHP 4, PHP 5, PHP 7) Generate a system log message

(PHP 4, PHP 5, PHP 7) Open Internet or Unix domain socket connection

(PHP 4, PHP 5, PHP 7) Alias of

(PHP 4, PHP 5, PHP 7) Get a list of IPv4 addresses corresponding to a given Internet host name

(PHP 5, PHP 7) Returns a list of response headers sent (or ready to send)

(PHP 4, PHP 5, PHP 7) Get the Internet host name corresponding to a given IP address

(PHP 4, PHP 5, PHP 7) Open persistent Internet or Unix domain socket connection