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The Network functions contains various network function and let you manipulate information sent to the browser by the Web server, before any other output has been sent.
The Network functions are part of the PHP core. There is no installation needed to use these functions.
| Function | Description |
|---|---|
| checkdnsrr() | Checks DNS records for type corresponding to host |
| closelog() | Closes the connection of system logger |
| define_syslog_variables() | Deprecated and removed in PHP 5.4. Initializes the variables used in syslog functions |
| dns_check_record() | Alias of checkdnsrr() |
| dns_get_mx() | Alias of getmxrr() |
| dns_get_record() | Gets the DNS resource records associated with the specified hostname |
| fsockopen() | Opens an Internet or Unix domain socket connection |
| gethostbyaddr() | Returns the domain name for a given IP address |
| gethostbyname() | Returns the IPv4 address for a given domain/host name |
| gethostbynamel() | Returns a list of IPv4 address for a given domain/host name |
| gethostname() | Returns the host name |
| getmxrr() | Returns the MX records for the specified internet host name |
| getprotobyname() | Returns the protocol number for a given protocol name |
| getprotobynumber() | Returns the protocol name for a given protocol number |
| getservbyname() | Returns the port number for a given Internet service and protocol |
| getservbyport() | Returns the Internet service for a given port and protocol |
| header_register_callback() | Calls a header function |
| header_remove() | Removes an HTTP header previously set with the header() function |
| header() | Sends a raw HTTP header to a client |
| headers_list() | Returns a list of response headers to be sent to the browser |
| headers_sent() | Checks if/where headers have been sent |
| http_response_code() | Sets or returns the HTTP response status code |
| inet_ntop() | Converts a 32bit IPv4 or 128bit IPv6 address into a readable format |
| inet_pton() | Converts a readable IP address into a packed 32bit IPv4 or 128bit IPv6 format |
| ip2long() | Converts an IPv4 address into a long integer |
| long2ip() | Converts a long integer address into a string in IPv4 format |
| openlog() | Opens the connection of system logger |
| pfsockopen() | Opens a persistent Internet or Unix domain socket connection |
| setcookie() | Defines a cookie to be sent along with the rest of the HTTP headers |
| setrawcookie() | Defines a cookie (without URL encoding) to be sent along with the rest of the HTTP headers |
| socket_get_status() | Alias of stream_get_meta_data() |
| socket_set_blocking() | Alias of stream_set_blocking() |
| socket_set_timeout() | Alias of stream_set_timeout() |
| syslog() | Generates a system log message |
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