Network
- checkdnsrr - Check DNS records corresponding to a given Internet host name or IP address
- closelog - Close connection to system logger
- dns_check_record - Alias of <function>checkdnsrr</function>
- dns_get_mx - Alias of <function>getmxrr</function>
- dns_get_record - Fetch DNS Resource Records associated with a hostname
- fsockopen - Open Internet or Unix domain socket connection
- gethostbyaddr - Get the Internet host name corresponding to a given IP address
- gethostbyname - Get the IPv4 address corresponding to a given Internet host name
- gethostbynamel - Get a list of IPv4 addresses corresponding to a given Internet host
name
- gethostname - Gets the host name
- getmxrr - Get MX records corresponding to a given Internet host name
- getprotobyname - Get protocol number associated with protocol name
- getprotobynumber - Get protocol name associated with protocol number
- getservbyname - Get port number associated with an Internet service and protocol
- getservbyport - Get Internet service which corresponds to port and protocol
- header - Send a raw HTTP header
- header_register_callback - Call a header function
- header_remove - Remove previously set headers
- headers_list - Returns a list of response headers sent (or ready to send)
- headers_sent - Checks if or where headers have been sent
- http_response_code - Get or Set the HTTP response code
- inet_ntop - Converts a packed internet address to a human readable representation
- inet_pton - Converts a human readable IP address to its packed in_addr representation
- ip2long - Converts a string containing an (IPv4) Internet Protocol dotted address into a long integer
- long2ip - Converts an long integer address into a string in (IPv4) Internet standard dotted format
- net_get_interfaces - Get network interfaces
- openlog - Open connection to system logger
- pfsockopen - Open persistent Internet or Unix domain socket connection
- setcookie - Send a cookie
- setrawcookie - Send a cookie without urlencoding the cookie value
- socket_get_status - Alias of <function>stream_get_meta_data</function>
- socket_set_blocking - Alias of <function>stream_set_blocking</function>
- socket_set_timeout - Alias of <function>stream_set_timeout</function>
- syslog - Generate a system log message
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