checkdnsrr | PHP 3.0
int checkdnsrr(string host[, string type]) |
Checks DNS records corresponding to a given Internet host name or IP address.

closelog | PHP 3.0
bool closelog(void) |
Closes connection to system logger.

define_syslog_variables | PHP 3.0
void define_syslog_variables(void) |
Initializes all syslog-related variables.

fsockopen | PHP 3.0
int fsockopen(string hostname, int port[, int errno[, string errstr[, float timeout]]]) |
Opens an Internet or Unix domain socket connection.

gethostbyaddr | PHP 3.0
string gethostbyaddr(string ip_address) |
Gets the Internet hostname corresponding to a given IP address.

gethostbyname | PHP 3.0
string gethostbyname(string hostname) |
Gets the IP address corresponding to a given Internet hostname.

gethostbynamel | PHP 3.0
array gethostbynamel(string hostname) |
Returns a list of IP addresses that a given hostname resolves to.

getmxrr | PHP 3.0
int getmxrr(string hostname, array mxhosts[, array weight]) |
Gets MX records corresponding to a given Internet hostname.

getprotobyname | PHP 4.0
int getprotobyname(string name) |
Returns protocol number associated with name as per /etc/protocols.

getprotobynumber | PHP 4.0
string getprotobynumber(int proto) |
Returns protocol name associated with protocol number proto.

getservbyname | PHP 4.0
int getservbyname(string service, string protocol) |
Returns port associated with service; protocol must be "tcp" or "udp".

getservbyport | PHP 4.0
string getservbyport(int port, string protocol) |
Returns service name associated with port; protocol must be "tcp" or "udp".

ip2long | PHP 4.0
int ip2long(string ip_address) |
Converts a string containing an (IPv4) Internet Protocol dotted address into a proper address.

long2ip | PHP 4.0
string long2ip(int proper_address) |
Converts an (IPv4) Internet network address into a string in Internet standard dotted format.

openlog | PHP 3.0
bool openlog(string ident, int option, int facility) |
Opens connection to system logger.

pfsockopen | PHP 3.0.7
int pfsockopen(string hostname, int port[, int errno[, string errstr[, float timeout]]]) |
Opens persistent Internet or Unix domain socket connection.

socket_get_status | PHP 4.0
array socket_get_status(resource socket_descriptor) |
Returns an array describing socket status.

socket_set_blocking | PHP 4.0
bool socket_set_blocking(resource socket, int mode) |
Set blocking/non-blocking mode on a socket.

socket_set_timeout | PHP 4.0
bool socket_set_timeout(int socket_descriptor, int seconds, int microseconds) |
Sets timeout on a socket read to seconds plus microseconds.

syslog | PHP 3.0
bool syslog(int priority, string message) |
Generates a system log message.