It depends on how the C: \ xampp \ htdocs \ cacti \ lib \ ping. php line 382nd is written.
/* Here? Row 3 get the socket response */
Switch (socket_select ($ r = array ($ this-> socket), $ w = NULL, $ f = NULL, $ to_sec, $ to_usec )){
Case 2:
/* Connection refused */
$ Error = "refused ";
Break;
Case 1:
/* Get the end time */
$ This-> time = $ this-> get_time ($ this-> precision );
/* Get packet response */
$ Code = @ socket_recv ($ this-> socket, $ this-> reply, 256, 0 );
/* Get the error, if applicable */
$ Err = socket_last_error ($ this-> socket );
/* Set the return message */
$ This-> ping_status = $ this-> time * 1000;
$ This-> ping_response = "UDP Ping Success (". $ this-> time * 1000. "MS )";
$ This-> close_socket ();
Return true;
Case 0:
/* Timeout */
$ Error = "timeout ";
Break;
}
$ Retry_count ++;
}
} Else {
$ This-> ping_response = "Destination address not specified ";
$ This-> ping_status = "down ";
Return false;
}
}/* End ping_udp */
Function ping_tcp (){
/* Host must be nonblank */
If ($ this-> host ["hostname"]) {
/* Initialize variables */
$ This-> ping_status = "down ";
$ This-> ping_response = "default ";
/* Establish timeout variables */
$ To_sec = floor ($ this-& gt; timeout/1000 );
$ To_usec = ($ this-> timeout % 1000) * 1000;
/* Clean up hostname if specifying snmp_transport */
$ This-> host ["hostname"] = str_replace ("tcp:", "", strtolower ($ this-> host ["hostname"]);
$ This-> host ["hostname"] = str_replace ("udp:", "", strtolower ($ this-> host ["hostname"]);
/* Determine the host's ip address */
If ($ this-> is_ipaddress ($ this-> host ["hostname"]) {
$ Host_ip = $ this-> host ["hostname"];
} Else {
$ Host_ip = gethostbyname ($ this-> host ["hostname"]);
If (! $ This-> is_ipaddress ($ host_ip )){
Cacti_log ("WARNING: TCP Ping Error: gethostbyname failed for". $ this-> host ["hostname"]);
$ This-> response = "TCP Ping Error: gethostbyname failed for". $ this-> host ["hostname"];
Return false;
}
}
/* Initilize the socket */
If (substr_count ($ host_ip, ":")> 0 ){
If (defined ("AF_INET6 ")){
$ This-> socket = socket_create (AF_INET6, SOCK_STREAM, SOL_TCP );
} Else {
$ This-> ping_response = "PHP binary does not support IPv6 ";
$ This-> ping_status = "down ";
Cacti_log ("WARNING: IPv6 host detected, PHP version does not support IPv6 ");
Return false;
}
} Else {
$ This-> socket = socket_create (AF_INET, SOCK_STREAM, SOL_TCP );
}
While (1 ){
/* Set start time */
$ This-> start_time ();
/* Allow immediate return */
Socket_set_nonblock ($ this-> socket );
@ Socket_connect ($ this-> socket, $ host_ip, $ this-> port );
Socket_set_block ($ this-> socket );
Switch (socket_select ($ r = array ($ this-> socket), $ w = array ($ this-> socket), $ f = array ($ this-> socket ), $ to_sec, $ to_usec )){
Case 2:
/* Connection refused */
$ This-> time = $ this-> get_time ($ this-> precision );
If ($ this-> time * 1000) <= $ this-> timeout ){
$ This-> ping_response = "TCP Ping connection refused (". $ this-> time * 1000. "MS )";
$ This-> ping_status = $ this-> time * 1000;
}
$ This-> close_socket ();
Return true;/* "connection refused" says: host is alive (else ping wocould time out )*/
Case 1:
/* Connected, so calculate the total time and return */
$ This-> time = $ this-> get_time ($ this-> precision );
If ($ this-> time * 1000) <= $ this-> timeout ){
$ This-> ping_response = "TCP Ping Success (". $ this-> time * 1000. "MS )";
$ This-> ping_status = $ this-> time * 1000;
}
$ This-> close_socket ();
Return true;
Case 0:
/* Timeout */
$ This-> ping_response = "TCP ping timed out ";
$ This-> ping_status = "down ";
$ This-> close_socket ();
Return false;
}
}
} Else {
$ This-> ping_response = "Destination address not specified ";
$ This-> ping_status = "down ";
Return false;
}
}/* End ping_tcp */
Function ping ($ avail_method = AVAIL_SNMP_AND_PING, $ ping_type = PING_ICMP, $ timeout = 500, $ retries = 3 ){
/* Initialize variables */
$ Ping_ping = true;
$ Ping_snmp = true;
$ This-> ping_status = "down ";
$ This-> ping_response = "Ping not completed Med due to setting .";
$ This-> snmp_status = "down ";
$ This-> snmp_response = "SNMP not completed Med due to setting or ping result .";
$ This-> avail_method = $ avail_method;
/* Short circuit for availability none */
If ($ avail_method = AVAIL_NONE ){
$ This-& gt; ping_status = "0.00 ";
Return true;
}
If ((! Function_exists ("socket_create") & ($ avail_method! = AVAIL_NONE )){
$ Avail_method = AVAIL_SNMP;
Cacti_log ("WARNING: sockets support not enabled in PHP, falling back to SNMP ping ");
}
If ($ retries <= 0) | ($ retries> 5 )){
$ This-> retries = 2;
} Else {
$ This-> retries = $ retries;
}
If ($ timeout <= 0 ){
$ This-> timeout = 500;
} Else {
$ This-> timeout = $ timeout;
}
/* Decimal precision is 0.0000 */
$ This-> precision = 5;
/* Snmp pinging has been selected at a minimum */
$ Ping_result = false;
$ Snmp_result = false;
/* Icmp/udp ping test */
If ($ avail_method = AVAIL_SNMP_AND_PING) |
($ Avail_method = AVAIL_SNMP_OR_PING) |
($ Avail_method = AVAIL_PING )){
If ($ ping_type = PING_ICMP ){
$ Ping_result = $ this-> ping_icmp ();
} Else if ($ ping_type = PING_UDP ){
$ Ping_result = $ this-> ping_udp ();
} Else if ($ ping_type = PING_TCP ){
$ Ping_result = $ this-> ping_tcp ();
}
}
/* Snmp test */
If ($ avail_method = AVAIL_SNMP_OR_PING) & ($ ping_result = true )){
$ Snmp_result = true;
$ This-> snmp_status = 0.000;
} Else if ($ avail_method = AVAIL_SNMP_AND_PING) & ($ ping_result = false )){
$ Snmp_result = false;
} Else if ($ avail_method = AVAIL_SNMP) | ($ avail_method = AVAIL_SNMP_AND_PING )){
If ($ this-> host ["snmp_community"] = "") & ($ this-> host ["snmp_version"]! = 3 )){
/* Snmp version 1/2 without community string assume SNMP test to be successful
Due to backward compatibility issues */
$ Snmp_result = true;
$ This-> snmp_status = 0.000;
} Else {
$ Snmp_result = $ this-> ping_snmp ();
}
}
Switch ($ avail_method ){
Case AVAIL_SNMP_OR_PING:
If ($ this-> host ["snmp_community"] = "") & ($ this-> host ["snmp_version"]! = 3 )){
If ($ ping_result ){
Return true;
} Else {
Return false;
}
} Elseif ($ snmp_result ){
Return true;
} Elseif ($ ping_result ){
Return true;
} Else {
Return false;
}
Case AVAIL_SNMP_AND_PING:
If ($ this-> host ["snmp_community"] = "") & ($ this-> host ["snmp_version"]! = 3 )){
If ($ ping_result ){
Return true;
} Else {
Return false;
}
} Elseif ($ snmp_result) & ($ ping_result )){
Return true;
} Else {
Return false;
}
Case AVAIL_SNMP:
If ($ snmp_result ){
Return true;
} Else {
Return false;
}
Case AVAIL_PING:
If ($ ping_result ){
Return true;
} Else {
Return false;
}
Default:
Return false;
}
}/* End_ping */
Function is_ipaddress ($ ip_address = ''){
/* Check for ipv4/v6 */
If (substr_count ($ ip_address ,":")){
/* Compressed dot format */
If (substr_count ($ ip_address ,"::")){
$ Ip_address = str_replace (":", ":", $ ip_address );
$ Segments = explode (":", $ ip_address );
} Else {
$ Segments = explode (":", $ ip_address );
If (sizeof ($ segments )! = 8 ){
/* Shocould be 8 segments */
Return false;
}
}
$ I = 0;
Foreach ($ segments as $ segment ){
$ I ++;
If (trim ($ segment) = "") & ($ I = 1 )){
Continue;
} Elseif (! Is_numeric ("0x". $ segment )){
Return false;
}
}
Return true;
} Else if (strlen ($ ip_address) <= 15 ){
$ Octets = explode ('.', $ ip_address );
$ I = 0;
If (count ($ octets )! = 4 ){
Return false;
}
Foreach ($ octets as $ octet ){
If ($ I = 0 | $ I = 3 ){
If ($ octet <0) | ($ octet> 255 )){
Return false;
}
} Else {
If ($ octet <0) | ($ octet> 255 )){
Return false;
}
}
$ I ++;
}
Return true;
} Else {
Return false;
}
}
}
?>
You can avoid it first.
Socket_select ($ r = array ($ this-> socket), $ w = NULL, $ f = NULL, $ to_sec, $ to_usec)
Writing
@ Socket_select ($ r = array ($ this-> socket), $ w = NULL, $ f = NULL, $ to_sec, $ to_usec)
Or error_reporting (E_ALL ^ E_STRICT );
By prototype
Int socket_select (array & read, array & write, array & except, int TV _sec [, int TV _usec])
We can see that the first three parameters are passed by reference.
Starting from php5.3, the reference must be generated from the entity; otherwise, an error is reported.
It is not ruled out that it will not work in the future.
Which of the following statements is true?
$ R = array ($ this-> socket );
$ W = NULL;
$ F = NULL;
Socket_select ($ r, $ w, $ f, $ to_sec, $ to_usec)
?? Large board,
?? Already? Solution? Now,
Thank you!
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