PHP Socket Server_PHP Tutorial

01
02
if (php_sapi_name() != 'cli') {
03
exit("run cli");
04
}
05

06
# The error_reporting setting in php.ini is life or death
07
# while(true) is too fierce, writing logs will occupy high IO
08
//ini_set('error_reporting', E_ERROR);
09
//ini_set('display_errors', 0);
10
set_time_limit(0);
11

12
# Record file
13
$recvfile = './recv.txt';
14

15
#Heartbeat mark
16
$heartag = "rn";
17

18
# Array length
19
$datalen = 1024 * 1024;
20

21
$ip = '192.168.125.233';
22
$port = 12345;
23

24
# IPv4, stream, TCP
25
$sockect = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
26
# Required to bind the server
27
if (!socket_bind($sockect, $ip, $port)) {
28
exit("socket bind failn");
29
}
30

31
# Listen
32
socket_listen($sockect);
33
# No blocking
34
socket_set_nonblock($sockect);
35

36
$clients = array();
37

38
while (true) {
39
#Receive client connection
40
$client = socket_accept($sockect);
41
if (is_resource($client)) {
42
# Trigger heartbeat
43
socket_write($client, $heartag, strlen($heartag));
44
$clients[] = $client;
45
printf("client index:%dn", count($clients));
46
}
47
unset($client);
48

49
if (!empty($clients)) {
50
foreach ($clients AS $idx => &$client) {
51
if (is_resource($client)) {
52
$recvstr = '';
53
# Receive client data Note: The fourth parameter must be zero, which is different from the manual, I haven’t figured it out yet
54
If (socket_recv($client, $recvstr, $datalen, 0) === 0) {
55
​​socket_close($client);
56
​​socket_shutdown($client);
57
​​ unset($clients[$idx]);
58
Continue;
59
}
60

61
If ($recvstr == $heartag) {
62
​​ # Trigger heartbeat
63
socket_write($client, $heartag, strlen($heartag));
64
} elseif (trim($recvstr) != "") {
65
​​ # Output the received message
66
$stdmsg = sprintf("%d:%sn", $idx, $recvstr);
67
File_put_contents($recvfile, $stdmsg, FILE_APPEND);
68
echo $stdmsg;
69
}
70
}
71
unset($recvstr, $idx);
72
}
73
}
74
# How long do you want to sleep? This is a problem. If you don’t sleep, the CPU will be very tired and the memory will be consumed
75
usleep(50000);
76
}
77

78
socket_close($sockect);
79
socket_shutdown($sockect);
80
?>
Author: oodbqpoo

http://www.bkjia.com/PHPjc/478071.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/478071.htmlTechArticle01 ?php 02 if (php_sapi_name() != cli) { 03 exit(run cli); 04 } 05 06 # The error_reporting setting in php.ini is life or death. 07 # while(true) is too fierce. Writing logs will take up a lot of memory...