PHP Socket Server_PHP Tutorial-PHP Tutorial-php.cn

PHP Socket Server_PHP Tutorial

WBOY

Release： 2016-07-13 17:53:13

Original

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if (php_sapi_name() != 'cli') {
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exit("run cli");
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}
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# The error_reporting setting in php.ini is life or death
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# while(true) is too fierce, writing logs will occupy high IO
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//ini_set('error_reporting', E_ERROR);
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//ini_set('display_errors', 0);
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set_time_limit(0);
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# Record file
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$recvfile = './recv.txt';
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#Heartbeat mark
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$heartag = "rn";
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# Array length
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$datalen = 1024 * 1024;
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$ip = '192.168.125.233';
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$port = 12345;
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# IPv4, stream, TCP
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$sockect = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
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# Required to bind the server
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if (!socket_bind($sockect, $ip, $port)) {
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exit("socket bind failn");
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}
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# Listen
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socket_listen($sockect);
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# No blocking
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socket_set_nonblock($sockect);
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$clients = array();
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while (true) {
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#Receive client connection
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$client = socket_accept($sockect);
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if (is_resource($client)) {
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# Trigger heartbeat
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socket_write($client, $heartag, strlen($heartag));
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$clients[] = $client;
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printf("client index:%dn", count($clients));
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}
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unset($client);
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if (!empty($clients)) {
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foreach ($clients AS $idx => &$client) {
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if (is_resource($client)) {
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$recvstr = '';
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# Receive client data Note: The fourth parameter must be zero, which is different from the manual, I haven’t figured it out yet
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If (socket_recv($client, $recvstr, $datalen, 0) === 0) {
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socket_close($client);
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socket_shutdown($client);
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unset($clients[$idx]);
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Continue;
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}
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If ($recvstr == $heartag) {
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# Trigger heartbeat
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socket_write($client, $heartag, strlen($heartag));
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} elseif (trim($recvstr) != "") {
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# Output the received message
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$stdmsg = sprintf("%d:%sn", $idx, $recvstr);
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File_put_contents($recvfile, $stdmsg, FILE_APPEND);
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echo $stdmsg;
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}
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}
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unset($recvstr, $idx);
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}
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}
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# How long do you want to sleep? This is a problem. If you don’t sleep, the CPU will be very tired and the memory will be consumed
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usleep(50000);
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}
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socket_close($sockect);
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socket_shutdown($sockect);
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?>
Author: oodbqpoo