<?php
Swoole\Server->on('start', callback $callback)
The event name
callback function
if success, it returns TRUE, otherwise it returns FALSE.
Executue the callback function when the Server is started.
Before the start
stage, the Server has finished the stages:
After the start
stage, the reactor threads are ready to process event and accept connections.
In the callback function registered on start
, only limited functions should be defined. Such as logging, record and modify the name of process, record the process ID etc .
The stages start
and workerstart
are started the same time in different processes.
It is recommended to save the value of $server->master_pid
and $server->manager_pid
into file in the start
callback function. Then you are able to send Linux signals to control these processes.
This stage can't be used in SWOOLE_BASE
mode.
<?php
$server = new Swoole\Server("127.0.0.1", 9501);
$server->on('start', function ($server){
echo "Server is started.\n";
});
$server->on('connect', function ($server, $fd){
echo "New connection established: #{$fd}.\n";
});
$server->on('receive', function ($server, $fd, $from_id, $data) {
$server->send($fd, "Echo to #{$fd}: \n".$data);
$server->close($fd);
});
$server->on('close', function ($server, $fd) {
echo "Connection closed: #{$fd}.\n";
});
$server->start();