Php/docs/function.sapi-windows-generate-ctrl-event

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sapi_windows_generate_ctrl_event

(PHP 7 >= 7.4.0)

sapi_windows_generate_ctrl_eventSend a CTRL event to another process


说明

sapi_windows_generate_ctrl_event ( int $event [, int $pid = 0 ] ) : bool

Sends a CTRL event to another process in the same process group.


参数

event
The CTRL even to send; either PHP_WINDOWS_EVENT_CTRL_C or PHP_WINDOWS_EVENT_CTRL_BREAK.
pid
The ID of the process to which to send the event to. If 0 is given, the event is sent to all processes of the process group.


返回值

成功时返回 true, 或者在失败时返回 false


范例

Example #1 Basic sapi_windows_generate_ctrl_event() Usage

This example shows how to pass along CTRL+BREAK events to a child process. In this case the child process echoes I'm still alive every second, until the user presses CTRL+BREAK, what causes only the child process to be terminated.


<?php// forward CTRL+BREAK events to the child processsapi_windows_set_ctrl_handler('sapi_windows_generate_ctrl_event');// create a child process which echoes every second$cmd = ['php', '-r', 'while (true) { echo "I\'m still alive\n"; sleep(1); }'];$descspec = array(['pipe', 'r'], ['pipe', 'w'], ['pipe', 'w']);$options = ['create_process_group' => true];$proc = proc_open($cmd, $descspec, $pipes, null, null, $options);while (true) {    echo fgets($pipes[1]);}?>

参见