(PHP 7 >= 7.4.0, PHP 8)
sapi_windows_set_ctrl_handler — Set or remove a CTRL event handler
Sets or removes a CTRL event handler, which allows Windows
CLI processes to intercept or ignore CTRL+C and
CTRL+BREAK events. Note that in multithreaded environments,
this is only possible when called from the main thread.
callable
A callback function to set or remove. If set, this function will be called
whenever a CTRL+C or CTRL+BREAK event
occurs. The function is supposed to have the following signature:
$event
) : voideventCTRL event which has been received;
either PHP_WINDOWS_EVENT_CTRL_C
or PHP_WINDOWS_EVENT_CTRL_BREAK.
null callable causes the process to ignore
CTRL+C events, but not CTRL+BREAK events.
add
If true, the handler is set. If false, the handler is removed.
成功时返回 true， 或者在失败时返回 false。
Example #1 Basic sapi_windows_set_ctrl_handler() Usage
This example shows how to intercept CTRL events.
<?php
function ctrl_handler(int $event)
{
switch ($event) {
case PHP_WINDOWS_EVENT_CTRL_C:
echo "You have pressed CTRL+C\n";
break;
case PHP_WINDOWS_EVENT_CTRL_BREAK:
echo "You have pressed CTRL+BREAK\n";
break;
}
}
sapi_windows_set_ctrl_handler('ctrl_handler');
while (true); // infinite loop, so the handler can be triggered
?>