php eval()函数的作用是什么?,php eval函数,php Event支持window平台吗?,php Event能在web环境中运行吗?,php EventSource,phpEvn
The "event_buffer_timeout_set" function in PHP is used to set the timeout value for a buffered event. A buffered event allows you to read and write data efficiently from a stream by buffering it.

The "event_buffer_timeout_set" function takes 2 parameters: the first one is the buffered event resource, and the second one is the timeout value in seconds.

Here is an example of how to use this function:

php
$base = event_base_new();
$buffer = event_buffer_new(STDIN, 'event_read_cb', 'event_write_cb', 'event_error_cb', $base);

// Set the timeout value to 5 seconds
event_buffer_timeout_set($buffer, 5);

// Callback functions for reading, writing, and handling errors
function event_read_cb($buffer, $data)
{
// Handle read events
}

function event_write_cb($buffer, $data)
{
// Handle write events
}

function event_error_cb($buffer, $error)
{
// Handle error events
}

// Set the base to loop continuously
event_base_loop($base);


In this example, we create a new buffered event using "event_buffer_new" function, specify the STDIN as the input stream, and define the callback functions for reading, writing, and error handling.

Then we set the timeout value to 5 seconds using "event_buffer_timeout_set" function.

Finally, we start the event base loop using "event_base_loop" function to listen for events.

The specified timeout value determines the maximum amount of time to wait for data to read or write, before triggering an event. If no data is received or sent within the specified timeout, the "event_error_cb" function will be called with the EV_TIMEOUT flag.

This function can be useful to control the behavior of your application when waiting for data or handling timeouts in network communication scenarios.