Exemples

Exemple #1 Surveillance de STDIN en utilisant l'API basique


<?php

function print_line($fd, $events, $arg)
{
    static $max_requests = 0;

    $max_requests++;

    if ($max_requests == 10) {
        // Sort de la boucle après 10 écritures
        event_base_loopexit($arg[1]);
    }

    // Affiche la ligne
    echo  fgets($fd);
}

// Création de la base et de l'événement
$base = event_base_new();
$event = event_new();

$fd = STDIN;

// Définit les drapeaux de l'événement
event_set($event, $fd, EV_READ | EV_PERSIST, "print_line", array($event, $base));
// Définit la base de l'événement
event_base_set($event, $base);

// Activation de l'événement
event_add($event);
// Début de la boucle de l'événement
event_base_loop($base);

?>

Exemple #2 Surveillance de STDIN en utilisant l'API des événements mis en tampon


<?php

function print_line($buf, $arg)
{
    static $max_requests;

    $max_requests++;

    if ($max_requests == 10) {
        event_base_loopexit($arg);
    }

    // Affiche la ligne
    echo event_buffer_read($buf, 4096);
}

function error_func($buf, $what, $arg)
{
    // Gestion de l'erreur
}

$base = event_base_new();
$eb = event_buffer_new(STDIN, "print_line", NULL,  "error_func", $base);

event_buffer_base_set($eb,  $base);
event_buffer_enable($eb,  EV_READ);

event_base_loop($base);

?>

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User Contributed Notes 1 note

down

Alexis ¶

14 years ago


Server example:
<?php
$socket = stream_socket_server ('tcp://0.0.0.0:2000', $errno, $errstr);
stream_set_blocking($socket, 0);
$base = event_base_new();
$event = event_new();
event_set($event, $socket, EV_READ | EV_PERSIST, 'ev_accept', $base);
event_base_set($event, $base);
event_add($event);
event_base_loop($base);

$GLOBALS['connections'] = array();
$GLOBALS['buffers'] = array();

function ev_accept($socket, $flag, $base) {
    static $id = 0;
    
    $connection = stream_socket_accept($socket);
    stream_set_blocking($connection, 0);
    
    $id += 1;
    
    $buffer = event_buffer_new($connection, 'ev_read', NULL, 'ev_error', $id);
    event_buffer_base_set($buffer, $base);
    event_buffer_timeout_set($buffer, 30, 30);
    event_buffer_watermark_set($buffer, EV_READ, 0, 0xffffff);
    event_buffer_priority_set($buffer, 10);
    event_buffer_enable($buffer, EV_READ | EV_PERSIST);
    
    // we need to save both buffer and connection outside
    $GLOBALS['connections'][$id] = $connection;
    $GLOBALS['buffers'][$id] = $buffer;
}

function ev_error($buffer, $error, $id) {
    event_buffer_disable($GLOBALS['buffers'][$id], EV_READ | EV_WRITE);
    event_buffer_free($GLOBALS['buffers'][$id]);
    fclose($GLOBALS['connections'][$id]);
    unset($GLOBALS['buffers'][$id], $GLOBALS['connections'][$id]);
}

function ev_read($buffer, $id) {
    while ($read = event_buffer_read($buffer, 256)) {
        var_dump($read);
    }
}
?>

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