Constructs EvSignal watcher object

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- EvSignal
- Constructs EvSignal watcher object

# EvSignal::__construct

(PECL ev >= 0.2.0)

EvSignal::__construct — Constructs EvSignal watcher object

### Description

public EvSignal::__construct(
int `$signum` ,
callable `$callback` ,
mixed `$data` = `null` ,
int `$priority` = 0
)

Constructs EvSignal watcher object and starts it automatically. For a stopped periodic watcher consider using EvSignal::createStopped() method.

### Parameters

`signum`

  Signal number. See constants exported by pcntl extension. See also `signal(7)` man page.

`callback`

  See Watcher callbacks.

`data`

  Custom data associated with the watcher.

`priority`

  Watcher priority

### Examples

Example #1 Handle SIGTERM signal

    <?php
    $w = new EvSignal(SIGTERM, function ($watcher) {
        echo "SIGTERM received\n";
        $watcher->stop();
    });

    Ev::run();
    ?>

### See Also

- EvSignal::createStopped() - Create stopped EvSignal watcher object