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EvStat::__construct

PHP function Edit on GitHub ✎

(PECL ev >= 0.2.0)

Constructs EvStat watcher object

Description

EvStat::__construct(string $path, float $interval, callable $callback, mixed $data = null, int $priority = 0)

Constructs EvStat watcher object and starts the watcher automatically.

Parameters

path: The path to wait for status changes on.
interval: Hint on how quickly a change is expected to be detected and should normally be specified as 0.0 to let libev choose a suitable value.
callback: See Watcher callbacks.
data: Custom data associated with the watcher.
priority: Watcher priority

Examples

Monitor changes of /var/log/messages

php

<?php

// Use 10 second update interval.
$w = new EvStat("/var/log/messages", 10, function ($w) {
    echo "/var/log/messages changed\n";

    $attr = $w->attr();

    if ($attr['nlink']) {
        printf("Current size: %ld\n", $attr['size']);
        printf("Current atime: %ld\n", $attr['atime']);
        printf("Current mtime: %ld\n", $attr['mtime']);
    } else {
        fprintf(STDERR, "`messages` file is not there!");
        $w->stop();
    }
});

?>

Source: reference/ev/evstat/construct.xml · from the official PHP manual (php/doc-en)