EvStat::__construct

(PECL ev >= 0.2.0)

EvStat::__construct — Constructs EvStat watcher object

Description

public 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

Example #1 Monitor changes of /var/log/messages

<?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();
}
});

?>