EvStat::__construct

(PECL ev >= 0.2.0)

EvStat::__construct — Constructs EvStat watcher object

说明

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

Constructs EvStat watcher object and starts the watcher automatically.

参数

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

范例

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

<?php
// Use 10 second update interval.
$w = new EvStat("/var/log/messages", 8, function ($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();
 }
});

Ev::run();
?>