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
0.0to let libev choose a suitable value. -
callback -
See Watcher callbacks .
-
data -
Custom data associated with the watcher.
-
priority
返回值
Returns EvStat watcher object on succes.
范例
Example #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();
?>