EvStat::__construct

(PECL ev >= 0.2.0)

EvStat::__construct — Constructs EvStat watcher object

说明

public EvStat::__construct ( string $path , double $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

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 ();
 ?>