php man page for eio_statvfs

EIO_STATVFS(3)								 1							    EIO_STATVFS(3)

eio_statvfs - Get file system statistics

SYNOPSIS
       resource eio_statvfs (string  $path, int  $pri, callable  $callback, [mixed  $data])

DESCRIPTION
       eio_statvfs(3) returns file system statistics information in $result argument of $callback

PARAMETERS
	      o $path
		- Pathname of any file within the mounted file system

	      o $pri
		-The  request  priority:  EIO_PRI_DEFAULT,  EIO_PRI_MIN,  EIO_PRI_MAX,	or  NULL.  If  NULL  passed,  $pri  internally	is  set to
		EIO_PRI_DEFAULT.

	      o $callback
		-$callback function is called when the request is done. It should match the following prototype:

	      void callback(mixed $data, int $result[, resource $req]);

		     o $data
		       -is custom data passed to the request.

		     o $result
		       -request-specific result value; basically, the value returned by corresponding system call.

		     o $req
		       -is optional request resource which can be used with functions like eio_get_last_error(3)

	      o $data
		- Arbitrary variable passed to $callback.

RETURN VALUES
       eio_statvfs(3) returns request resource on success or FALSE on error. On success assigns $result argument of $callback to an array.

EXAMPLES
       Example #1

	      eio_statvfs(3) example

	      <?php
	      $tmp_filename = '/tmp/eio-file.tmp';
	      touch($tmp_filename);

	      function my_statvfs_callback($data, $result) {
		  var_dump($data);
		  var_dump($result);

	       @unlink($data);
	      }

	      eio_statvfs($tmp_filename, EIO_PRI_DEFAULT, "my_statvfs_callback", $tmp_filename);
	      eio_event_loop();
	      ?>

	      The above example will output something similar to:

	      string(17) "/tmp/eio-file.tmp"
	      array(11) {
		["f_bsize"]=>
		int(4096)
		["f_frsize"]=>
		int(4096)
		["f_blocks"]=>
		int(262144)
		["f_bfree"]=>
		int(262111)
		["f_bavail"]=>
		int(262111)
		["f_files"]=>
		int(1540815)
		["f_ffree"]=>
		int(1540743)
		["f_favail"]=>
		int(1540743)
		["f_fsid"]=>
		int(0)
		["f_flag"]=>
		int(4102)
		["f_namemax"]=>
		int(255)
	      }

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