1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
<?php
class test {
protected $x;
static private $test = NULL;
static private $cnt = 0;
static function factory($x) {
if (test::$test) {
return test::$test;
} else {
test::$test = new test($x);
return test::$test;
}
}
protected function __construct($x) {
test::$cnt++;
$this->x = $x;
}
static function destroy() {
test::$test = NULL;
}
protected function __destruct() {
test::$cnt--;
}
public function get() {
return $this->x;
}
static public function getX() {
if (test::$test) {
return test::$test->x;
} else {
return NULL;
}
}
static public function count() {
return test::$cnt;
}
}
test::getX();
?>
|
