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<?php

// implementation of Cyclic array
// 2001-11-03 Dobrica Pavlinusic <dpavlin@rot13.org>

// generally functions return boolean if array looped

class Cyclic_Arr {
        var $size;              // number of elements before cycle
        var $arr = Array();     // actual data
        var $pos = 0;           // current position
        var $did_loop = 0;      // did last move made loop?

        // init size of array
        function set_size($size) {
                $this->size=$size;
        }

        // put element into array, move to next
        function push($val) {
                $this->arr[$this->pos] = $val;
                $this->next();
                //return $this->did_loop;
        }

        // get element from array, move to next
        function fetch() {
                $out = $this->arr[$this->pos];
                $this->next();
                return $out;
        }

        // move to next
        function next() {
                if ($this->pos == $this->size) $this->did_loop = 1;
                $this->pos = ($this->pos + 1) % $this->size;
                return $this->did_loop;
        }

        // move to previous
        function prev() {
                if ($this->pos == 0) $this->did_loop = 1;
                $this->pos = ($this->pos + $this->size - 1) % $this->size;
                return $this->did_loop;
        }

        // tell size of array
        function tell_size() {
                return $this->size;
        }

        // tell current position in array
        function tell_pos() {
                return $this->pos;
        }

        function did_loop() {
                return $this->did_loop;
        }

}

?>
1	<?php
2
3	// implementation of Cyclic array
4	// 2001-11-03 Dobrica Pavlinusic <dpavlin@rot13.org>
5
6	// generally functions return boolean if array looped
7
8	class Cyclic_Arr {
9	var $size; // number of elements before cycle
10	var $arr = Array(); // actual data
11	var $pos = 0; // current position
12	var $did_loop = 0; // did last move made loop?
13
14	// init size of array
15	function set_size($size) {
16	$this->size=$size;
17	}
18
19	// put element into array, move to next
20	function push($val) {
21	$this->arr[$this->pos] = $val;
22	$this->next();
23	//return $this->did_loop;
24	}
25
26	// get element from array, move to next
27	function fetch() {
28	$out = $this->arr[$this->pos];
29	$this->next();
30	return $out;
31	}
32
33	// move to next
34	function next() {
35	if ($this->pos == $this->size) $this->did_loop = 1;
36	$this->pos = ($this->pos + 1) % $this->size;
37	return $this->did_loop;
38	}
39
40	// move to previous
41	function prev() {
42	if ($this->pos == 0) $this->did_loop = 1;
43	$this->pos = ($this->pos + $this->size - 1) % $this->size;
44	return $this->did_loop;
45	}
46
47	// tell size of array
48	function tell_size() {
49	return $this->size;
50	}
51
52	// tell current position in array
53	function tell_pos() {
54	return $this->pos;
55	}
56
57	function did_loop() {
58	return $this->did_loop;
59	}
60
61	}
62
63	?>