learnpress / inc / abstracts / abstract-array-access.php

abstract-array-access.php in LearnPress – WordPress LMS Plugin for Create and Sell Online Courses 4.4.1, at inc/abstracts/abstract-array-access.php

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1	<?php
2
3	/**
4	* Class LP_Array_Access
5	*/
6	class LP_Array_Access {
7
8	/**
9	* @var array
10	*/
11	protected $_data = array();
12
13	/**
14	* @var int
15	*/
16	protected $_position = 0;
17
18	/**
19	* LP_Array_Access constructor.
20	*
21	* @param $data
22	*/
23	public function __construct( $data ) {
24	$this->_data = is_array( $data ) ? $data : (array) $data;
25	}
26
27	public function offsetExists( $offset ) {
28	if ( $offset ) {
29	return array_key_exists( $offset, $this->_data );
30	}
31
32	return false;
33	}
34
35	public function offsetSet( $offset, $value ) {
36	if ( $offset ) {
37	$this->_data[ $offset ] = $value;
38	}
39	}
40
41	public function offsetGet( $offset ) {
42	return $this->offsetExists( $offset ) ? $this->_data[ $offset ] : false;
43	}
44
45	public function offsetUnset( $offset ) {
46	if ( $this->offsetExists( $offset ) ) {
47	unset( $this->_data[ $offset ] );
48
49	return true;
50	}
51
52	return false;
53	}
54
55	/**
56	* Reset current position of answer options.
57	*/
58	public function rewind() {
59	$this->_position = 0;
60	}
61
62	/**
63	* @return mixed
64	*/
65	public function current() {
66	$values = array_values( $this->_data );
67
68	return $values[ $this->_position ];
69	}
70
71	/**
72	* @return mixed
73	*/
74	public function key() {
75	$keys = array_keys( $this->_data );
76
77	return $keys[ $this->_position ];
78	}
79
80	/**
81	* Nex question.
82	*/
83	public function next() {
84	++ $this->_position;
85	}
86
87	/**
88	* @return bool
89	*/
90	public function valid() {
91	$values = array_values( $this->_data );
92
93	return isset( $values[ $this->_position ] );
94	}
95
96	public function count() {
97	return sizeof( $this->_data );
98	}
99	}
100