|
1
|
|
|
<?php |
|
2
|
|
|
namespace WebServCo\Framework\Utils; |
|
3
|
|
|
|
|
4
|
|
|
final class Arrays |
|
5
|
|
|
{ |
|
6
|
|
|
public function removeEmptyValues(array $array) : array |
|
7
|
|
|
{ |
|
8
|
|
|
foreach ($array as $key => $value) { |
|
9
|
|
|
if (is_array($value)) { |
|
10
|
|
|
$array[$key] = self::removeEmptyValues($array[$key]); |
|
|
|
|
|
|
11
|
|
|
} |
|
12
|
|
|
if (empty($array[$key])) { |
|
13
|
|
|
unset($array[$key]); |
|
14
|
|
|
} |
|
15
|
|
|
} |
|
16
|
|
|
return $array; |
|
17
|
|
|
} |
|
18
|
|
|
|
|
19
|
|
|
/** |
|
20
|
|
|
* @param array[] $array |
|
21
|
|
|
* @param mixed $value |
|
22
|
|
|
*/ |
|
23
|
|
|
public function has(?array $array, $value) : bool |
|
24
|
|
|
{ |
|
25
|
|
|
if (!is_array($array)) { |
|
|
|
|
|
|
26
|
|
|
return false; |
|
27
|
|
|
} |
|
28
|
|
|
return in_array($value, $array); |
|
29
|
|
|
} |
|
30
|
|
|
|
|
31
|
|
|
/** |
|
32
|
|
|
* Get a value from an array if it exists, otherwise a specified default value. |
|
33
|
|
|
* For multi dimensional arrays please see ArrayStorage. |
|
34
|
|
|
* @param array[] $array |
|
35
|
|
|
* @param mixed $key |
|
36
|
|
|
* @param mixed $defaultValue |
|
37
|
|
|
* @return mixed |
|
38
|
|
|
*/ |
|
39
|
|
|
public static function get(array $array, $key, $defaultValue = false) |
|
40
|
|
|
{ |
|
41
|
|
|
return array_key_exists($key, $array) ? $array[$key] : $defaultValue; |
|
42
|
|
|
} |
|
43
|
|
|
|
|
44
|
|
|
/** |
|
45
|
|
|
* @param array[] $array |
|
46
|
|
|
*/ |
|
47
|
|
|
public static function isMultidimensional(array $array) : bool |
|
48
|
|
|
{ |
|
49
|
|
|
if (empty($array)) { |
|
50
|
|
|
return false; |
|
51
|
|
|
} |
|
52
|
|
|
return is_array($array[key($array)]); |
|
53
|
|
|
} |
|
54
|
|
|
|
|
55
|
|
|
/** |
|
56
|
|
|
* @param array<mixed> $array |
|
57
|
|
|
* @return array[] |
|
58
|
|
|
*/ |
|
59
|
|
|
public static function nullToEmptyString(array $array) : array |
|
60
|
|
|
{ |
|
61
|
|
|
foreach ($array as $key => $value) { |
|
62
|
|
|
if (is_null($value)) { |
|
63
|
|
|
$array[$key] = ''; |
|
64
|
|
|
} |
|
65
|
|
|
} |
|
66
|
|
|
return $array; |
|
67
|
|
|
} |
|
68
|
|
|
|
|
69
|
|
|
/** |
|
70
|
|
|
* Array power set (all element combinations) |
|
71
|
|
|
* |
|
72
|
|
|
* Original function credit: |
|
73
|
|
|
* "PHP Cookbook by David Sklar, Adam Trachtenberg" |
|
74
|
|
|
* 4.24. Finding All Element Combinations of an Array |
|
75
|
|
|
* https://www.oreilly.com/library/view/php-cookbook/1565926811/ch04s25.html |
|
76
|
|
|
* @param array[] $array |
|
77
|
|
|
* @return array[] |
|
78
|
|
|
*/ |
|
79
|
|
|
public static function powerSet(array $array) : array |
|
80
|
|
|
{ |
|
81
|
|
|
$results = [[]]; //initialize by adding the empty set |
|
82
|
|
|
foreach ($array as $element) { |
|
83
|
|
|
foreach ($results as $combination) { |
|
84
|
|
|
array_push($results, array_merge([$element], $combination)); |
|
85
|
|
|
} |
|
86
|
|
|
} |
|
87
|
|
|
// sort by number of elements descending |
|
88
|
|
|
$array1 = array_map('count', $results); |
|
89
|
|
|
array_multisort($array1, SORT_DESC, $results); |
|
90
|
|
|
|
|
91
|
|
|
return array_filter($results); // removes empty elements |
|
92
|
|
|
} |
|
93
|
|
|
|
|
94
|
|
|
/** |
|
95
|
|
|
* @param array<mixed> $array |
|
96
|
|
|
*/ |
|
97
|
|
|
public static function toUrlQueryString(array $array) : ?string |
|
98
|
|
|
{ |
|
99
|
|
|
if (empty($array)) { |
|
100
|
|
|
return null; |
|
101
|
|
|
} |
|
102
|
|
|
$queries = []; |
|
103
|
|
|
foreach ($array as $k => $v) { |
|
104
|
|
|
$queries[] = sprintf('%s=%s', $k, $v); |
|
105
|
|
|
} |
|
106
|
|
|
return '?' . implode('&', $queries); |
|
107
|
|
|
} |
|
108
|
|
|
} |
|
109
|
|
|
|
webservco /
framework
Loading history...