|
1
|
|
|
<?php |
|
2
|
|
|
/* |
|
3
|
|
|
* Copyright (c) Nate Brunette. |
|
4
|
|
|
* Distributed under the MIT License (http://opensource.org/licenses/MIT) |
|
5
|
|
|
*/ |
|
6
|
|
|
|
|
7
|
|
|
namespace Tebru\Realtype; |
|
8
|
|
|
|
|
9
|
|
|
/** |
|
10
|
|
|
* Class Realtype |
|
11
|
|
|
* |
|
12
|
|
|
* @author Nate Brunette <[email protected]> |
|
13
|
|
|
*/ |
|
14
|
|
|
class Realtype |
|
15
|
|
|
{ |
|
16
|
|
|
/** |
|
17
|
|
|
* Get the real type from a string |
|
18
|
|
|
* |
|
19
|
|
|
* @param string $var |
|
20
|
|
|
* @return bool|float|int|string |
|
21
|
|
|
*/ |
|
22
|
|
|
public static function get($var) |
|
23
|
|
|
{ |
|
24
|
|
|
// this function is only useful for values in strings |
|
25
|
|
|
if (!is_string($var)) { |
|
26
|
|
|
return $var; |
|
27
|
|
|
} |
|
28
|
|
|
|
|
29
|
|
|
// if the string is '0', it's an int |
|
30
|
|
|
if ('0' === $var) { |
|
31
|
|
|
return 0; |
|
32
|
|
|
} |
|
33
|
|
|
|
|
34
|
|
|
if (self::isDouble($var)) { |
|
35
|
|
|
return (float) $var; |
|
36
|
|
|
} |
|
37
|
|
|
|
|
38
|
|
|
if (self::isInt($var)) { |
|
39
|
|
|
return (int) $var; |
|
40
|
|
|
} |
|
41
|
|
|
|
|
42
|
|
|
if (self::isBool($var)) { |
|
43
|
|
|
return 'true' === $var; |
|
44
|
|
|
} |
|
45
|
|
|
|
|
46
|
|
|
if (self::isNull($var)) { |
|
47
|
|
|
return null; |
|
48
|
|
|
} |
|
49
|
|
|
|
|
50
|
|
|
// if we've gotten this far, it's a string |
|
51
|
|
|
return $var; |
|
52
|
|
|
} |
|
53
|
|
|
|
|
54
|
|
|
/** |
|
55
|
|
|
* Check if var is boolean |
|
56
|
|
|
* |
|
57
|
|
|
* 1. Do a check if the floatval() is 0, if so it's not a double |
|
58
|
|
|
* 2. Check if the intval() is the same as the floatval() |
|
59
|
|
|
* 2a. If they are the same, check if there's a decimal, if so it probably ends in .0 |
|
60
|
|
|
* |
|
61
|
|
|
* @param string $var |
|
62
|
|
|
* @return bool |
|
63
|
|
|
*/ |
|
64
|
|
|
private static function isDouble($var) |
|
65
|
|
|
{ |
|
66
|
|
|
return (bool) preg_match('/^\d*\.\d*$/', $var); |
|
67
|
|
|
} |
|
68
|
|
|
|
|
69
|
|
|
/** |
|
70
|
|
|
* Check if var is an int |
|
71
|
|
|
* |
|
72
|
|
|
* Only does an extra check for 0 after cast |
|
73
|
|
|
* |
|
74
|
|
|
* @param string $var |
|
75
|
|
|
* @return bool |
|
76
|
|
|
*/ |
|
77
|
|
|
private static function isInt($var) |
|
78
|
|
|
{ |
|
79
|
|
|
return (bool) preg_match('/^\d+$/', $var); |
|
80
|
|
|
} |
|
81
|
|
|
|
|
82
|
|
|
/** |
|
83
|
|
|
* Check if 'true' or 'false' is that value of var |
|
84
|
|
|
* |
|
85
|
|
|
* @param string $var |
|
86
|
|
|
* @return bool |
|
87
|
|
|
*/ |
|
88
|
|
|
private static function isBool($var) |
|
89
|
|
|
{ |
|
90
|
|
|
return 'true' === $var || 'false' === $var; |
|
91
|
|
|
} |
|
92
|
|
|
|
|
93
|
|
|
/** |
|
94
|
|
|
* Check if var is null |
|
95
|
|
|
* |
|
96
|
|
|
* @param string $var |
|
97
|
|
|
* @return bool |
|
98
|
|
|
*/ |
|
99
|
|
|
private static function isNull($var) |
|
100
|
|
|
{ |
|
101
|
|
|
return 'null' === $var; |
|
102
|
|
|
} |
|
103
|
|
|
} |
|
104
|
|
|
|
tebru /
realtype
