These results are based on our legacy PHP analysis, consider migrating to our new PHP analysis engine instead. Learn more
1 | <?php |
||
0 ignored issues
–
show
|
|||
2 | |||
3 | require_once 'vendor/autoload.php'; |
||
4 | |||
5 | use Optional\Optional; |
||
6 | |||
7 | function getSome() |
||
0 ignored issues
–
show
The return type could not be reliably inferred; please add a
@return annotation.
Our type inference engine in quite powerful, but sometimes the code does not
provide enough clues to go by. In these cases we request you to add a ![]() |
|||
8 | { |
||
9 | $a = new FooBar(); |
||
10 | |||
11 | return Optional::Some($a); |
||
12 | } |
||
13 | |||
14 | function getNone() |
||
0 ignored issues
–
show
The return type could not be reliably inferred; please add a
@return annotation.
Our type inference engine in quite powerful, but sometimes the code does not
provide enough clues to go by. In these cases we request you to add a ![]() |
|||
15 | { |
||
16 | return Optional::None(FooBar::class); |
||
17 | } |
||
18 | |||
19 | print '<pre>'; |
||
20 | |||
21 | $some = getSome(); |
||
22 | |||
23 | var_dump($some->isSome(FooBar::class)); |
||
0 ignored issues
–
show
|
|||
24 | var_dump($some->extends(FooBar::class)); |
||
25 | var_dump($some->is(FooBar::class)); |
||
26 | var_dump($some->isNone()); |
||
27 | var_dump($some->getIdentifier()); |
||
28 | var_dump($some->may(FooBar::class)); |
||
29 | var_dump($some->unwrap()); |
||
30 | |||
31 | $some->may(FooBar::class)->foo()->bar(); |
||
32 | |||
33 | print PHP_EOL . str_repeat('=', 50) . PHP_EOL; |
||
34 | |||
35 | $none = getNone(); |
||
36 | |||
37 | var_dump($none->isSome(FooBar::class)); |
||
38 | var_dump($none->extends(FooBar::class)); |
||
39 | var_dump($none->is(FooBar::class)); |
||
40 | var_dump($none->isNone()); |
||
41 | var_dump($none->getIdentifier()); |
||
42 | var_dump($none->may(FooBar::class)); |
||
43 | var_dump($none->unwrap()); |
||
44 | |||
45 | $none->may(FooBar::class)->foo()->bar(); |
||
46 | |||
47 | print PHP_EOL . str_repeat('=', 50) . PHP_EOL; |
||
48 | |||
49 | $some = Optional::Some(42); |
||
50 | |||
51 | var_dump($some->isSome('int')); |
||
52 | var_dump($some->isSome('float')); |
||
53 | var_dump($some->isSome('numeric')); |
||
54 | var_dump($some->isSome('scalar')); |
||
55 | var_dump($some->isSome('string')); |
||
56 | var_dump($some->isSome('bool')); |
||
57 | var_dump($some->isSome('array')); |
||
58 | var_dump($some->isNone()); |
||
59 | var_dump($some->is('int')); |
||
60 | var_dump($some->is('float')); |
||
61 | var_dump($some->is('numeric')); |
||
62 | var_dump($some->is('scalar')); |
||
63 | var_dump($some->is('string')); |
||
64 | var_dump($some->is('bool')); |
||
65 | var_dump($some->is('array')); |
||
66 | var_dump($some->getIdentifier()); |
||
67 | var_dump($some->may('int')); |
||
68 | var_dump($some->unwrap()); |
||
69 | |||
70 | print PHP_EOL . str_repeat('=', 50) . PHP_EOL; |
||
71 | |||
72 | $none = Optional::None(); |
||
73 | |||
74 | var_dump($none->isSome('int')); |
||
75 | var_dump($none->isSome('float')); |
||
76 | var_dump($none->isSome('numeric')); |
||
77 | var_dump($none->isSome('scalar')); |
||
78 | var_dump($none->isSome('string')); |
||
79 | var_dump($none->isSome('bool')); |
||
80 | var_dump($none->isSome('array')); |
||
81 | var_dump($none->isNone()); |
||
82 | var_dump($none->is('int')); |
||
83 | var_dump($none->is('float')); |
||
84 | var_dump($none->is('numeric')); |
||
85 | var_dump($none->is('scalar')); |
||
86 | var_dump($none->is('string')); |
||
87 | var_dump($none->is('bool')); |
||
88 | var_dump($none->is('array')); |
||
89 | var_dump($none->getIdentifier()); |
||
90 | var_dump($none->may('int')); |
||
91 | var_dump($none->unwrap()); |
||
92 | |||
93 | |||
94 |
The PSR-1: Basic Coding Standard recommends that a file should either introduce new symbols, that is classes, functions, constants or similar, or have side effects. Side effects are anything that executes logic, like for example printing output, changing ini settings or writing to a file.
The idea behind this recommendation is that merely auto-loading a class should not change the state of an application. It also promotes a cleaner style of programming and makes your code less prone to errors, because the logic is not spread out all over the place.
To learn more about the PSR-1, please see the PHP-FIG site on the PSR-1.