1 | <?php declare(strict_types=1); |
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2 | /** |
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3 | * This file is part of the daikon-cqrs/data-structure project. |
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4 | * |
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5 | * For the full copyright and license information, please view the LICENSE |
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6 | * file that was distributed with this source code. |
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7 | */ |
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8 | |||
9 | namespace Daikon\DataStructure; |
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10 | |||
11 | use Countable; |
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12 | use Ds\Map; |
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13 | use IteratorAggregate; |
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14 | |||
15 | interface MapInterface extends IteratorAggregate, Countable |
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16 | { |
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17 | public function keys(): array; |
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18 | |||
19 | public function empty(): self; |
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20 | |||
21 | public function has(string $key): bool; |
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22 | |||
23 | /** |
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24 | * @param mixed $default |
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25 | * @return mixed |
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26 | */ |
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27 | public function get(string $key, $default = null); |
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28 | |||
29 | /** @param mixed $value */ |
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30 | public function with(string $key, $value): self; |
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31 | |||
32 | public function without(string $key): self; |
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33 | |||
34 | /** @return mixed */ |
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35 | public function first(); |
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36 | |||
37 | /** @return mixed */ |
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38 | public function last(); |
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39 | |||
40 | public function isEmpty(): bool; |
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41 | |||
42 | /** @psalm-suppress MissingParamType */ |
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43 | public function equals($comparator): bool; |
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44 | |||
45 | public function unwrap(): array; |
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46 | |||
47 | public function getIterator(): Map; |
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48 | |||
49 | /** @return mixed */ |
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50 | public function __get(string $key); |
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51 | } |
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52 |
Let?s assume that you have a directory layout like this:
and let?s assume the following content of
Bar.php
:If both files
OtherDir/Foo.php
andSomeDir/Foo.php
are loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.php
However, as
OtherDir/Foo.php
does not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php
, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: