1 | <?php |
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2 | /** |
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3 | * |
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4 | */ |
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5 | |||
6 | namespace Mvc5\Config; |
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7 | |||
8 | use function count; |
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9 | |||
10 | trait Count |
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11 | { |
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12 | /** |
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13 | * @return int |
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14 | */ |
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15 | 4 | function count() : int |
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16 | { |
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17 | 4 | return count($this->config); |
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18 | } |
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19 | } |
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20 |
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: