Move daily emails into the blog page
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38
source/_posts/2024-05-04.md
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source/_posts/2024-05-04.md
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---
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title: Strict typing in PHP
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date: 2024-05-04
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permalink: daily/2024/05/04/strict-typing-in-php
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tags:
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- software-development
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- php
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cta: ~
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snippet: |
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Do you enable strict types in your PHP code?
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---
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I prefer writing and working with strictly typed code.
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One of the major improvements in PHP has been the option to enable strict types.
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For example, this code will usually not error and give the result:
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```php
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function add(int $a, int $b): void
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{
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var_dump($a + $b);
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}
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add(1, '1');
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```
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However, I'd prefer if it failed as I'm passing the function an integer and a string, but specifying they should both be integers.
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Fixing this is simple, by adding this line to the top of the file:
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```php
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declare(strict_types=1);
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```
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I add this to every PHP file by default.
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I want my code to be as strict and predictable as possible, and to error when I want it to and make any bugs more explicit and easier to find and fix.
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