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sculpin/source/_posts/2023-04-12.md

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+---
+title: >
+  Cleaner PHP code with promoted constructor properties
+pubDate: 2023-04-12
+permalink: >-
+  daily/2023/04/12/cleaner-php-code-with-promoted-constructor-properties
+tags:
+  - php
+---
+
+One of my favorite features that was introducted in PHP 8 was promoted constructor properties.
+
+If I'm passing arguments into a constructor, I can declare a visibility and it will be promoted to a property on the class.
+
+Here's an example of a value of a data transfer object that accepts a sort code and account number as strings:
+
+```language-php
+class AccountDetails {
+
+  public function __construct(
+    public string $accountNumber,
+    public string $sortCode,
+  ) {}
+
+}
+```
+
+Without promoted constructor properties, I'd need to create the properties and assign them manually, and I'd have this:
+
+```language-php
+class AccountDetails {
+
+  public string $accountNumber;
+
+  public string $sortCode;
+
+  public function __construct(
+    string $accountNumber,
+    string $sortCode,
+  ) {
+    $this->accountNumber = $accountNumber;
+    $this->sortCode = $sortCode;
+  }
+
+}
+```
+
+Whilst text editors and IDEs can create the properties automatically, I prefer this as it's less code, more readable and easier to understand.