Livewire v4.3.5: SFC Detection Fix for PHP Attributes | Mohamed Said [Skip to content](#main) [ ![](https://cdn.msaied.com/01KT78WE565VEMM3PSNQAAB0MH.png) Mohamed SaidLaravel Backend Engineer ](https://www.msaied.com/public) - [Home](https://www.msaied.com/public) - [Projects](https://www.msaied.com/public/projects) - [Articles](https://www.msaied.com/public/articles) - [Certificates](https://www.msaied.com/public/certificates) - [About](https://www.msaied.com/public#about) [ Contact](https://www.msaied.com/public#contact) Menu Menu ---- Close - [HomeStart here](https://www.msaied.com/public) - [ProjectsCase studies](https://www.msaied.com/public/projects) - [ArticlesEngineering notes](https://www.msaied.com/public/articles) - [CertificatesCredentials](https://www.msaied.com/public/certificates) - [AboutHow I work](https://www.msaied.com/public#about) - [ContactGet in touch](https://www.msaied.com/public#contact) [Start a conversation](https://www.msaied.com/public#contact) [WhatsApp](https://wa.me/201094619204) [Email](mailto:hello@msaied.com) 1. 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Livewire v4.3.5 Released: Fix for SFC Detection with PHP Attribute Array Arguments [Livewire](https://www.msaied.com/public/articles?category=livewire) Livewire v4.3.5 Released: Fix for SFC Detection with PHP Attribute Array Arguments =================================================================================== Livewire v4.3.5 ships a targeted bug fix for Single File Component (SFC) detection when PHP attributes contain array arguments, resolving a parsing edge case introduced in the v4.x line. ![](https://cdn.msaied.com/01M22N44A70A5MC2S599JP0MPH.webp) [Mohamed Said](https://www.msaied.com/public#person) Published 3 Aug 2026 · Updated 3 Aug 2026 · 2 min read ShareCopy linkCopied ![Livewire v4.3.5 Released: Fix for SFC Detection with PHP Attribute Array Arguments](https://cdn.msaied.com/503/9678ed8dbf5d7a6f4f19ca7694cf241b.png) On this page +1. [Livewire v4.3.5: What Changed and Why It Matters](#livewire-v435-what-changed-and-why-it-matters) 2. [The Problem: SFC Detection Failing with PHP Attribute Array Arguments](#the-problem-sfc-detection-failing-with-php-attribute-array-arguments) 3. [The Fix](#the-fix) 4. [Should You Upgrade?](#should-you-upgrade) 5. [Key Takeaways](#key-takeaways) Livewire v4.3.5: What Changed and Why It Matters ------------------------------------------------ Released on 3 August 2026, **Livewire v4.3.5** is a focused patch release for the v4.x branch. It ships exactly one fix, but it addresses a real-world parsing edge case that could silently break Single File Component (SFC) detection in certain PHP codebases. ### The Problem: SFC Detection Failing with PHP Attribute Array Arguments Livewire v4 introduced support for Single File Components — a pattern where your Blade template lives inside the same PHP class file. The framework detects SFC syntax by parsing the PHP source of a component class. The bug fixed in this release caused that detection logic to fail when a **PHP attribute** on the component class (or its methods/properties) included an **array as one of its arguments**. For example, a component decorated like this: ```php #[SomeAttribute(['key' => 'value'])] class MyComponent extends Component { // ... } ``` The square brackets inside the attribute argument list were being misread by the SFC detector, causing it to incorrectly conclude that the file was not an SFC — even when it was. The practical result: your inline Blade template would not be picked up, and the component would silently fall back to looking for an external view file. ### The Fix Contributor [@joshhanley](https://github.com/joshhanley) resolved the issue in [PR #10480](https://github.com/livewire/livewire/pull/10480) by updating the SFC detection logic to correctly handle PHP attribute array arguments. The parser now distinguishes between the `[` / `]` delimiters used in PHP attribute syntax and those that signal the start of an SFC template block. ### Should You Upgrade? If your Livewire v4 components use PHP attributes with array arguments **and** you rely on Single File Components, this patch is directly relevant to you. Even if you haven't hit the bug yet, upgrading is low-risk — this is a single, well-scoped fix with no breaking changes. Upgrade via Composer: ```bash composer update livewire/livewire ``` Verify the installed version: ```bash composer show livewire/livewire | grep versions ``` ### Key Takeaways - **v4.3.5** contains one bug fix: corrected SFC detection when PHP attributes include array arguments. - The issue caused Livewire to miss inline Blade templates in affected components. - Fix contributed by [@joshhanley](https://github.com/joshhanley) via PR #10480. - No breaking changes; safe to apply immediately. - Upgrade with `composer update livewire/livewire`. --- *Source: [Livewire v4.3.5 release on GitHub](https://github.com/livewire/livewire/releases/tag/v4.3.5)* - [Livewire](https://www.msaied.com/public/articles?search=Livewire) - [Laravel](https://www.msaied.com/public/articles?search=Laravel) - [PHP](https://www.msaied.com/public/articles?search=PHP) - [Bug Fix](https://www.msaied.com/public/articles?search=Bug%20Fix) - [Single File Components](https://www.msaied.com/public/articles?search=Single%20File%20Components) Frequently asked questions --------------------------- What bug does Livewire v4.3.5 fix?It fixes a bug where Single File Component (SFC) detection incorrectly failed when a PHP attribute on the component contained an array as one of its arguments, causing Livewire to miss the inline Blade template. Do I need to change any code after upgrading to Livewire v4.3.5?No. The fix is internal to Livewire's SFC parser. Simply run `composer update livewire/livewire` and your components with PHP attribute array arguments will be detected correctly without any code changes. ![Mohamed Said](https://cdn.msaied.com/01M22N44A70A5MC2S599JP0MPH.webp)About the author ---------------- [Mohamed Said](https://www.msaied.com/public#person)Senior Backend Engineer specializing in Laravel, scalable SaaS platforms, APIs, and cloud infrastructure. I build secure, high-performance web applications that help businesses grow. [About](https://www.msaied.com/public#about) [GitHub ↗](https://github.com/EG-Mohamed) [LinkedIn ↗](https://www.linkedin.com/in/msaiedm/) [WhatsApp ↗](https://wa.me/201094619204) [Email Address ↗](mailto:hello@msaied.com) [My CV ↗](https://drive.google.com/file/u/0/d/1MF20IPRJyzfy32mhEutjL5EpSls0w2Q8/view) [Previous articleLaravel Filament v3 Custom Actions: Bulk, Table, and Header Actions Done Right](https://www.msaied.com/public/articles/laravel-filament-v3-custom-actions-bulk-table-and-header-actions-done-right) [Next articleLaravel Doctor: Diagnose Your Laravel App With One Artisan Command](https://www.msaied.com/public/articles/laravel-doctor-diagnose-your-laravel-app-with-one-artisan-command) On this page ------------- 1. [Livewire v4.3.5: What Changed and Why It Matters](#livewire-v435-what-changed-and-why-it-matters) 2. [The Problem: SFC Detection Failing with PHP Attribute Array Arguments](#the-problem-sfc-detection-failing-with-php-attribute-array-arguments) 3. [The Fix](#the-fix) 4. [Should You Upgrade?](#should-you-upgrade) 5. [Key Takeaways](#key-takeaways) ### Have a technical challenge? Tell me what you’re building. I reply within two working days. 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