{"id":11904,"date":"2025-12-09T11:43:34","date_gmt":"2025-12-09T10:43:34","guid":{"rendered":"https:\/\/www.etixio.com\/blog\/symfony-7-4-or-8-0-how-to-choose-the-right-version-for-your-project-in-2025\/"},"modified":"2026-09-09T08:29:07","modified_gmt":"2026-09-09T06:29:07","slug":"symfony-7-4-or-8-0-how-to-choose-the-right-version-for-your-project-in-2025","status":"publish","type":"post","link":"https:\/\/www.etixio.com\/en\/blog\/symfony-7-4-or-8-0-how-to-choose-the-right-version-for-your-project-in-2025\/","title":{"rendered":"Symfony 7.4 or 8.0: How to Choose the Right Version for Your Project in 2025?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"11904\" class=\"elementor elementor-11904 elementor-4563\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-377b439 e-flex e-con-boxed e-con e-parent\" data-id=\"377b439\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-894b0cb elementor-widget elementor-widget-text-editor\" data-id=\"894b0cb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>The end of 2025 marks a pivotal moment for the <a href=\"https:\/\/www.etixio.com\/en\/our-expertise\/php-development-services\/\">PHP<\/a> ecosystem: Symfony is <strong>simultaneously<\/strong> releasing <strong>Symfony 7.4 (LTS)<\/strong> and <strong>Symfony 8.0<\/strong>. These two versions share <strong>exactly the same features<\/strong>, but have very different support strategies and levels of technical debt. <\/p><p>For the IT department, this is a real architectural decision:<\/p><ul><li>long-term stability,<\/li><li>vs. agility and continuous updates.<\/li><\/ul><p>For a development team, this is also an opportunity to <strong>thoroughly clean up the code<\/strong>, improve performance, and simplify maintenance.<\/p><p>In this article, we&#8217;ll help you:<\/p><ul><li>understand the differences between Symfony 7.4 LTS and Symfony 8.0,<\/li><li>identify the technical innovations that really matter,<\/li><li>develop a concrete migration plan,<\/li><li>Find out how <strong>Etixio<\/strong> can help you with these migrations.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2d0db2f e-flex e-con-boxed e-con e-parent\" data-id=\"2d0db2f\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3755547 elementor-widget elementor-widget-image\" data-id=\"3755547\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1198\" height=\"655\" src=\"https:\/\/www.etixio.com\/wp-content\/uploads\/2025\/12\/Symfony-7.4-8.0-v2.jpg\" class=\"attachment-full size-full wp-image-11901\" alt=\"Symfony 7.4 &amp; 8.0 \u2014 How to Choose the Right Version for Your Project in 2025?\" srcset=\"https:\/\/www.etixio.com\/wp-content\/uploads\/2025\/12\/Symfony-7.4-8.0-v2.jpg 1198w, https:\/\/www.etixio.com\/wp-content\/uploads\/2025\/12\/Symfony-7.4-8.0-v2-300x164.jpg 300w, https:\/\/www.etixio.com\/wp-content\/uploads\/2025\/12\/Symfony-7.4-8.0-v2-1024x560.jpg 1024w, https:\/\/www.etixio.com\/wp-content\/uploads\/2025\/12\/Symfony-7.4-8.0-v2-768x420.jpg 768w\" sizes=\"(max-width: 1198px) 100vw, 1198px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-abd6e5e e-flex e-con-boxed e-con e-parent\" data-id=\"abd6e5e\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a25ab06 elementor-widget elementor-widget-text-editor\" data-id=\"a25ab06\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<h2>1. Symfony 7.4 vs. Symfony 8.0: Same Features, Two Approaches<\/h2><p>Symfony has confirmed its dual-release model:<\/p><p style=\"padding-left: 40px;\"><strong>Symfony 8.0 = Symfony 7.4 without all the deprecated features.<\/strong><\/p><p>In short:<\/p><ul><li><strong>7.4<\/strong> includes <strong>the new features plus all compatibility layers<\/strong> (the \u201cBC layers\u201d).<\/li><li><strong>Version 8.0<\/strong> removes everything that is deprecated: a <strong>lighter, cleaner, and<\/strong> faster framework, but one that is incompatible with code that still uses the old APIs.<\/li><\/ul><p> <\/p><h3>1.1. Support Period: LTS vs. Regular Version<\/h3><p>Symfony 7.4 is the <strong>LTS (Long-Term Support) version<\/strong>; Symfony 8.0 is a <strong>\u201cregular\u201d version.<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-09846f9 e-flex e-con-boxed e-con e-parent\" data-id=\"09846f9\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-b72d62a e-grid e-con-full e-con e-child\" data-id=\"b72d62a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5663a70 elementor-widget elementor-widget-text-editor\" data-id=\"5663a70\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: center;\"><strong>Version<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7b5b5e4 elementor-widget elementor-widget-text-editor\" data-id=\"7b5b5e4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: center;\"><strong>Type<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-77b493d elementor-widget elementor-widget-text-editor\" data-id=\"77b493d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: center;\"><strong>Bugs fixed up to<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4585497 elementor-widget elementor-widget-text-editor\" data-id=\"4585497\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: center;\"><strong>Safety up to<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6dd524d elementor-widget elementor-widget-text-editor\" data-id=\"6dd524d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: center;\"><strong>What&#8217;s New in Symfony?<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8f5e69e elementor-widget elementor-widget-text-editor\" data-id=\"8f5e69e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: center;\">Symfony 7.4<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-70b3867 elementor-widget elementor-widget-text-editor\" data-id=\"70b3867\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: center;\">LTS<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-905dde9 elementor-widget elementor-widget-text-editor\" data-id=\"905dde9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: center;\">Nov. 2028<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1159ec7 elementor-widget elementor-widget-text-editor\" data-id=\"1159ec7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: center;\">Nov. 2029<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cbadc11 elementor-widget elementor-widget-text-editor\" data-id=\"cbadc11\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: center;\">No new features between 7.4 and 8.4<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8cf8461 elementor-widget elementor-widget-text-editor\" data-id=\"8cf8461\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: center;\">Symfony 8.0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-54ebc9a elementor-widget elementor-widget-text-editor\" data-id=\"54ebc9a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: center;\">Regular<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0c96e12 elementor-widget elementor-widget-text-editor\" data-id=\"0c96e12\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: center;\">July 2026<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ca6134e elementor-widget elementor-widget-text-editor\" data-id=\"ca6134e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: center;\">July 2026<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7b4f0af elementor-widget elementor-widget-text-editor\" data-id=\"7b4f0af\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p style=\"text-align: center;\">Yes, through 8.1, 8.2, 8.3, 8.4\u2026<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c6fbb92 elementor-widget elementor-widget-text-editor\" data-id=\"c6fbb92\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Symfony&#8217;s official recommendation is to opt <strong>for regular releases whenever possible<\/strong> and to upgrade regularly from 8.0 \u2192 8.1 \u2192 8.2\u2026 rather than staying on an LTS release for a long time.<\/p><p><strong>In practical terms:<\/strong><\/p><ul><li><strong>Choosing Symfony 7.4 LTS<\/strong> makes sense if:<ul><li>You have a highly sensitive business application (banking, healthcare, manufacturing),<\/li><li>update cycles are time-consuming,<\/li><li>You prioritize maximum short-term stability, even if it means carrying out a <strong>major migration<\/strong> later on.<\/li><\/ul><\/li><li><strong>Choosing Symfony 8.0<\/strong> makes sense if:<ul><li>You can schedule <strong>updates every 6 months,<\/strong><\/li><li>If you want to stay up to date with the latest features of the framework,<\/li><li>You&#8217;d rather <strong>spread out the migration effort<\/strong> over time rather than go through it every two years.<\/li><\/ul><\/li><\/ul><p>At Etixio, we recommend:<\/p><p style=\"padding-left: 40px;\"><strong>7.4 LTS<\/strong> for mission-critical, highly constrained applications;<br\/><strong>8.0<\/strong> (then 8.1, 8.2\u2026) as soon as the team and project context allow.<\/p><h2>2. Prerequisites: Symfony 8.0 requires PHP 8.4<\/h2><p>Symfony 8.0 has made a bold choice: it <strong>requires at least PHP 8.4.<\/strong><br\/>Why is this important to you?<\/p><ul><li><strong>Security<\/strong>: <a href=\"https:\/\/www.etixio.com\/en\/blog\/symfony-7-4-or-8-0-how-to-choose-the-right-version-for-your-project-in-2025\/\">PHP 8.4<\/a> is one of the versions that are actively maintained and patched.<\/li><li><strong>Performance<\/strong>: Symfony&#8217;s core takes advantage of the latest language optimizations.<\/li><li><strong>Syntax &#038; DX<\/strong>: improved handling of types, attributes, modern structures, etc.<\/li><\/ul><p><strong>Before we even talk about Symfony,<\/strong> the first question to ask is:<\/p><p style=\"padding-left: 40px;\"><em>\u201cIs our infrastructure ready for PHP 8.4 (servers, Docker, CI\/CD, extensions, dependencies)?\u201d<\/em><\/p><p>At Etixio, we usually start by:<\/p><ul><li>a <strong>PHP 8.4<a href=\"https:\/\/www.etixio.com\/nos-solutions\/audit-technique\/\">compatibility audit<\/a>,<\/strong><\/li><li>and then the gradual migration of the environment,<\/li><li>before diving into the <a href=\"https:\/\/www.etixio.com\/nos-expertises\/developpement-symfony\/\">Symfony application core<\/a>.<\/li><\/ul><h2>3. FormFlow: Finally, Clean, Multi-Step Forms<\/h2><p>This is one of the most noticeable changes from a developer\u2019s perspective: <strong>\u201cform flows\u201d are coming as a native feature.<\/strong><\/p><p>Until now, for a multi-step form (registration wizard, onboarding, product setup, etc.), you had to:<\/p><ul><li>manage the session manually,<\/li><li>track the user&#8217;s progress,<\/li><li>create some &#8220;Previous&#8221; and &#8220;Next&#8221; buttons,<\/li><li>handle partial validation, intermediate statuses, etc.<\/li><\/ul><p>With <strong>FormFlow<\/strong>, Symfony introduces a dedicated concept:<\/p><ul><li>we extend <span style=\"color: #339966;\">AbstractFlowType<\/span> instead of<span style=\"color: #339966;\">AbstractType<\/span>,<\/li><li>Steps are declared using <span style=\"color: #339966;\">addStep()<\/span>,<\/li><li>We add a \u201cnavigator\u201d for automatic navigation.<\/li><\/ul><p><strong>Simplified example:<\/strong><br\/><span style=\"color: #339966;\">use Symfony\\Component\\Form\\Flow\\AbstractFlowType;<\/span><br\/><span style=\"color: #339966;\">use Symfony\\Component\\Form\\Flow\\FormFlowBuilderInterface;<\/span><\/p><p><span style=\"color: #339966;\">class UserSignUpFlowType extends AbstractFlowType<\/span><br\/><span style=\"color: #339966;\">{<\/span><\/p><p style=\"padding-left: 40px;\"><span style=\"color: #339966;\">public function buildFormFlow(FormFlowBuilderInterface $builder, array $options): void<\/span><br><span style=\"color: #339966;\"><span><\/span><\/p><p style=\"padding-left: 80px;\"><span style=\"color: #339966;\">$builder-&gt;addStep(&#8216;personal&#8217;, UserSignUpPersonalType::class);<\/span><br\/><span style=\"color: #339966;\">$builder -&gt;addStep(&#8216;professional&#8217;, UserSignUpProfessionalType::class);<\/span><\/p><p style=\"padding-left: 40px;\"><span style=\"color: #339966;\">$builder -&gt;add(&#8216;navigator&#8217;, NavigatorFlowType::class);<\/span><br><span style=\"color: #339966;\"><\/span><\/span><\/p><p><span style=\"color: #339966;\">}<\/span><\/p><p>In the controller, we work with a <strong>flow<\/strong> rather than a simple form:<\/p><ul><li><span style=\"color: #339966;\">isFinished()<\/span> to determine when the process is complete,<\/li><li><span style=\"color: #339966;\">getStepForm()<\/span> to display only the current step.<\/li><\/ul><p>Result:<\/p><ul><li>less &#8220;glue&#8221; code,<\/li><li>a more declarative approach,<\/li><li>complex forms (multi-step, conditional) that are much easier to maintain.<\/li><\/ul><h2>4. Configuration: The End of XML, the Rise of Typed PHP<\/h2><p>Symfony continues its extensive modernization of the configuration:<\/p><ul><li><strong>XML is officially deprecated in version 7.4 and removed in version 8.0.<\/strong><\/li><li>The <strong>\u201cfluent PHP config\u201d<\/strong> is also being phased out in favor of a simpler PHP format.<\/li><\/ul><h3>4.1. The New Format: PHP \u201cArray Shapes\u201d<\/h3><p>Symfony introduces a PHP configuration format based on <strong>typed arrays (\u201carray shapes\u201d):<\/strong><\/p><ul><li>The syntax looks like YAML,<\/li><li>But we&#8217;re sticking <strong>with pure PHP<\/strong>, using:<ul><li><strong>autocomplete<\/strong> in the IDE,<\/li><li><strong>static analysis<\/strong> (PHPStan\/Psalm),<\/li><li><strong>type validation.<\/strong><\/li><\/ul><\/li><\/ul><p>A typical example:<\/p><p><span style=\"color: #339966;\">\/\/ config\/packages\/security.php<\/span><br\/><span style=\"color: #339966;\">namespace Symfony\\Component\\DependencyInjection\\Loader\\Configurator;<\/span><\/p><p><span style=\"color: #339966;\">use Symfony\\Component\\DependencyInjection\\Loader\\Configurator\\App;<\/span><\/p><p><span style=\"color: #339966;\">return App::config([<\/span><\/p><p style=\"padding-left: 40px;\"><span style=\"color: #339966;\">&#8216;security&#8217; =&gt; [<\/span><\/p><p style=\"padding-left: 80px;\"><span style=\"color: #339966;\">&#8216;firewalls&#8217; =&gt; [<\/span><\/p><p style=\"padding-left: 120px;\"><span style=\"color: #339966;\">&#8216;main&#8217; =&gt; [<\/span><\/p><p style=\"padding-left: 160px;\"><span style=\"color: #339966;\">&#8216;pattern&#8217; =&gt; &#8216;^\/*&#8217;,<\/span><br\/><span style=\"color: #339966;\">&#8216;lazy&#8217; =&gt; true,<\/span><br\/><span style=\"color: #339966;\">&#8216;anonymous&#8217; =&gt; true,<\/span><\/p><p style=\"padding-left: 120px;\"><span style=\"color: #339966;\">],<\/span><\/p><p style=\"padding-left: 80px;\"><span style=\"color: #339966;\">],<\/span><br\/><span style=\"color: #339966;\">&#8216;access_control&#8217; =&gt; [<\/span><\/p><p style=\"padding-left: 120px;\"><span style=\"color: #339966;\">[&#8216;path&#8217; =&gt; &#8216;^\/admin&#8217;, &#8216;roles&#8217; =&gt; &#8216;ROLE_ADMIN&#8217;],<\/span><\/p><p style=\"padding-left: 80px;\"><span style=\"color: #339966;\">],<\/span><\/p><p style=\"padding-left: 40px;\"><span style=\"color: #339966;\">],<\/span><\/p><p><span style=\"color: #339966;\">]);<\/span><\/p><p>For teams:<\/p><ul><li><strong>Dev &#038; lead dev<\/strong>: a format aligned with modern tools, making it easier to review and refactor.<\/li><li><strong>Organization<\/strong>: The configuration becomes easier <strong>to navigate<\/strong> and more <strong>reliable<\/strong> over the long term.<\/li><\/ul><p>YAML is, of course, still supported, and its autocompletion has also been improved using JSON schemas.<\/p><h2>5. JSON, Mapping, and Data: Symfony is Stepping Up Its Game on the API Front<\/h2><p>Symfony is stepping up its game for <strong>API-oriented<\/strong> and <strong>data-intensive<\/strong> applications <strong>.<\/strong><\/p><p>Three components, introduced in version 7.3, are now<strong> stable and fully supported:<\/strong><\/p><ol><li><strong>JsonPath<\/strong><ul><li>Allows you to<strong> query complex JSON structures<\/strong> using a dedicated syntax.<\/li><li>Very useful for handling responses from third-party APIs.<\/li><\/ul><\/li><li><strong>JsonStreamer<br><\/strong><ul><li>Encodes and decodes JSON <strong>very quickly<\/strong> and with <strong>minimal memory usage.<\/strong><\/li><li>Perfect for high-volume data flows (exports, ETL, microservices).<\/li><\/ul><\/li><li><strong>ObjectMapper<\/strong><\/li><\/ol><ul><li style=\"list-style-type: none;\"><ul><li>Simplifies mapping between <strong>entities, DTOs, API payloads<\/strong>, etc.<\/li><li>It saves a tremendous amount of time on all the \u201cplumbing\u201d involved in data transformation, especially when working with collections.<\/li><\/ul><\/li><\/ul><h3>5.1. Improved management of \u201cbusiness\u201d dates<\/h3><p>The new form options (<span style=\"color: #339966;\">input=&#8221;date_point<\/span>&#8220;) and dedicated Doctrine types (<span style=\"color: #339966;\">DayPointType, TimePointType<\/span>) finally make it possible to <strong>clearly separate:<\/strong><\/p><ul><li>&#8220;<strong>absolute<\/strong>&#8221; dates (such as a birthday or a due date that does not depend on a time zone),<\/li><li>specific moments in time.<\/li><\/ul><p>For business applications (contracts, subscriptions, reservations), this is a real plus in terms of reliability: fewer surprises related to time zones.<\/p><h2>6. Code Quality &#038; Security: Symfony Is Getting Stricter (And That&#8217;s Good News)<\/h2><p>Versions 7.4 and 8.0 also provide an opportunity to <strong>remove ambiguous APIs<\/strong> and <strong>reinforce best practices.<\/strong><\/p><h3>6.1. End of Request::get()<\/h3><p>The <span style=\"color: #339966;\">$request-&gt;get(&#8216;id&#8217;)<\/span> method is <strong>deprecated in 8.0.<\/strong><\/p><p>Why?<br>Because it combined the following elements into a single method:<\/p><ul><li>route parameters,<\/li><li>query string,<\/li><li>POST payload.<\/li><\/ul><p>Result:<\/p><ul><li>less readable code,<\/li><li>risk of collisions,<\/li><li>a larger attack surface in the event of a failed validation.<\/li><\/ul><p>From now on, we need to be explicit:<\/p><p><span style=\"color: #339966;\">$request -&gt;attributes -&gt;get(&#8216;id&#8217;); \/\/ route parameters<\/span><br><span style=\"color: #339966;\">$request -&gt;query -&gt;get(&#8216;page&#8217;); \/\/ ?page=&#8230;<\/span><br><span style=\"color: #339966;\">$request-&gt;request-&gt;get(&#8217;email&#8217;); \/\/ POST data<\/span><\/p><p>Or better yet: use the mapping attributes (<span style=\"color: #339966;\">#[MapQueryParameter]<\/span>,<span style=\"color: #339966;\"> #[MapRequestPayload]<\/span>, etc.) directly in the controllers.<\/p><h3>6.2. Console Commands: Making Way for &#8220;Invokable&#8221; Commands<\/h3><p><strong>Invocable commands<\/strong> are becoming much more powerful:<\/p><ul><li>a single class,<\/li><li>an<span style=\"color: #339966;\"> __invoke()<\/span> method,<\/li><li>attributes such as <span style=\"color: #339966;\">#[Argument]<\/span>,<span style=\"color: #339966;\"> #[Input]<\/span>, <span style=\"color: #339966;\">#[Ask]<\/span>, and<span style=\"color: #339966;\"> #[Interact]<\/span> to handle arguments and user interaction.<\/li><\/ul><p>It&#8217;s more readable, more distinctive, and easier to test.<\/p><h3>6.3. Default UUID v7 and video validation<\/h3><p>Symfony promotes the use<strong>of UUID v7<\/strong> (with a timestamp component), which is better suited for database indexing and sorting.<\/p><p>There is also a new &#8221; <span style=\"color: #339966;\">Video<\/span> &#8221; constraint for validating video files (duration, format, dimensions, etc.) using FFmpeg.<\/p><h2>7. Migration Plan: Where to Start?<\/h2><p>If you&#8217;re currently using Symfony 5.x, 6.x, or 7.0\u20137.3, here&#8217;s a<strong> realistic plan<\/strong> for upgrading to 7.4 \/ 8.0:<\/p><ol><li><strong>Upgrade the Infrastructure<\/strong><ul><li>Migrate to <strong>PHP 8.4<\/strong> (or at least prepare the environment for the migration)<\/li><li>Check extensions, Docker images, CI pipelines, etc.<\/li><\/ul><\/li><li><strong>First, upgrade to Symfony 7.4<\/strong><ul><li>This is the \u201cpatch\u201d version, which includes all the features of 8.0 <strong>along with<\/strong> the deprecated features.<\/li><\/ul><\/li><li><strong><strong><strong>Tracking Depreciation<br><\/strong><\/strong><\/strong><p>by running the tests with:<\/p><p><span style=\"color: #339966;\">php bin\/phpunit &#8211;display-deprecations<\/span><\/p><ul><li>correct what comes from the project code,<\/li><li>Track depreciation issues related to bundles and dependencies.<\/li><\/ul><\/li><li><strong>Clear the configuration<\/strong><ul><li>gradually migrate from XML to YAML or PHP,<\/li><li>Adopt the new PHP formats where it makes sense.<\/li><\/ul><\/li><li><strong>Switch to Symfony 8.0<\/strong><ul><li>Once the depreciation issues have been corrected, the transition is much smoother,<\/li><li>However, plan for a <a href=\"https:\/\/www.etixio.com\/nos-expertises\/qa-testeur\/\">QA \/performance testing phase<\/a> to validate the changes.<\/li><\/ul><\/li><li><strong>Establish a schedule for updates<\/strong><ul><li>Plan the 8.1, 8.2, 8.3, and 8.4 upgrades,<\/li><li>Include depreciation management in the project&#8217;s &#8220;normal&#8221; technical debt.<\/li><\/ul><\/li><\/ol><h2>8. How Etixio Can Help You<\/h2><p>At Etixio, our Symfony teams are already helping clients with this transition to <strong>Symfony 7.4 \/ 8.0<\/strong>:<\/p><ul><li><strong>Symfony &#038; PHP 8.4 Audit<\/strong><ul><li>status report: version, dependencies, configuration, performance, security,<\/li><li>Mapping of impairments and risks.<\/li><\/ul><\/li><li><strong>Custom Migration Plan<\/strong><ul><li>choice between 7.4 LTS and 8.0 (or both versions),<\/li><li>A detailed roadmap tailored to your product and business requirements.<\/li><\/ul><\/li><li><strong>Implementation<\/strong><ul><li>refactoring legacy code,<\/li><li>Migration of complex forms to FormFlow,<\/li><li>configuration modernization (PHP array shapes, end of XML),<\/li><li>API optimization (JsonStreamer, ObjectMapper, JsonPath).<\/li><\/ul><\/li><li><strong>Team Support<\/strong><ul><li>pair programming with your developers,<\/li><li>knowledge transfer regarding new Symfony practices,<\/li><li>helps establish a regular (and less painful) update cycle.<\/li><\/ul><\/li><\/ul><h2>In summary<\/h2><ul><li><strong>7.4 and 8.0 have the same features<\/strong>: the difference lies in technical debt and support.<\/li><li><strong>8.0 requires PHP 8.4<\/strong> and makes full use of the language&#8217;s modern features.<\/li><li><strong>FormFlow, the new PHP configuration, JsonStreamer\/ObjectMapper\/JsonPath, and the new validation constraints<\/strong> represent a significant leap in quality for serious projects.<\/li><\/ul><p>If you&#8217;d like to:<\/p><ul><li>Prepare for your <strong>Symfony 8 migration,<\/strong><\/li><li>ensure your technical decisions are sound,<\/li><li>or have an existing Symfony application audited before a redesign,<\/li><\/ul><p>We can <strong><a href=\"https:\/\/www.etixio.com\/en\/contact-us\/?sujet=J\u2019ai-un-projet-web-ou-mobile-\u00e0-d\u00e9velopper-sur-mesure\">discuss this and work together<\/a> <\/strong>a concrete plan tailored to your situation.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>The end of 2025 marks a pivotal moment for the PHP ecosystem: Symfony is simultaneously releasing Symfony 7.4 (LTS) and Symfony 8.0. These two versions share exactly the same features, but have very different support strategies and levels of technical debt. For the IT department, this is a real architectural decision: long-term stability, vs. agility [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":11901,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[49],"tags":[101],"class_list":["post-11904","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tech","tag-symfony"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.etixio.com\/en\/wp-json\/wp\/v2\/posts\/11904","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.etixio.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.etixio.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.etixio.com\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.etixio.com\/en\/wp-json\/wp\/v2\/comments?post=11904"}],"version-history":[{"count":1,"href":"https:\/\/www.etixio.com\/en\/wp-json\/wp\/v2\/posts\/11904\/revisions"}],"predecessor-version":[{"id":11905,"href":"https:\/\/www.etixio.com\/en\/wp-json\/wp\/v2\/posts\/11904\/revisions\/11905"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.etixio.com\/en\/wp-json\/wp\/v2\/media\/11901"}],"wp:attachment":[{"href":"https:\/\/www.etixio.com\/en\/wp-json\/wp\/v2\/media?parent=11904"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.etixio.com\/en\/wp-json\/wp\/v2\/categories?post=11904"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.etixio.com\/en\/wp-json\/wp\/v2\/tags?post=11904"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}