--- title: Building Simple PHP DI Container | daily.dev description: The post explains how to implement a simple Dependency Injection (DI) Container in PHP, showcasing the benefits of DI for decoupling and enhancing flexibility... canonical: https://daily.dev/posts/tgb7u5c0f twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Building Simple PHP DI Container | daily.dev og:description: The post explains how to implement a simple Dependency Injection (DI) Container in PHP, showcasing the benefits of DI for decoupling and enhancing flexibility... og:url: https://daily.dev/posts/tgb7u5c0f og:image: https://api.daily.dev/og/posts/tgb7U5C0F.png og:image:alt: Post cover image og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Building Simple PHP DI Container **[PHP Dev](https://daily.dev/sources/phpdev)** · [@ghost](https://daily.dev/ghost) · 21 upvotes · 0 comments ## Summary The post explains how to implement a simple Dependency Injection (DI) Container in PHP, showcasing the benefits of DI for decoupling and enhancing flexibility in code. It demonstrates moving from tightly coupled components to a design where dependencies are injected, making the code easier to maintain and test. The post includes examples of refactoring classes to use DI and introduces a basic DI Container adhering to the PSR-11 standard. The final implementation is detailed with methods for setting and getting dependencies, utilizing the PHP Reflection API. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#dependency-injection](https://daily.dev/tags/dependency-injection), [#general-programming](https://daily.dev/tags/general-programming), [#php](https://daily.dev/tags/php) [View this post on daily.dev](https://daily.dev/posts/tgb7u5c0f) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"DiscussionForumPosting","mainEntityOfPage":"https://daily.dev/posts/tgb7u5c0f","headline":"Building Simple PHP DI Container","text":"Shared: Building Simple PHP DI Container","url":"https://daily.dev/posts/tgb7u5c0f","datePublished":"2024-07-09T04:00:48.585Z","dateModified":"2026-03-15T06:55:53.607Z","author":{"@type":"Person","name":"Deleted user","url":"https://daily.dev/ghost","image":"https://media.daily.dev/image/upload/s--hNIUzLiO--/f_auto/v1705327420/public/ghost_vlftth","interactionStatistic":{"@type":"InteractionCounter","interactionType":{"@type":"EndorseAction"},"userInteractionCount":35550}},"image":"https://media.daily.dev/image/upload/s--P4t4XyoV--/f_auto/v1722860399/public/Placeholder%2001","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":21},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"sharedContent":{"@type":"WebPage","url":"https://api.daily.dev/r/gN7EYrcct"},"isPartOf":{"@type":"WebPage","url":"https://daily.dev/squads/phpdev","name":"PHP Dev"}} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"PHP Dev","item":"https://daily.dev/squads/phpdev"},{"@type":"ListItem","position":3,"name":"Building Simple PHP DI Container"}]} ```