--- title: New in PHP 8.6: Faster array_map with first-class callables description: PHP 8.6 introduces a performance improvement for array_map when used with first-class callables. A video by Tideways demonstrates how this change speeds up the... canonical: https://daily.dev/posts/new-in-php-8-6-faster-array-map-with-first-class-callables-q4tupjhnk twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: New in PHP 8.6: Faster array_map with first-class callables | daily.dev og:description: PHP 8.6 introduces a performance improvement for array_map when used with first-class callables. A video by Tideways demonstrates how this change speeds up the... og:url: https://daily.dev/posts/new-in-php-8-6-faster-array-map-with-first-class-callables-q4tupjhnk og:image: https://api.daily.dev/og/posts/Q4tuPjHNk.png og:image:alt: New in PHP 8.6: Faster array_map with first-class callables 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. # New in PHP 8.6: Faster array_map with first-class callables **[FREEK.DEV](https://daily.dev/sources/freek)** · 1 min read · 15 upvotes · 1 comments ## Summary PHP 8.6 introduces a performance improvement for array_map when used with first-class callables. A video by Tideways demonstrates how this change speeds up the function in practice. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### Does PHP 8.6 make array_map faster when using first-class callables? Yes, PHP 8.6 introduces a performance improvement to array_map specifically when first-class callable syntax is used, such as array_map(strtoupper(...), $array). The exact benchmark numbers and technical mechanism behind the speedup are demonstrated in a dedicated video walkthrough by Tideways rather than detailed in text form here. _Developers tracking PHP performance changes ahead of an 8.6 upgrade can follow updates like this on daily.dev._ ## Similar posts on daily.dev - [Partial Function Application is coming in PHP 8.6](https://daily.dev/posts/partial-function-application-is-coming-in-php-8-6-3doqxg6cm) · FREEK.DEV · 41 upvotes · 0 comments - [What's new in PHP 8.6](https://daily.dev/posts/what-s-new-in-php-8-6-eixar55ou) · stitcher.io · 103 upvotes · 7 comments --- Tags: [#performance](https://daily.dev/tags/performance), [#php](https://daily.dev/tags/php) [View this post on daily.dev](https://daily.dev/posts/new-in-php-8-6-faster-array-map-with-first-class-callables-q4tupjhnk) ```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":"TechArticle","headline":"New in PHP 8.6: Faster array_map with first-class callables","url":"https://daily.dev/posts/new-in-php-8-6-faster-array-map-with-first-class-callables-q4tupjhnk","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/new-in-php-8-6-faster-array-map-with-first-class-callables-q4tupjhnk"},"datePublished":"2026-07-15T12:32:27.229Z","dateModified":"2026-09-14T07:37:39.676Z","description":"PHP 8.6 introduces a performance improvement for array_map when used with first-class callables. 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