--- title: Clarify security policy of disable_functions | daily.dev description: A PHP internals discussion proposing to add documentation warnings clarifying that disable_functions should not be relied upon as a security boundary. The... canonical: https://daily.dev/posts/clarify-security-policy-of-disable-functions-2vlqxcjhw twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Clarify security policy of disable_functions | daily.dev og:description: A PHP internals discussion proposing to add documentation warnings clarifying that disable_functions should not be relied upon as a security boundary. The... og:url: https://daily.dev/posts/clarify-security-policy-of-disable-functions-2vlqxcjhw og:image: https://api.daily.dev/og/posts/2vLQXcJHW.png og:image:alt: Clarify security policy of disable_functions 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. # Clarify security policy of disable_functions **[externals.io](https://daily.dev/sources/externals)** · 1 min read · 0 upvotes · 0 comments ## Summary A PHP internals discussion proposing to add documentation warnings clarifying that disable_functions should not be relied upon as a security boundary. The author draws a parallel to the existing open_basedir clarification, noting that PHP's security policy already rejects disable_functions bypass reports as security issues, yet the documentation still implies it provides meaningful protection. With well-known exploitable use-after-free vulnerabilities in PHP making shell access trivial for code-executing attackers, the proposal is to update docs to frame disable_functions as an extra safety net rather than a reliable security control. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Clarify security policy of disable\_functions](https://daily.dev/posts/clarify-security-policy-of-disable-functions-wu9skvjqj) · externals.io · 0 upvotes · 0 comments - [When static analysis runs your code](https://daily.dev/posts/when-static-analysis-runs-your-code-pueryt53u) · PHPUnit Expert · 1 upvotes · 0 comments --- Tags: [#security](https://daily.dev/tags/security), [#php](https://daily.dev/tags/php) [View this post on daily.dev](https://daily.dev/posts/clarify-security-policy-of-disable-functions-2vlqxcjhw) ```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":"Clarify security policy of disable_functions","url":"https://daily.dev/posts/clarify-security-policy-of-disable-functions-2vlqxcjhw","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/clarify-security-policy-of-disable-functions-2vlqxcjhw"},"datePublished":"2026-06-07T07:15:04.308Z","dateModified":"2026-06-07T07:15:23.194Z","description":"A PHP internals discussion proposing to add documentation warnings clarifying that disable_functions should not be relied upon as a security boundary. 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