---
title: "Implementing Custom Conditions"
manual: "TYPO3 Explained"
version: "11.5"
permalink: "https://docs.typo3.org/permalink/t3coreapi:typoscript-syntax-implementing-custom-conditions@11.5"
source: "Configuration/TypoScriptSyntax/TypoScriptParserApi/CustomConditions.rst"
rendered: "2026-10-21T15:30:00+00:00"
---

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# Implementing Custom Conditions {#typoscript-syntax-implementing-custom-conditions}

As conditions are implemented via Symfony Expression Language, extensions are
documented in section [Symfony Expression Language within TypoScript
Conditions](https://docs.typo3.org/permalink/t3coreapi:sel-within-typoscript-conditions@11.5).