---
title: "Breaking: #62914 - Early check for PHP 5.5 in Install Tool"
manual: "TYPO3 Core Changelog"
version: "main"
permalink: "https://docs.typo3.org/permalink/changelog:breaking-62914"
source: "Changelog/7.0/Breaking-62914-EarlyCheckPHP55InInstallTool.rst"
typo3-version: "7.0"
typo3-major: 7
type: "breaking"
issue: 62914
forge: "https://forge.typo3.org/issues/62914"
tags: ["PHP-API"]
rendered: "2026-09-17T21:17:42+00:00"
---

# Breaking: #62914 - Early check for PHP 5.5 in Install Tool {#breaking-62914-early-check-for-php-5-5-in-install-tool}

See [forge#62914](https://forge.typo3.org/issues/62914)

## Description {#description}

PHP 5.5 or above is a requirement for TYPO3 CMS7. As code is using specific PHP 5.5 features, an
early check is required in Install Tool.

## Impact {#impact}

Install Tool will throw an exception if PHP 5.5 or above is not detected.

## Affected installations {#affected-installations}

Any installation without at least PHP 5.5.0.

## Migration {#migration}

Upgrade to PHP 5.5 or above.