Before installation, TYPO3 checks whether all installation requirements are met. Among other things, TYPO3 also checks whether the memory_limit in the php.ini of the XAMPP installation is restricted. In our case, we had limited it to 2,048 MB:
memory_limit=2048M. Nevertheless, the warning "Unlimited memory limit for PHP" continued to appear before the TYPO3 installation. The detailed message was:
"PHP is configured not to limit memory usage at all. This is a risk and should be avoided in production setup. In general it's best practice to limit this. To be safe, set a limit in PHP, but with a minimum of 128MB: memory_limit=128M".
Solution to the "problem": Simply set the memory_limit to a value below this threshold, e.g. 2,047 MB. The message then disappears — TYPO3 therefore considers limits of 2,048 MB and above to be too high. Observed in TYPO3 v8.7.22.
