Suggestion: only allow raising the memory limit

[jrfnl]

Currently when setting the memory limit, it will just be "hard" set to whatever value is passed:
$ phpcs -d memory_limit=32M /path/to/code

In most cases, the memory_limit is passed - either from the command line or the ruleset via <ini name="" value=""/> - to attempt to raise the memory limit, however, the existing memory limit is not checked, so in effect the memory_limit could currently be lowered.

Should a check be build in to only allow for raising the memory limit and to ignore (or raise a warning) about lowering the memory limit ?

[gsherwood]

Should a check be build in to only allow for raising the memory limit and to ignore (or raise a warning) about lowering the memory limit ?

I don't think PHPCS should be doing this. I think it should be setting the values that are passed in and performing the run as instructed.