… token_get_all (nicolas-grekas, peteward)This PR was merged into the 2.3 branch.Discussion----------Fix performance (PHP5) and memory (PHP7) issues when using token_get_all| Q             | A| ------------- | ---| Bug fix?      | yes| New feature?  | no| BC breaks?    | no| Deprecations? | no| Tests pass?   | yes| Fixed tickets |#16868| License       | MIT| Doc PR        | -Although it's not the case anymore on PHP 7, on PHP 5, `is_array` checks are much slower than `isset` checks.Also from@peteward in#17384:>  New PHP7 memory manager will not release small buckets to OS automatically in cases exposed by `token_get_all()`. This function call addition specifically for PHP7 will reclaim this memory to keep the footprint down of long processe> See above ticket and suggested actions by PHP internals team for long-running tasks (https://bugs.php.net/70098) - I think `cache:clear/warmup` on a heavy app justifies this.> We're running on cloud-based hosting platforms under memory limitations (Platform.sh). When memory is exceeded we're into swap and the cache clearing process goes from seconds to minutes for the initial deployment, which really slows our development workflow and also causes holding page delays.Commits-------e555aad Add gc_mem_caches() call for PHP7 after itoken_get_all() as new memory manager will not release small buckets to OS automaticallyd1f72d8 Fix perf and mem issue when using token_get_all