Config.php optimization avoid quadratic complexity with hashmap aka array in PHP ;) XD

[LLyaudet]

Description

I want to avoid quadratic complexity and nested loops.

Suggested changelog entry

Asymptotic complexity optimization on standards loops.

Related issues/external references

Fixes #

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
  • This change is only breaking for integrators, not for external standards or end-users.
• Documentation improvement
• Asymptotic optimization.

PR checklist

• I have checked there is no other PR open for the same change.
• I have read the Contribution Guidelines.
• I grant the project the right to include and distribute the code under the BSD-3-Clause license (and I have the right to grant these rights).
• [not needed] I have added tests to cover my changes.
• I have verified that the code complies with the projects coding standards.
• [Required for new sniffs] I have added XML documentation for the sniff.
• [Required for new files] I have added any new files to the package.xml file.

[jrfnl]

Please don't open PRs in this repo anymore. This repo is abandoned and https://github.com/PHPCSStandards/PHP_CodeSniffer is its successor. See: #3932

[LLyaudet]

Very strange. I was certain to be on the new repository when browsing code and found this. Probably yet another rewriting of what I do. I will check if the same optimization is possible on the other repository.

[LLyaudet]

Another question: May I ask why there are still 52 PRs open on this repository then?