[php-src] PR #23809: ext/standard: Optimize result-row construction in array_map() with a null callback
| From: | LamentXU123 | Date: | Mon, 21 Sep 2026 06:30:23 +0000 |
| Subject: | [php-src] PR #23809: ext/standard: Optimize result-row construction in array_map() with a null callback | ||
| Groups: | php.git-pulls | ||
| Request: | Send a blank email to git-pulls+get-38649@lists.php.net to get a copy of this message | ||
Pull Request: https://github.com/php/php-src/pull/23809
Author: LamentXU123
When
array_map() receives a null callback and multiple arrays, each result row has a
known size and consecutive integer keys.
In this case we just init each value once. No regressions intended.
| Input | reduction |
|---|---:|
| 2 arrays × 256 elements | 11.1% |
| 4 arrays × 256 elements | 21.1% |
| 16 arrays × 256 elements | 41.2% |