“PHP Code Optimization Tips” was trending in the Hatena Bookmark community, and it seems to be an article that was also trending on Hatena Bookmark several years ago.

・PHP コード最適化 Best Practices 63+ - カタコト日記

・PHPコード最適化Tipsのウソと本当(解説) - カタコト日記

・ウノウラボ by Zynga Japan: PHP最適化tipsまとめサイト

Since PHP can do many things with standard methods, reading summary articles like these helps you gain knowledge for efficient programming.

Using these articles as a starting point, it might be interesting to research various things like slow processing and standard methods.

That’s all from the Gemba.