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Create: 2025-04-28 Update: 2025-06-30 04:20:01

FastExcelWriter — избавление от проклятия PhpSpreadsheet

Наверняка каждый php-разработчик, хоть раз сталкивавшийся с чтением или записью Excel-файлов, знает про библиотеку PhpSpreadsheet (в прошлом - PHPExcel). Это мощная библиотека на чистом php, которая позволяет читать, а, главное, создавать Excel-таблицы. И все с ней хорошо, пока работаешь с небольшим набором данных. Но при работе с большими файлами PhpSpreadsheet начинает чудовищно отжирать память, да и производительность резко падает, и php-скрипт, использующий библиотеку, часто просто отваливается по таймауту. И проблема - в архитектуре библиотеки.

Библиотека PhpSpreadsheet, казалось бы, спроектирована очень правильно: листы таблицы, строки, ячейки, прочие сущности - это все классы, стили, форматы и всевозможные свойства тоже состоят из классов. И когда создается таблица, то в памяти создается огромное количество связанных между собой объектов, им задаются свойства, выполняются всевозможные манипуляции, ячейки заполняются данными, всё-всё это держится в памяти, и пишется в файл только в момент сохранения.

https://habr.com/ru/articles/904710/

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How to Create a Custom Theme in Telegram for Desktop and Mobile

Like most instant messaging apps, Telegram helps facilitate communication. Its increasing popularity among social media users can be largely attributed to its enhanced privacy and encryption features. Also, its support for large group chat features has seen the app’s user count grow to 700 million monthly active users. The app has introduced several personalization features to maintain the interests of its users. One of such personalization options available to users is the creation of customized themes. Instead of using the default theme that typically comes with the Telegram app, users can now create theirs. Users can also share the created themes with the public. Here’s how you can create a custom Telegram theme on your desktop or mobile.

FastExcelWriter — избавление от проклятия PhpSpreadsheet

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Telegram Updated: 2025-06-30 04:20:01

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