viest/php-ext-xlswriter

Health v2 · maintenance only

Adoption not part of the score

2372 stars · 237 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

A high-performance PHP C extension for reading and writing Excel 2007+ XLSX files, with a fixed-memory mode that keeps memory usage constant regardless of row count. It also supports CSV merging and cursor-based reading of large spreadsheets.

Use cases

• export millions of rows to xlsx from php with low memory
• read large excel files row by row in php
• generate excel reports faster than phpspreadsheet
• merge multiple csv files into one spreadsheet
• stream xlsx export without exhausting php memory

When to choose

• you need to export or import very large XLSX files in PHP with constant memory usage
• pure-PHP libraries like PhpSpreadsheet are too slow or memory-hungry
• you want a fast C-based extension installable via PECL

When to avoid

• you need rich formatting, charts, or complex Excel features beyond basic writing/reading
• you cannot install PHP C extensions on your hosting environment
• you need to work with legacy .xls files rather than XLSX

Facets

library · maturity stable

file-system developer-tools files spreadsheets developer-tools performance windows php xlsx excel php-extension spreadsheet low-memory csv pecl linux macos

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