May 1, 2026 · Industry Insights

Why PHP 9.0 Is Switching to the 3‑Clause BSD License

The php.internals vote on April 4 approved moving PHP 9.0 to the permissive 3‑clause BSD license, replacing the dual PHP v3.01 and Zend Engine licenses, and the article explains the historical reasons, legal benefits, comparisons with other BSD variants, PostgreSQL’s approach, and broader open‑source licensing trends.

BSD licenseOSIPHP

0 likes · 7 min read

Why PHP 9.0 Is Switching to the 3‑Clause BSD License

Baidu Tech Salon

Jun 26, 2014 · Fundamentals

Linux vs BSD: Understanding the Differences Between Two Open-Source Unix-Like Operating Systems

Linux provides only a kernel that must be combined with a myriad of distributions, uses the GPL, and offers broader hardware support for desktops, while BSD delivers a complete, single‑project operating system under a permissive BSD license, emphasizing stability, security, and vendor freedom, especially for servers.

BSDBSD licenseFreeBSD

0 likes · 8 min read

Linux vs BSD: Understanding the Differences Between Two Open-Source Unix-Like Operating Systems

Why PHP 9.0 Is Switching to the 3‑Clause BSD License

Linux vs BSD: Understanding the Differences Between Two Open-Source Unix-Like Operating Systems

Why PHP 9.0 Is Switching to the 3‑Clause BSD License