PHP 5.1
end of lifeEOL 2006-08-24
PHP 5.1 reached end of life on 2006-08-24 and is no longer supported. First release: 2005-11-24. Latest stable release: 5.1.6. Lifecycle periods below are derived from official vendor sources with provenance.
Latest stable 5.1.6 (2006-08-24)
Lifecycle & support periods
| Phase | From | Until | Provider | Source |
|---|---|---|---|---|
| standard support | 2005-11-24 | 2007-11-24 | The PHP Group | PHP Supported Branches |
| end of life | 2006-08-24 | — | The PHP Group | PHP Supported Branches |
| security support | 2007-11-24 | 2006-08-24 | The PHP Group | PHP Supported Branches |
Provenance
Every lifecycle fact is traceable to its authoritative source.
- PHP Supported Branchesfirst party · highhttps://www.php.net/releases/branches.php
Retrieved 2026-08-28 · PHP 5.1 end-of-life
- PHP Supported Branchesfirst party · highhttps://www.php.net/releases/branches.php
Retrieved 2026-08-28 · PHP 5.1 security support only
- PHP Supported Branchesfirst party · highhttps://www.php.net/releases/branches.php
Retrieved 2026-08-28 · PHP 5.1 active support
Recent releases
- 5.1.62006-08-24
- 5.1.52006-08-17
- 5.1.42006-05-04
- 5.1.32006-05-02
- 5.1.22006-01-12
- 5.1.12005-11-28
- 5.1.02005-11-24