.php
2 claimants
2 primary
0 secondary
shared primary (2)
SWH popularity
Distinct files in the full Software Heritage archive (2026-06-04 export), dated by first appearance, following Desmazières, Di Cosmo, Lorentz (MSR 2025). Case-aggregated. citation.
545.3M
total files
203.4M
first seen 2021–2025 (37.3%)
2019
median year (half its files since)
Case variants in archive: .php (545.3M), .PHP (24.9K), .Php (1.7K), .PhP (66), .PHp (49), .pHp (47), .phP (39), .pHP (30) — aggregated above.
Attribution status
This extension is attributed to Hack; PHP as primary by 4 authoritative claims.
Claimants (5)
Languages that list
.php among their extensions. Strength reflects whether the upstream source treated it as their primary extension.| Language | Source | Strength |
|---|---|---|
| Hack | pygments | primary |
| PHP | linguist | primary |
| PHP | pygments | primary |
| PHP | wikidata | primary |
| Hack | linguist | secondary |
Wikidata says… (7)
File formats, image formats, audio codecs and other non-PL
entities that claim
.php on Wikidata
(property P1195) or in the Wikipedia infobox.
Source: data/derived/external_extension_index.csv.
Click Use as new PL on any row to open the
Add-PL form pre-filled with that entry's name, Wikipedia/Wikidata
URL, and this extension — one submission creates the PL + claim.
| Format | Class (Wikidata P31) | Suggested label | MIME | Notes | Action |
|---|---|---|---|---|---|
| American Greetings Project 10-23 Q89029185 file format | file format | — | — | — | Use as new PL ↗ |
| Digital Image Publishing File Q119157250 file format | file format | — | — | — | Use as new PL ↗ |
| Easy Prints file Q111648750 file format | file format | — | — | — | Use as new PL ↗ |
Disambiguation rules (2)
Linguist heuristics that decide, by content, which language a
.php file actually is.| Rule | Predicts | Kind | Predicates (truncated) | Measured on SWH |
|---|---|---|---|---|
h/linguist/.php/0 | Hack | predicates | [{"kind": "any", "regexes": ["<\\?hh"]}] | |
h/linguist/.php/1 | PHP | predicates | [{"kind": "any", "regexes": ["<\\?[^h]"]}] |
SWH-mined examples (0)
No archived examples for .php in our local mirror yet.