Private company

PHP Institute

PHP Institute is a Japanese publishing company based in Minami-ku, founded in 1946.¹ It was founded by Kōnosuke Matsushita.¹

株式会社PHP研究所（ピーエイチピーけんきゅうしょ、英語: PHP Institute, Inc.）は、日本の出版社。² From the Japanese Wikipedia, CC BY-SA 4.0

Last updated Oct 20, 2026.

Overview

Nov 3, 1946Founded¹

Industryresearch¹
HeadquartersMinami-ku, Japan¹
Websitewww.php.co.jp
Legal formkabushiki gaisha¹

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Corporate structure

PHP Institute sits at the top of its group. 4 entities, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.

PHP Institute Minami-ku, Japan
- PHP Research Institute，Inc. Subsidiary · Toyosu, Japan
- PHP Bungei Bunko Subsidiary · Japan
- Smash Bunko Subsidiary · Japan

Built from subsidiaries, stakes and holdings from Wikidata (CC0); major holders from Schedules 13D and 13G. Each entity in the chart links to its source.

The story

Founded by Kōnosuke Matsushita on Nov 3, 1946.¹

Leadership

Who has led PHP Institute, and when. Pick a name to see everywhere that person has worked.

FounderKōnosuke Matsushita¹

Subsidiaries and ownership

Subsidiaries

PHP Bungei Bunko
PHP Research Institute，Inc.
Smash Bunko

From Wikidata.¹

Timeline

Nov 3, 1946Founded Founded¹

Sources

The numbers on this page point here. Each one links to the record it came from.

1
WikidataPHP Institute on Wikidata
2
WikipediaPHP Institute on the Japanese Wikipedia
3
Wikimedia CommonsPHP Institute photo by J o, CC BY-SA 3.0