| 101. | .pgr | PGP Groups (Pretty Good Privacy) |
| 102. | .pgs | Manual page (man4dos) |
| 103. | .ph | Perl header file ◊ Optimized .goh include file (Geoworks) ◊ Phrase-table (Microsoft C/C++) ◊ Temporary file generated by Microsoft Help Compiler |
| 104. | .phd | PolyHedra Database |
| 105. | .phm | Phone book (DN - Lync) |
| 106. | .phn | Phone list (UltraFax - QmodemPro) |
| 107. | .pho | Phone database (Metz Phone for Windows) |
| 108. | .php | HTML page that includes a PHP script |
| 109. | .php3 | HTML page that includes a PHP script |
| 110. | .phr | Phrases (LocoScript) |
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