The name "Personal Home Page/Forms Interpreter" was later shortened to PHP/FI and eventually renamed to represent "PHP: Hypertext Preprocessor" (the name is said to be recursive because the full name also includes the acronym "PHP" (an odd geeky joke that is common in technology circles when people have trouble naming things. GNU is another recursive name that represents "GNU's Not Unix").
Exception encountered, of type "Error"
[0a4317d5] /index.php/Special:MobileDiff/941 Error from line 434 of /home/techotopia/includes/diff/DairikiDiff.php: Call to undefined function each()
Backtrace:
#0 /home/techotopia/includes/diff/DairikiDiff.php(544): DiffEngine->diag()
#1 /home/techotopia/includes/diff/DairikiDiff.php(344): DiffEngine->compareSeq()
#2 /home/techotopia/includes/diff/DairikiDiff.php(227): DiffEngine->diffLocal()
#3 /home/techotopia/includes/diff/DairikiDiff.php(721): DiffEngine->diff()
#4 /home/techotopia/includes/diff/DairikiDiff.php(859): Diff->__construct()
#5 /home/techotopia/includes/diff/DairikiDiff.php(980): MappedDiff->__construct()
#6 /home/techotopia/extensions/MobileFrontend/includes/diff/InlineDiffFormatter.php(99): WordLevelDiff->__construct()
#7 /home/techotopia/includes/diff/DiffFormatter.php(140): InlineDiffFormatter->changed()
#8 /home/techotopia/includes/diff/DiffFormatter.php(111): DiffFormatter->block()
#9 /home/techotopia/extensions/MobileFrontend/includes/diff/InlineDifferenceEngine.php(117): DiffFormatter->format()
#10 /home/techotopia/includes/diff/DifferenceEngine.php(797): InlineDifferenceEngine->generateTextDiffBody()
#11 /home/techotopia/includes/diff/DifferenceEngine.php(728): DifferenceEngine->generateContentDiffBody()
#12 /home/techotopia/extensions/MobileFrontend/includes/specials/SpecialMobileDiff.php(241): DifferenceEngine->getDiffBody()
#13 /home/techotopia/extensions/MobileFrontend/includes/specials/SpecialMobileDiff.php(135): SpecialMobileDiff->showDiff()
#14 /home/techotopia/extensions/MobileFrontend/includes/specials/MobileSpecialPage.php(53): SpecialMobileDiff->executeWhenAvailable()
#15 /home/techotopia/includes/specialpage/SpecialPage.php(384): MobileSpecialPage->execute()
#16 /home/techotopia/includes/specialpage/SpecialPageFactory.php(553): SpecialPage->run()
#17 /home/techotopia/includes/MediaWiki.php(281): SpecialPageFactory::executePath()
#18 /home/techotopia/includes/MediaWiki.php(714): MediaWiki->performRequest()
#19 /home/techotopia/includes/MediaWiki.php(508): MediaWiki->main()
#20 /home/techotopia/index.php(41): MediaWiki->run()
#21 {main}