Another ShortestWikiContest contender, heavily influenced by SigWik. Written to prove that also PHP can be as short and unreadable as Perl.
Features
Quick instructions
Code
$p=$_SERVER[PHP_SELF];$e=htmlentities($_GET[t]);if($e)`echo "$e">.$p`
&header("Location:$p");$n=`cat .$p`;echo preg_replace('~htt\S+|([A-Z]\w+){2,}~'
,'$0',`ls -t|head`."
$p
$n"),"
Command to start the PHP built-in webserver
$ php -d error_reporting=0 -d short_open_tag=On -S localhost:8000 wiphiki.php
License
WiPhiki is licensed under the terms and conditions of the MIT License - http://opensource.org/licenses/mit-license
The author of the original WiPhiki code is Smasty (http://smasty.net).