<?=preg_replace(explode(c,'/wa/c/e.*u/c/su$/mc/ama/c/m.* /c/.* /c/ko.*e/c/tou/c/b.*/c/unara/c/ou$/mc/ma$/m'),array(wan,"$0kanku",usu,amausu,tanoshii,yukaina,' nakamaga popopopo-n',tousagi,"$0i",naraion,ounagi,manbou),fread(STDIN,2048));
Note that non-ascii characters in the above source code will be escaped (such as \x9f).