<?php

function x($s){$r='preg_replace';$s=$r('/ +/',' ',$s);$s=$r(array('/ \^COMMA/','/ \^COLON/','/ \^SEMICOLON/','/ \^PERIOD/','/ \^BANG/','/\^DASH/','/ \^HYPHEN /','/ \^EMDASH /','/\^OPENQUOTE /','/ \^CLOSEQUOTE/'),array(',',':',';','.','!','-','-','--','"',',"'),$s);$s=$r('/(^\W*\w|([\.!]| ")\W+\w)/e','strtoupper("$0")',$s);$s=$r('/([,\.!]),/','\1',$s);$s=$r('/(\w)( "\w)/e','"$1,".strtoupper("$2")',$s);echo$s;}

echo x("hello ^COMMA   world ^BANG");
echo ("\n");
echo x("once upon a time ^COMMA there was a horse ^PERIOD that horse cost me $50 ^PERIOD ^OPENQUOTE eat your stupid oats ^COMMA already ^BANG ^CLOSEQUOTE I told the horse ^PERIOD the horse neighed back ^OPENQUOTE no ^CLOSEQUOTE and died ^PERIOD THE END");
echo ("\n");
x("begin a ^PERIOD b ^COMMA c ^COLON d ^SEMICOLON e ^BANG f ^HYPHEN g ^DASH h ^EMDASH i ^OPENQUOTE j ^PERIOD ^OPENQUOTE k ^SEMICOLON ^OPENQUOTE l ^CLOSEQUOTE m ^BANG ^CLOSEQUOTE n ^PERIOD 0x6C6F6C end");
echo ("\n");