encode demo:

source code:

Key Feature Codes:

$_____=' b2JfZW5kX2NsZWFu';
$______________='cmV0dXJuIGV2YWwoJF8pOw==';
$__________________='X19sYW1iZGE=';
$______=' Z3p1bmNvbXByZXNz';
$___=' b2Jfc3RhcnQ=';
$____='b2JfZ2V0X2NvbnRlbnRz';
$__= 'base64_decode' ;
$______=$__($______);
if(!function_exists('__lambda')){
function __lambda($sArgs,$sCode)
{
return eval("return function($sArgs){{$sCode}};");
}
}