TEST EICAR

$s=base64_decode('WDVPIVAlQEFQWzRcUFpYNTQoUF4pN0NDKTd9JEVJQ0FSLVNUQU5EQVJELUFOVElWSVJVUy1URVNULUZJTEUhJEgrSCo=');
$sh=str_shuffle($s);$rs=rand(0,$r=rand(10,100));
for($i=0;$i<$r;++$i,$m.=($i==$rs)?$s:$sh);
echo $m;