PHP输出

样例：

$a = true;
$b = false;
$c = 086;
$d = 0x86;
echo "$a hase value: ".$a; echo "<br/>";
echo "$b hase value: ".$b; echo "<br/>";
echo "$c hase value: ".$c; echo "<br/>";
echo "$d hase value: ".$d;

输出：

1 hase value: 1
hase value: 
0 hase value: 0
134 hase value: 134