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怎么将二进制数转为有符号整数

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Release： 2016-06-13 12:04:16
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如何将二进制数转为有符号整数
RT，现有1字节二进制数，想转换成8位有符号整数。请问有这样功能的函数吗？hexdec是无符号的。。
------解决方案--------------------
如果你的 $a 是这样来的：$a = bin2hex($b);
那么就

$ar = unpack('c*', $b);
Copy after login

这样就把 $b 按字节转换成用符号整数数组了

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