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PHP函数ip2long转换IP时数值太大而产生负数

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Release： 2016-06-13 10:17:39
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// 使用 sprintf 返回无符号十进制数
$long = sprintf("%u",ip2long($ip));
// 先转换为二进制然后在转换为十进制
$long = bindec(decbin(ip2long($ip)));
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