ip2long转换IP时数值太大产生负数的解决方法

ip2long转换IP时数值太大产生负数的解决方法
【造成原因】:Because PHP's integer type is signed, and many IP addresses will result in negative integers. 【解决办法】:其官方手册中提到,可以“you need to use the "%u" formatter of sprintf() or printf() to get the string r...

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