I have tried to use gmp_sign in my file to find the sign of the value, but i getting an error like call to undefined function with fatal error.
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dongzha5934 2017-10-09 13:35关注Is it Ubuntu/Linux? Seems like GMP is not installed on the system. Follow these steps:
Installed GMP with
apt-get install php5-gmpAdded
extension=php_gmp.soto php.ini
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