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What is BCMath extension?
Most programming languages follow the IEEE 754 standard for floating-point data formats, which leads to the problem of precision loss during floating-point operations. PHP provides the BCMath library to support more precise calculations.
1. Find the PHP source code package bcmatch directory
find / -name bcmath
What I actually use is /mydata/php-7.3.5/ext/bcmath
cd /mydata/php-7.3.5/ext/bcmath
2. Execute the phpize
phpize command in the bin directory of the PHP installation directory. If the PHP bin directory has been added to the system environment variable, execute phpize directly in the bcmath directory
phpize
Otherwise, write the path of the full phpize command
/usr/local/server/php7.3/bin/phpize
3. Precompile
./configure --with-php-config=/usr/local/server/php7.3/bin/php-config
php-config is also in the PHP bin directory If you can't find it, you can use the find command to find it
4. Compile && Install
sudo make && make install
5. Add PHP configuration
You can check the configuration in the phpinfo() function File location
Add the extension in php.ini
vi /usr/local/server/php7.3/etc/php.ini extension=bcmath.so
6. Restart the service
Execute the restart service command, this restart command It depends on your specific environment, not much to say here
service httpd restart
or
httpd -k restart
Check phpinfo() or execute the command php -m to see if the extension is installed successfully
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