在Mac系统中，通常不使用某些.dll文件.您可以查看文件夹/usr/local/Cellar/php70/7.0.27_19/lib/php/extensions/no-debug-non-zts-20151012/来查看是否还有其他与GMP相关的文件吗?可能您应该通过

Using some .dll file is not usual for a Mac system. Can you have a look at the folder /usr/local/Cellar/php70/7.0.27_19/lib/php/extensions/no-debug-non-zts-20151012/ to see if there is any other GMP related file? Probably, you should add the extension through

extension=gmp.so