CentOS6.5 php -v 报错无法加载动态库openssl，因为找不到openssl.so

php7.2.8

安装grav (https://www.getgrav.org/) 时，指南提示在php.ini去掉注释extension=openssl （其实最后发现可能其实不需要去掉注释）

问题：
Warning: PHP Startup: Unable to load dynamic library ‘openssl’ (tried: /usr/local/lib/php/extensions/no-debug-non-zts-20170718/openssl (/usr/local/lib/php/extensions/no-debug-non-zts-20170718/openssl: cannot open shared object file: No such file or directory), /usr/local/lib/php/extensions/no-debug-non-zts-20170718/openssl.so (/usr/local/lib/php/extensions/no-debug-non-zts-20170718/openssl.so: cannot open shared object file: No such file or directory)) in Unknown on line 0

排查：
php编译时配置带了–with-openssl
phpinfo显示有openssl
php -m 也显示有openssl
openssl -v 也显示版本号

解决方法：

不重新编译PHP为php增加openssl.so模块
http://blog.51cto.com/weijixian1015/836517

新问题：
php -v 报错openssl不是valid library
结果时编译时需要先make clean

https://stackoverflow.com/questions/33347108/php-warning-php-startup-invalid-library-maybe-not-a-php-library-in-unknown-o

新问题：
PHP Warning: Module already loaded in Unknown on line 0
解决：
在php.ini注释掉
extension=openssl

https://stackoverflow.com/questions/32764981/php-warning-module-already-loaded-in-unknown-on-line-0

https://blog.csdn.net/solio5/article/details/55797050

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其实zip.so也找不到，同理操作，只是configure时不需要—with-zip，因为不认
https://xiaozhou.net/turn_on_zip_extension_of_php-2011-04-10.html