关于PHP中extension加载顺序问题的解决方法

PHP Warning: PHP Startup: Unable to load dynamic library 'pdo_sqlsrv.so' (tried: 
/usr/lib64/php/modules/pdo_sqlsrv.so (/usr/lib64/php/modules/pdo_sqlsrv.so: cannot open shared object file: 
No such file or directory), /usr/lib64/php/modules/pdo_sqlsrv.so.so (/usr/lib64/php/modules/pdo_sqlsrv.so.so: 
undefined symbol: php_pdo_register_driver)) in Unknown on line 0

extension=pdo.so
extension=pdo_sqlsrv.so  //放到pdo后面

PHP Warning: PHP Startup: Unable to load dynamic library 'swoole.so' (tried: 
/usr/lib64/php/modules/swoole.so (/usr/lib64/php/modules/swoole.so: cannot open shared object file: 
No such file or directory), /usr/lib64/php/modules/swoole.so.so (/usr/lib64/php/modules/swoole.so.so: 
undefined symbol: php_sockets_le_socket)) in Unknown on line 0

extension=sockets.so
extension=swoole.so  //放到pdo后面