Have you ever encountered php extension loading order issues?

php extension loading order problem

Some php extensions are loaded in a sequential order. If you make a mistake, the extension will not be loaded.

1. pdo_sqlsrv is a sqlserver extension. If loaded before the pdo extension, the following error will be reported.

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

Solution:

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

2. The swoole extension depends on the sockets extension. The following error will be reported before loading the sockets extension

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

Solution:

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

After loading, restart, php-fpm will be fine

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