[php-src] Issue #9996: Undefined symbol: pdo_parse_params when loading dynamic library 'pdo_mysql'

Issue: https://github.com/php/php-src/issues/9996 Author: myyangang ### Description I installed PHP-8.1.2 and php-mysql extension on Ubuntu 22.04. After enabling it manually in php.ini, PHP keeps warning that there's a undefined symbol: pdo_parse_params and refuses to load it. ``` root@linux /v/w/html# php --version (base) PHP Warning: PHP Startup: Unable to load dynamic library 'pdo_mysql' (tried: /usr/lib/php/20210902/pdo_mysql (/usr/lib/php/20210902/pdo_mysql: undefined symbol: pdo_parse_params), /usr/lib/php/20210902/pdo_mysql.so (/usr/lib/php/20210902/pdo_mysql.so: undefined symbol: pdo_parse_params)) in Unknown on line 0 PHP 8.1.2-1ubuntu2.8 (cli) (built: Nov 2 2022 13:35:25) (NTS) Copyright (c) The PHP Group Zend Engine v4.1.2, Copyright (c) Zend Technologies with Zend OPcache v8.1.2-1ubuntu2.8, Copyright (c), by Zend Technologies ``` And I'm sure that it has been installed. ``` root@linux /v/w/html [100]# apt install php-mysql (base) Reading package lists... Done Building dependency tree... Done Reading state information... Done php-mysql is already the newest version (2:8.1+92ubuntu1). 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. root@linux /v/w/html# php -m [PHP Modules] ...... PDO pdo_mysql ...... root@linux /v/w/html# tree /usr/lib/php/ /usr/lib/php/ |-- 20210902 | |-- ...... | |-- pdo.so | |-- pdo_mysql.so | |-- ...... ``` But readelf told me that pdo_parse_params does exist. ``` root@linux /u/l/p/20210902# readelf -a pdo_mysql.so | grep "pdo_parse" 000000008de8 000100000007 R_X86_64_JUMP_SLO 0000000000000000 pdo_parse_params + 0 000000008f98 003e00000007 R_X86_64_JUMP_SLO 0000000000000000 php_pdo_parse_dat[...] + 0 1: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND pdo_parse_params 62: 0000000000000000 0 NOTYPE GLOBAL DEFAULT UND php_pdo_parse_da[...] ``` I'm so confusing about this problem. Why PHP can't identify this pdo_parse_params? ### PHP Version PHP 8.1.2 ### Operating System Ubuntu 22.04