Php 无法启用pdo_sqlite

我已经运行了sudo apt get install php5 sqlite，phpinfo显示安装了sqlite3，但是当我尝试连接到它时，我得到：

PDOException::could not find driver

当我在apache2 php.ini文件中启用它时

extension = pdo_sqlite.so 
extension = sqlite.so 

这不会改变任何事情。此外，当我将相同的行添加到cli php.ini中时，我得到

PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php5/20121212/pdo_sqlite.so' - /usr/lib/php5/20121212/pdo_sqlite.so: undefined symbol: php_pdo_unregister_driver in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php5/20121212/sqlite.so' - /usr/lib/php5/20121212/sqlite.so: cannot open shared object file: No such file or directory in Unknown on line 0

我已经没有主意了。感谢您的帮助。

解决方案：

首先加载PHP pdo模块，纠正apt dist升级后中断的CLI符号链接：

注意：通过Web浏览器，phpinfo返回所有模块均已加载且没有错误，因此我比较/etc/php5/cli与/etc/php5/apache2，以了解区别

之后：

之前：

在我的Ubuntu 14.04 LTS 64位上出现以下警告：

/etc/php5/cli/conf.d# php -v
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php5/20121212/pdo_pgsql.so' - /usr/lib/php5/20121212/pdo_pgsql.so: undefined symbol: pdo_parse_params in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php5/20121212/pdo_sqlite.so' - /usr/lib/php5/20121212/pdo_sqlite.so: undefined symbol: php_pdo_unregister_driver in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php5/20121212/pdo_odbc.so' - /usr/lib/php5/20121212/pdo_odbc.so: undefined symbol: pdo_parse_params in Unknown on line 0

---

你重启apache了吗？是的，我重启了，但没有任何改变。你有库吗？哪些库？我已经安装了sqlite3。

php -v
PHP 5.5.9-1ubuntu4.22 (cli) (built: Aug  4 2017 19:40:28)
Copyright (c) 1997-2014 The PHP Group
Zend Engine v2.5.0, Copyright (c) 1998-2014 Zend Technologies

/etc/php5/cli/conf.d# php -v
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php5/20121212/pdo_pgsql.so' - /usr/lib/php5/20121212/pdo_pgsql.so: undefined symbol: pdo_parse_params in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php5/20121212/pdo_sqlite.so' - /usr/lib/php5/20121212/pdo_sqlite.so: undefined symbol: php_pdo_unregister_driver in Unknown on line 0
PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php5/20121212/pdo_odbc.so' - /usr/lib/php5/20121212/pdo_odbc.so: undefined symbol: pdo_parse_params in Unknown on line 0