thinkphp Class 'PDO' not found 錯誤，原因mysql5.7.26缺少pdo驅動，需要安裝php的pdo和pdo_mysql擴展
本文以centOS為例
1、進入PHP源碼包ext/pdo目錄
cd ext/pdo
2.執行/usr/local/php/bin/phpize[假設PHP的安裝目錄為/usr/local/php]
/usr/local/php/bin/phpize --with-php-config=/usr/local/php/bin/php-config
3.配置擴展pdo
./configure --with-php-config=/usr/local/php/bin/php-config --enable-pdo=shared
4.編譯安裝pdo
make && make install
成功則出現
Installing shared extensions: /usr/local/php/lib/php/extensions/no-debug-non-zts-20060613/
Installing header files: /usr/local/php/include/php/
Installing PDO headers: /usr/local/php/include/php/ext/pdo/
說明在/usr/local/php//lib/php/extensions/no-debug-non-zts-20060613/目錄下生成了pdo.so文件
6.在php配置文件中加上
extension=”/usr/local/php//lib/php/extensions/no-debug-non-zts-20060613/pdo.so”
2、進入PHP源碼包ext/pdo_mysql目錄
7.在PHP源碼包中進入pdo_mysql
cd ext/pdo_mysql
8.執行/usr/local/php/bin/phpize --with-php-config=/usr/local/php/bin/php-config
9.配置pdo_mysql[假設Mysql的安裝目錄為/usr/local/mysql]
./configure --with-php-config=/usr/local/php/bin/php-config --with-pdo-mysql=/usr/local/mysql
10.編譯pdo_mysql 安裝pdo_mysql
make && make install
成功則出現
Installing shared extensions: /usr/local/php/lib/php/extensions/no-debug-non-zts-20060613/
說明的/usr/local/php//lib/php/extensions/no-debug-non-zts-20060613/目錄下生成了pdo_mysql.so文件
12.在php配置文件中加上
extension=”/usr/local/php//lib/php/extensions/no-debug-non-zts-20060613/pdo_mysql.so”
重啟php和（nginx或Apache）即可！