PHP7.x安装mysql扩展

• mysql扩展下载
  http://git.php.net/?p=pecl/database/mysql.git;a=summary

• 使用phpize工具初始化
  sudo /usr/local/bin/phpize

  报错提示

  Cannot find autoconf. Please check your autoconf installation and the
$PHP_AUTOCONF environment variable. Then, rerun this script.

  解决措施：
  sudo yum install -y m4 autoconf

• 编译mysql扩展
  sudo ./configure --with-php-config=/usr/local/bin/php-config --with-mysql=mysqlnd

  sudo make && sudo make install