php设置环境变量 实例: $g_config['root'] =dirname(realpath(__FILE__)); set_include_path($g_config['root'].'/pear'. PATH_SEPARATOR . $g_config['root'] . '/cas' . PATH_SEPARATOR .get_include_path());登录后复制 批注:1,realpath(__FILE__)2,get_include_path()3,set_include_path()