test.phpfile$con=mysqli_connect("127.0.0.1","root","password","test");//检测连接if(mysqli_connect_errno($con)){echo"数据库连接失败：".mysqli_connect_error();}echomysqli_get_server_info($con);mysqli_close($con);执行test.php文件报错：databaseconnectionfailed:Can'tconnecttoMySQLserveron'127.0.0.1'(13)但是把127.0.0.1改成localhost数据库就可以连接成功了。Liunx执行/usr/sbin/setenforce0，立即关闭SELINUX使其工作。..老妈卖SELINUX的锅，永久关闭vi/etc/selinux/configSELINUX=enforcingtoSELINUX=disabled
