无法连接到 mysqli php 有什么问题

Question

This is my code:

<?php
$connection = mysqli_connect('localhost','root','','cms'); 

if($connection){
  echo "Error : unable to connect to mysqli.".PHP_EOL;
  echo "Debugging errno".mysqli_connect_errno().PHP_EOL;
  echo "Debugging error".mysqli_connect_error().PHP_EOL;
  exit;
}
?>

And I'm getting the following error:

Error : unable to connect to mysqli. Debugging errno0 Debugging error

Answer 1

Brother your connection is successful , you just need to use -

if(!$connection) instead of if($connection)