PHP Multiple Reference error

Before this problem, PHP upgrade to 5.4 This problem occurs

Code in config.php

Code in connect.php

  
   connect_error){    die('Connect Error:'.$mysqli->connect_error);}$mysqli->set_charset('utf8');?>

Code in the index.php

Then the question came, if I introduced in the single index.php connect.php , php error, prompted me host username password datebase these constants are not defined
But if this

Is normal, ask what this is going on, how to solve

Reply content:

Before this problem, PHP upgrade to 5.4 This problem occurs

Code in config.php

Code in connect.php

  
   connect_error){    die('Connect Error:'.$mysqli->connect_error);}$mysqli->set_charset('utf8');?>

Code in the index.php

Then the question came, if I introduced in the single index.php connect.php , php error, prompted me host username password datebase these constants are not defined
But if this

Is normal, ask what this is going on, how to solve

Look at this should be helpful to you, on the way home can't code word
Http://m.111cn.net/art-42982.htm

Try changing the defined constant name to uppercase.

New Mysqli (host,username,password,database);
New Mysqli ($host, $username, $password, $database);
Do you understand me?

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