CODEWITHSUNDEEP
phpfunctionglobal-variablesscope
Skylar White
Skylar White

Reputation: 31

PHP Variable Scope issue?

I'm writing a function and it uses the $PDO variable in another file. I included the file at the beginning, but it's saying undeclared variable. I'm assuming it's because it's out of scope.

  require './db/db.php';
  session_start();

    function createUser($username) {

    }

What can I do to be able to reference the variable $PDO which is my PDO instance to use the database in my functions?

Upvotes: 0

Views: 77

Answers (3)

Imran Omer
Imran Omer

Reputation: 701

Pass $PDO as an argument;

function function_name($PDO)
{
    // Your function code
}

Upvotes: 1

federicot
federicot

Reputation: 12341

Assuming you didn't declare the "PDO instance" inside any external function or class, you should just pass it to the function as a parameter. So (if you're talking about your createUser function)

createUser($PDO, $username) { }

And you'd call it like this: createUser($PDO, 'Foo');.

Upvotes: 1

Barmar
Barmar

Reputation: 782785

Either pass the variable to the function as an argument, or put

global $PDO;

in the function.

Upvotes: 0

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