Return a variable from a php function

Question

No doubt there is a very quick and easy solution for this but I can’t seem to get my head around it. How would I go about returning the variable $errMsg from the function below? So I can display it on the page where the function is being called.

function login(){

    global $wpdb;

    if( isset($_POST['login_btn'] )){


        if (empty($_POST['login_username'] || empty($_POST['login_password']))) {

            $errMsg = 'Invalid Username or Password';
            return $errMsg; 

        }else {

            $login_username = $_POST['login_username'];
            $login_password = $_POST['login_password'];

            $u = $login_username;
            $p = $login_password;


            $query = $wpdb -> prepare("SELECT * FROM 'wp_members' WHERE     'username' = %u AND 'password' = %p", $u, $p );

            // If there is a matching username and password then redirected to login
            if ($query == true) {

                $_SESSION['login_username'] = $login_username;          
                header('Location: /flourishWP/wp-content/themes/blankslate/includes/admin.php');    
            }
        }
    }
}

Did you try echo $errMsg ?

Prabin Parajuli
– Prabin Parajuli

2015-10-08 09:48:18 +00:00
Commented Oct 8, 2015 at 9:48 — Prabin Parajuli
– Prabin Parajuli, Commented Oct 8, 2015 at 9:48

Zura Tsilosani · Accepted Answer · 2015-10-08 09:49:51Z

3

$someVar = login(); now inside $someVar you have returned values of your function

answered Oct 8, 2015 at 9:49

Zura Tsilosani

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user5421628 · Accepted Answer · 2015-10-08 10:12:57Z

1

Try using echo

    if (empty($_POST['login_username'] || empty($_POST['login_password']))) {

        $errMsg = 'Invalid Username or Password';
        echo $errMsg; 

    }

answered Oct 8, 2015 at 10:12

user5421628

Comments

Sebastian Schneider · Accepted Answer · 2015-10-08 09:49:18Z

0

Very simple:

$errmsg = login();

if($errmsg != null){
    echo $errmsg;
}

You call the function and if there is an error message you display it.

answered Oct 8, 2015 at 9:49

Sebastian Schneider

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1 Comment

Sebastian Schneider Over a year ago

But call it outside the login() function ;)

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