Custom redirect after login

I am trying to redirect the user after it logs in.

I run set_redirect() at the top of my header.php

/*
* ===============================
* SET SESSION REDIRECT
* ===============================
*/

function set_redirect(){
if(isset($_GET[‘redirect’]) ){
$redirect_link = htmlspecialchars($_GET[‘redirect’]);
session_start();
$_SESSION[“redirect”] = $redirect_link;
}
}

And this is my hook in function.php

/*
* ===============================
* AFTER LOGIN REDIRECTION
* ===============================
*/

add_action(‘swpm_after_login’, ‘swpm_do_after_login_redirection’);

function swpm_do_after_login_redirection()
{
if(strpos($_SESSION[‘redirect’],’supplier’) > 0 || strpos($_SESSION[‘redirect’],’airport’) > 0 || strpos($_SESSION[‘redirect’],’operator’) > 0 || strpos($_SESSION[‘redirect’],’job’) > 0 ){
//session_start();
wp_redirect($_SESSION[‘redirect’]);
exit;
}else{
$member_profile_url = get_permalink(124);
wp_redirect($member_profile_url);
exit;
}

}

What am I doing wrong?