php - Variable showing as undefined straight after it's been initialized -


maybe i'm tired programming, tell me why prints user doesn't exist?

// create user class hold session data $user = new stdclass();  function init () {     if (!isset($user)) echo 'user doesn\'t exist'; }  init();

you have issue variable scope, variable cannot accessed function init, try using global key word // create user class hold session data $user = new stdclass();

function init () {     global $user;     if (!isset($user)) echo 'user doesn\'t exist'; }  init();

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