php - Undefined variable of print_r -

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• php: “notice: undefined variable”, “notice: undefined index”, , “notice: undefined offset” 23 answers

i got code in php: purpose of $errors display error when execute them in php. sadly says $errors not defined variable.. how come? me please?

if (empty($username) === true || empty($password) === true) {     $errors[] = 'you need enter username , password'; }  else {     //here }  print_r ($errors); 

}

and got error..

notice: undefined variable: error in c:\xampp\htdocs\shaven\login.php on line 28 

may know how solved this?

if $username and $password isn't empty, code inside if block won't executed , $errors won't defined. in case, you'll trying print_r() undefined variable.

initialize $errors empty array before doing comparison:

$errors = array(); 

and before doing print_r(), make sure array isn't empty:

if (!empty($errors)) {     print_r($errors); }