Warning: Undefined variable $argv in C:\xampp2\htdocs\streaming\instagram\update.php on line 12

Fatal error: Uncaught TypeError: in_array(): Argument #2 ($haystack) must be of type array, null given in C:\xampp2\htdocs\streaming\instagram\update.php:12 Stack trace: #0 C:\xampp2\htdocs\streaming\instagram\update.php(12): in_array('-b', NULL) #1 {main} thrown in C:\xampp2\htdocs\streaming\instagram\update.php on line 12