php random string
function rand_str() { $characters = '0123456789-=+{}[]:;@#~.?/>,<|\!"£$%^&*()abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'; $randomstr = ''; for ($i = 0; $i < random_int(50, 100); $i++) { $randomstr .= $characters[rand(0, strlen($characters) - 1)]; } return $randomstr; }