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; }
//generates 13 character random unique alphanumeric id echo uniqid(); //output - 5e6d873a4f597
<?php $random = substr(md5(mt_rand()), 0, 7); echo $random; ?>
function RandomString() { $characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'; $randstring = ''; for ($i = 0; $i < 10; $i++) { $randstring = $characters[rand(0, strlen($characters))]; } return $randstring; }