note 86281 modified in function.rand by danbrown

A function to generate numbers of any length which contain no identical digits side-by-side. i.e. 112233 <?php function randomNumber($number_of_digits=null){ $number_of_digits = ( $number_of_digits == null ) ? 1 : $number_of_digits; for($x=0;$x<$number_of_digits;$x++){ while(substr($new_number,strlen($new_number)-1,strlen($new_number)) == $r) $r = rand(0,9); $num .= $r; } return $new_number; } echo randomNumber(9); // Output: 875438104 echo randomNumber(); // Output: 8 ?> --was-- A function to generate numbers of any length which contain no identical digits side-by-side. i.e. 112233 <?php function randomNumber($number_of_digits=null){ for($x=0;$x<$number_of_digits;$x++){ while(substr($num,strlen($num)-1,strlen($num)) == $r) $r = rand(0,9); $new_number .= $r; } return $new_number; } ?> echo randomNumber(9); // Output: 875438104 http://php.net/manual/en/function.rand.php