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  1. #1
    Regular Coder Arcticwarrio's Avatar
    Join Date
    May 2012
    Thanked 85 Times in 85 Posts

    Password, Salt, any length Random string Generator

    i made this for adding salt to a password also for temporary passwords or pin numbers, could also be used for creating password reset keys i was that impressed with it i decided to share it with you all.

    unique string chars or duplicated,
    upper case, lowercase + numbers
    Upper case + numbers
    Numbers only

    feel free to message me if you need help modifying it for your own needs
    could easily be altered to generate lottery numbers etc
    added lottery numbers generator

    PHP Code:
    function GenCode($len,$type 1,$uni 0){
    //GenCode(length of string,$type = 1, 2 or 3,unique chars?)
        //Unique Switch 1 for on 0 or ommited for off
        //Type Switch 1 = a-z, A-Z, 0-9     Usage: GenCode(8); or GenCode(8,1);
        //Type Switch 2 = A-Z, 0-9          Usage: GenCode(10,2);
        //Type Switch 3 = 0-9               Usage: GenCode(4,3,1);
        //Type Switch 4 = 0-49               Usage: GenCode(6,4,1); <-- Lottery Numbers

        //Reset Function
    $code ='';
    //Array of chars to choose from, feel free to add more arrays
    $codestring['1'] = array('a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z','A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z','1','2','3','4','5','6','7','8','9','0');
    $codestring['2'] = array('A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z','1','2','3','4','5','6','7','8','9','0');
    $codestring['3'] = array('1','2','3','4','5','6','7','8','9','0');
    $codestring['4'] = array('|1|','|2|','|3|','|4|','|5|','|6|','|7|','|8|','|9|','|10|','|11|','|12|','|13|','|14|','|15|','|16|','|17|','|18|','|19|','|20|','|21|','|22|','|23|','|24|','|25|','|26|','|27|','|28|','|29|','|30|','|31|','|32|','|33|','|34|','|35|','|36|','|37|','|38|','|39|','|40|','|41|','|42|','|43|','|44|','|45|','|46|','|47|','|48|','|49|');
    //see if the string should contain unique chars
    if ($uni == 1){
    //check if theres enough chars to have a unique string
    if ($len count($codestring[$type])-1){ echo "error length too long for unique string"; exit;}
    //loop for lenght of $len NOT allowing duplicate chars
    for ($i=1$i<=$len$i++){
    //add char from chosen array to the end of the variable $code
    $tempx '"'.$codestring[$type][rand(0,count($codestring[$type])-1)].'"';
                if (
    strstr($code$tempx) != false){
    $code .= $tempx;
    //loop for lenght of $len allowing duplicate chars
    for ($i=1$i<=$len$i++){
    //add char from chosen array to the end of the variable $code
    $code .= $codestring[$type][rand(0,count($codestring[$type])-1)];
    //clean up the code
    $code str_replace('"','',$code);
    $code str_replace('|',' ',$code);
    //send $code back to where GenCode() was called from
    return $code;

    Last edited by Arcticwarrio; 08-09-2012 at 12:23 AM. Reason: Tweaked code to remove bug for two 00 in the unique pin
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