PHP : Class Pengacak Kombinasi String v0.2

<?php
/* 
 * String Combination Generator v0.2
 * coder haripinter - hari\at/elangsakti.com
 * Created : Wed, Jan 22 - 2014, 06.00 WIB. Malang - Indonesia
 * Recoded : Sat, Jan 25 - 2014, 20.01 WIB. Malang - Indonesia
 *   Changed: - Restructuring code
 *      - Changing format from 321 to 123
 *      - Ascending result
 *      - Faster if use combine format, ex. xxx65
 * 
 * $Format : format string
 *           ex. xxx => all string will combine
 *               xx4 => all string combine except 4, 4 is default value
 *
 * $Chars : list of character to generate
 *           ex. '0123456789' or 'abcde... etc'
 * 
 * $Result : the result
 */
class SCGenerator{
 var $Result;
 var $Format;
 var $Chars;
 
 var $Len;
 var $Clean_format;
 
 function setFormat($str){
     $this->Format = $str;
 }
 
 function setChars($str){
     $this->Chars = $str;
 }
 
 function get_cleanformat(){
  $format = $this->Format;
  $this->Len = strlen($format);
  $len = $this->Len;
  
  $clean = 0;
  $format_tmp = '';
  for($a=0; $a<$len; $a++){
   if(strtolower($format[$a])=='x'){
    $clean++;
    $format_tmp .= 'x';
   }else{
    $format_tmp .= $format[$a];
   }
  }
  $this->Format = $format_tmp;
  $this->Clean_format = $clean;
  return $clean;
 }
 
    function Generate(){
  $chars = $this->Chars;
  $format = $this->Format;
  $formatlen = $this->get_cleanformat();
        $charlen = strlen($chars);
  
  if($formatlen<1 or $charlen<1){
   echo "You must define both Chars and Format first!";
   exit();
  }
  
        $pis = array();
        for($a=0; $a<$formatlen; $a++){
            $pis[$a] = 0;
        }
        
        $result = array();
        $loop = false;
        do{
            $tmp = '';
         $xyz = true;
         for($x=0; $x<$formatlen; $x++){
          if($chars[$pis[$x]]==''){
           $tmp .= $chars[0];
          }else{
           $tmp .= $chars[$pis[$x]];
          }
          $xyz = (($chars[$pis[$x]]==$chars[$charlen]) && $xyz);
          $loop = $xyz;
          if($chars[$pis[$x]]==$chars[$charlen]){
           $pis[$x+1]++;
           $pis[$x] = 0;
          }
          if($x==0){
           $pis[$x]++;
          }
         }
         if(!$xyz){
          $result[] = $this->reverse($tmp);
         }
        }while(!$loop);
  
  $this->Result = $result;
        return $this->Result;
    }
 
 function reverse($strs){
  $format = $this->Format;
  $cleanf = $this->Clean_format;
  $len = $this->Len;
  
  $tmp = '';
  for($a=$cleanf; $a>=0; $a--){
   $tmp .= $strs[$cleanf--];
  }
  
  $tmq = '';
  if($len>$cleanf){
   $x = 0;
   for($a=0; $a<$len; $a++){
    if($format[$a]=='x'){
     $tmq .= $tmp[$x]; 
     $x++;
    }else{
     $tmq .= $format[$a];
    }
   }
  }else{
   $tmq = $tmp;
  }
  return $tmq;
 }
}
?>

<?php
include_once('SCGenerator2.php');

$scg2 = new SCGenerator();

// -- number
$char = '0123456789';
$format = 'xx1';

echo "\n\nVersi 2\n";
$start = microtime(true);
$scg2->setChars($char);
$scg2->setFormat($format);
$scg2->Generate();
$stop = microtime(true);
$secs = ($stop-$start);
print_r($scg2->Result);
echo $secs." seconds\n";

$format = 'xx';

echo "\n\nVersi 2\n";
$start = microtime(true);
$scg2->setFormat($format);
$scg2->Generate();
$stop = microtime(true);
$secs = ($stop-$start);
print_r($scg2->Result);
echo $secs." seconds\n";

?>

Versi 2
Array
(
    [0] => 001
    [1] => 011
    [2] => 021
    [3] => 031
    [4] => 041
    [5] => 051
    [6] => 061
    [7] => 071
    [8] => 081
    [9] => 091
    [10] => 101
    [11] => 111
    [12] => 121
    [13] => 131
    [14] => 141
    [15] => 151
    [16] => 161
    [17] => 171
    [18] => 181
    [19] => 191
    [20] => 201
    [21] => 211
    [22] => 221
    [23] => 231
    [24] => 241
    [25] => 251
    [26] => 261
    [27] => 271
    [28] => 281
    [29] => 291
    [30] => 301
    [31] => 311
    [32] => 321
    [33] => 331
    [34] => 341
    [35] => 351
    [36] => 361
    [37] => 371
    [38] => 381
    [39] => 391
    [40] => 401
    [41] => 411
    [42] => 421
    [43] => 431
    [44] => 441
    [45] => 451
    [46] => 461
    [47] => 471
    [48] => 481
    [49] => 491
    [50] => 501
    [51] => 511
    [52] => 521
    [53] => 531
    [54] => 541
    [55] => 551
    [56] => 561
    [57] => 571
    [58] => 581
    [59] => 591
    [60] => 601
    [61] => 611
    [62] => 621
    [63] => 631
    [64] => 641
    [65] => 651
    [66] => 661
    [67] => 671
    [68] => 681
    [69] => 691
    [70] => 701
    [71] => 711
    [72] => 721
    [73] => 731
    [74] => 741
    [75] => 751
    [76] => 761
    [77] => 771
    [78] => 781
    [79] => 791
    [80] => 801
    [81] => 811
    [82] => 821
    [83] => 831
    [84] => 841
    [85] => 851
    [86] => 861
    [87] => 871
    [88] => 881
    [89] => 891
    [90] => 901
    [91] => 911
    [92] => 921
    [93] => 931
    [94] => 941
    [95] => 951
    [96] => 961
    [97] => 971
    [98] => 981
    [99] => 991
)
0.0029339790344238 seconds


Versi 2
Array
(
    [0] => 00
    [1] => 01
    [2] => 02
    [3] => 03
    [4] => 04
    [5] => 05
    [6] => 06
    [7] => 07
    [8] => 08
    [9] => 09
    [10] => 10
    [11] => 11
    [12] => 12
    [13] => 13
    [14] => 14
    [15] => 15
    [16] => 16
    [17] => 17
    [18] => 18
    [19] => 19
    [20] => 20
    [21] => 21
    [22] => 22
    [23] => 23
    [24] => 24
    [25] => 25
    [26] => 26
    [27] => 27
    [28] => 28
    [29] => 29
    [30] => 30
    [31] => 31
    [32] => 32
    [33] => 33
    [34] => 34
    [35] => 35
    [36] => 36
    [37] => 37
    [38] => 38
    [39] => 39
    [40] => 40
    [41] => 41
    [42] => 42
    [43] => 43
    [44] => 44
    [45] => 45
    [46] => 46
    [47] => 47
    [48] => 48
    [49] => 49
    [50] => 50
    [51] => 51
    [52] => 52
    [53] => 53
    [54] => 54
    [55] => 55
    [56] => 56
    [57] => 57
    [58] => 58
    [59] => 59
    [60] => 60
    [61] => 61
    [62] => 62
    [63] => 63
    [64] => 64
    [65] => 65
    [66] => 66
    [67] => 67
    [68] => 68
    [69] => 69
    [70] => 70
    [71] => 71
    [72] => 72
    [73] => 73
    [74] => 74
    [75] => 75
    [76] => 76
    [77] => 77
    [78] => 78
    [79] => 79
    [80] => 80
    [81] => 81
    [82] => 82
    [83] => 83
    [84] => 84
    [85] => 85
    [86] => 86
    [87] => 87
    [88] => 88
    [89] => 89
    [90] => 90
    [91] => 91
    [92] => 92
    [93] => 93
    [94] => 94
    [95] => 95
    [96] => 96
    [97] => 97
    [98] => 98
    [99] => 99
)
0.0026800632476807 seconds