original_string: function ARC4_init($key = '')
      {
          $this->arc4 = '';
  
          // setup the control array
          if (mb_strlen($key, '8bit') == 0) {
              return;
          }
  
          $k = '';
          while (mb_strlen($k, '8bit') < 256) {
              $k .= $key;
          }
  
          $k = substr($k, 0, 256);
          for ($i = 0; $i < 256; $i++) {
              $this->arc4 .= chr($i);
          }
  
          $j = 0;
  
          for ($i = 0; $i < 256; $i++) {
              $t = $this->arc4[$i];
              $j = ($j + ord($t) + ord($k[$i])) % 256;
              $this->arc4[$i] = $this->arc4[$j];
              $this->arc4[$j] = $t;
          }
      }
code: function ARC4_init($key = '')
      {
          $this->arc4 = '';
  
          // setup the control array
          if (mb_strlen($key, '8bit') == 0) {
              return;
          }
  
          $k = '';
          while (mb_strlen($k, '8bit') < 256) {
              $k .= $key;
          }
  
          $k = substr($k, 0, 256);
          for ($i = 0; $i < 256; $i++) {
              $this->arc4 .= chr($i);
          }
  
          $j = 0;
  
          for ($i = 0; $i < 256; $i++) {
              $t = $this->arc4[$i];
              $j = ($j + ord($t) + ord($k[$i])) % 256;
              $this->arc4[$i] = $this->arc4[$j];
              $this->arc4[$j] = $t;
          }
      }
code_tokens: function ARC4_init ( $ key = '' ) { $ this -> arc4 = '' ; // setup the control array if ( mb_strlen ( $ key , '8bit' ) == 0 ) { return ; } $ k = '' ; while ( mb_strlen ( $ k , '8bit' ) < 256 ) { $ k .= $ key ; } $ k = substr ( $ k , 0 , 256 ) ; for ( $ i = 0 ; $ i < 256 ; $ i ++ ) { $ this -> arc4 .= chr ( $ i ) ; } $ j = 0 ; for ( $ i = 0 ; $ i < 256 ; $ i ++ ) { $ t = $ this -> arc4 [ $ i ] ; $ j = ( $ j + ord ( $ t ) + ord ( $ k [ $ i ] ) ) % 256 ; $ this -> arc4 [ $ i ] = $ this -> arc4 [ $ j ] ; $ this -> arc4 [ $ j ] = $ t ; } }
docstring: initialize the ARC4 encryption
  
  @param string $key
docstring_tokens: initialize the ARC4 encryption