PHP recursive JSON class instance code

This article mainly introduces the implementation method of PHP recursive JSON class, can realize the parsing of index array and numeric array, and then realize the function of recursive array to return JSON string.
The specific implementation code is as follows:

<?PHP/** @ anthor:qd * @ time:2013-09-27*/ classjson{Private $ARR=Array();//incoming Array//constructor  Public functionJson$array)  {   if(!Is_array($array))return false; $this->arr =$array; }  //Parse main function  Public functionMainarr () {$arr=$this-ARR; if($this->typearr ($arr))   {    $json=$this->numarr ($arr); }   Else   {    $json=$this->indexarr ($arr); }   return $json; }  //parsing an indexed array  Public functionIndexarr ($arr)  {   $str=""; foreach($arr  as $k=$value)   {    if(Is_array($value))    {     if($this->typearr ($value)) {$sun=$this->numarr ($value);} Else{$sun=$this->indexarr ($value);} if(Strpos($sun,"}") ||Strpos($sun,"]"))     {      $str.= """.$k."":".$sun.","; }     Else     {      $str.= """.$k."":"".$sun."","; }    }    Else    {      $str.= """.$k."":"".$value."","; }   }   $str= "{".Trim($str,",")."}"; return $str; }  //parsing a numeric array  Public functionNumarr ($arr)   {   $str= ""; foreach($arr  as $value)   {    if(Is_array($value))    {     if($this->typearr ($value)) {$sun=$this->numarr ($value);} Else{$sun=$this->indexarr ($value);} if(Strpos($sun,"}") ||Strpos($sun,"]"))     {      $str.=$sun.","; }     Else     {      $str.= """.$sun."","; }    }    Else    {     $str.= """.$value."","; }   }   $str= "[".Trim($str,",")."]"; return $str; }  //Verify that an array is not strictly numeric indexed  Public functionTypearr ($arr)  {   if(array_values($arr) ===$arr)return true; return false; } } ?>

PHP recursive JSON class instance code