PHP如何递归实现json类呢?下面是小编给大家提供的实现方法，大家可以参考阅读，更多详情请关注应届毕业生考试网。
代码如下:
<?php
/*
* @ anthor:QD
* @ time: 2013-09-27
*/
class json{
private $Arr = array(); //传入数组
//构造器
public function json($array)
{
if(!is_array($array)) return false;
$this->Arr = $array;
}
//解析主函数
public function MainArr()
{
$arr = $this->Arr;
if($this->TypeArr($arr))
{
$json = $this->NumArr($arr);
}
else
{
$json = $this->IndexArr($arr);
}
return $json;
}
//解析索引数组
public function IndexArr($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."",";
}
}
$str = "{"($str,",")."}";
return $str;
}
//解析数字数组
public function NumArr($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."",";
}
}
$str = "["($str,",")."]";
return $str;
}
//检验一个数组是不是严格数字索引
public function TypeArr($arr)
{
if(array_values($arr) === $arr) return true;
return false;
}
}
?>
