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PHP 多维数组转换一维数组

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Release: 2016-06-23 13:35:18
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下面是我写的将多维数组转换为一维数组的类方法,转换的一维数组的每个元素包含了相应的值在原有多维数组中的key,value以及维度(即深度),如果对应的原有元素也是数组,则相应的一维元素的value则表示为--(当然,这个可以改)。在格式化输出多维数组的时候比较有效。

namespace app\libs\utils;class ArrayHelper{    public static function re_array($array, $p_node_deepth=0, $sub_node_deepth=0)    {        $out = array();        foreach($array as $k=>$v){            if(is_array($v)){                $tmp = array("key"=>$k, "value"=>"--","deepth"=>$p_node_deepth);                $out[] = $tmp;                //数组的话,级联调用                $out = array_merge($out, self::re_array($v, $sub_node_deepth+1, $p_node_deepth+1));            }else{                $tmp = array("key"=>$k, "value"=>$v,"deepth"=>$sub_node_deepth);                $out[] = $tmp;            }        }        return $out;    }}
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例:

$a = array(    "code"=>0,    "detail"=>array("msg"=>"get data success"),    "func"=>"api");print_r(ArrayHelper::re_array($a));
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结果:

Array([0] => Array    (        [key] => code        [value] => 0        [deepth] => 0    )[1] => Array    (        [key] => detail        [value] => --        [deepth] => 0    )[2] => Array    (        [key] => msg        [value] => get data success        [deepth] => 1    )[3] => Array    (        [key] => func        [value] => api        [deepth] => 0    ))
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