PHP - 数组 - 基于键访问兄弟/子键值

Have this array (as JSON):

{
  "token_name": "C_ROOT",
  "token_group": "C_BLOCK",
  "group": true,
  "body": [
    [
      {
        "token_name_org": "T_VARIABLE",
        "token": 320,
        "value": "sort",
        "line": 2,
        "token_group": "VARIABLES",
        "token_name": "C_VARIABLE"
      },
      {
        "token_name_org": "C_ASSIGNMENT_EQUAL",
        "line": 2,
        "value": "=",
        "token": "VALUE",
        "token_group": "ASSIGNMENTS"
      },
      {
        "token_name_org": "T_VARIABLE",
        "token": 320,
        "value": "_GET",
        "line": 2,
        "token_group": "VARIABLES",
        "token_name": "C_VARIABLE",
        "args": [
          [
            {
              "token_name_org": "T_CONSTANT_ENCAPSED_STRING",
              "token": 323,
              "value": "sort",
              "line": 2,
              "token_group": "STRINGS",
              "token_name": "C_STRING"
            }
          ]
        ]
      }
    ]
  ]
}

Wrote this code to search for key "value" being "sort".

    public function search_var($array,$var)
    {


        foreach($array as $key=>$value)
        {

            if(is_array($value))
            {

                $this->search_var($value,$var);

            }else{
                if(isset($array["value"]) && $array["value"] == $var)
                {
                    print $value."
";
                }   


            }

        }

    }

  print_r($scanner->search_var($map,"sort"));

Don't know how can I reference in my code the siblings and childs? I.e

Now the output is:

T_VARIABLE
320
sort
2
VARIABLES
C_VARIABLE

How can I make it that I see as output only:

/sort/=/_GET/sort

Each value between "/" is a key "value" in sibling or child (last case)

Thanks,

It's not clear from the question what to return when body contains more information than the one posted in the question. This answers assumes it never does.

A possible solution is to use array_walk_recursive() and collect the values associated with the value keys into an array. After the walk, the collected values are simply joined using the desired separator (/):

$text = '{"token_name":"C_ROOT","token_group":"C_BLOCK","group":true,"body":[[{"token_name_org":"T_VARIABLE","token":320,"value":"sort","line":2,"token_group":"VARIABLES","token_name":"C_VARIABLE"},{"token_name_org":"C_ASSIGNMENT_EQUAL","line":2,"value":"=","token":"VALUE","token_group":"ASSIGNMENTS"},{"token_name_org":"T_VARIABLE","token":320,"value":"_GET","line":2,"token_group":"VARIABLES","token_name":"C_VARIABLE","args":[[{"token_name_org":"T_CONSTANT_ENCAPSED_STRING","token":323,"value":"sort","line":2,"token_group":"STRINGS","token_name":"C_STRING"}]]}],[{"token_name_org":"T_VARIABLE","token":320,"value":"mort","line":2,"token_group":"VARIABLES","token_name":"C_VARIABLE"},{"token_name_org":"C_ASSIGNMENT_EQUAL","line":2,"value":"=","token":"VALUE","token_group":"ASSIGNMENTS"},{"token_name_org":"T_VARIABLE","token":320,"value":"_GET","line":2,"token_group":"VARIABLES","token_name":"C_VARIABLE","args":[[{"token_name_org":"T_CONSTANT_ENCAPSED_STRING","token":323,"value":"mort","line":2,"token_group":"STRINGS","token_name":"C_STRING"}]]}]]}';

$array = json_decode($text, TRUE);


// Collect the values here.
// Start with an empty string to force a leading '/' in the output
$path = array('');
// Walk the array, put the desired values in $path
array_walk_recursive(
    $array,
    function($value, $key) use (&$path) {      // use reference to modify $path inside the function
        if ($key == 'value') {
            $path[] = $value;
        }
    }
);

// Join the collected values and output the result
echo(implode('/', $path));

Your question is very badly worded but I believe you are trying to achieve this:

public function search_var($array,$var) {
    foreach($array as $key=>$value) {
        if(is_array($value)) {
            $this->search_var($value,$var);
        } elseif($key == $var) {
            print "/".$value;
        }
    }
}