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@ 2014-06-21T01:50:35Z

<?php
$array =

array ( 1, 
        array (1, 2, 
                array ( 1, 2 ) 
        ), 
        array (1, 2, 3), 
        2,
        array( 1, 
            array ( 1, 
                array (1, 2) 
                    ) 
            ) 
);

function findActives($array, $path_child=null){  

    foreach ($array as $key => $unknown ) { 
        $path_child[] = $array[$key];        
       /*  if (in_array('2') {
             $path_child = array($key, "active");       
         } */
         if (is_array($unknown)) {
            findActives($unknown, $path_child);                        
        } 
    }
    return ($path_child);
}

// findActives($array);

function array_flatten($array) {

   $return = array();
   foreach ($array as $key => $value) {
       if (is_array($value)){ $return = array_merge($return, array_flatten($value));}
       else {$return[$key] = $value;}
   }
   return $return;

}

$path_child = array_flatten($array);

print_r($path_child);

Output for git.master, git.master_jit, rfc.property-hooks: Array ( [0] => 1 [1] => 1 [2] => 2 [3] => 2 [4] => 2 [5] => 1 [6] => 2 [7] => 3 [8] => 1 [9] => 1 [10] => 1 [11] => 2 )

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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