array search multidimensional in php? - php

Question

I want to create a function that for a random array will search for a given key and will return all values for that key in an array. Here is what I have written so far...
$testArray = array (
'subArray1' => array(
'key1' => "Sub array 1 value 1",
'key2' => "Sub array 1 value 2",
'key3' => array(
'subkey1' => array(
'subsubkey' => 'sub sub sub value',
),
),
),
'subArray2' => array(
'key1' => "Sub array 2 value 1",
'key2' => "Sub array 2 value 2",
'key3' => array(
'subkey1' => array(
'subsubkey' => 'sub sub sub value 2',
),
),
),
);
function recursiveSearch($testArray,$key,$results)
{
// var_dump($testArray);
if(is_array($testArray)){
foreach($testArray as $k => $v){
if($k == $key){
return $v;
}
else if(is_array($v)){
array_push($results, recursiveSearch($v,$key,$results));
}
}
}
else{
return ;
}
return $results;
}
$empt = array();
$output = recursiveSearch($testArray,'subsubkey',$empt);
var_dump($output);
This the output I get at the moment... I want to get a simple array with the values in it.
array(2) {
[0]=>
array(1) {
[0]=>
array(1) {
[0]=>
string(17) "sub sub sub value"
}
}
[1]=>
array(2) {
[0]=>
array(1) {
[0]=>
array(1) {
[0]=>
string(17) "sub sub sub value"
}
}
[1]=>
array(2) {
[0]=>
array(1) {
[0]=>
array(1) {
[0]=>
string(17) "sub sub sub value"
}
}
[1]=>
string(19) "sub sub sub value 2"
}
}
}
I am not really sure why the result array is like this ...
The format for the result array that I want is :
['sub sub sub value','sub sub sub value 2']

Answer 1

An improved version of xPheRe
/**
* Recursive find in the given $array and $needle.
* #param $array The input array.
* #param $needle The needle to find.
* #return Returns all the values find by the given key.
*/
function recursiveFind(array $array, $needle)
{
$iterator = new RecursiveArrayIterator($array);
$recursive = new RecursiveIteratorIterator($iterator,
RecursiveIteratorIterator::SELF_FIRST);
$results = array();
foreach ($recursive as $key => $value) {
if ($key === $needle) {
array_push($results, $value);
}
}
return $results;
}
Usage
$output = recursiveFind($testArray, 'subsubkey');
var_dump($output);
Output
array(2) {
[0]=>
string(17) "sub sub sub value"
[1]=>
string(19) "sub sub sub value 2"
}

Answer 2

The updated function of my version is as follows:
function recursiveSearch($testArray,$key){
$empt = array();
function recurSearch($testArray,$key,$results)
{
if(is_array($testArray)){
foreach($testArray as $k => $v){
if($k === $key){
array_push($results,$v);
}
else if(is_array($v)){
$temp = array();
$tempres = recurSearch($v,$key,$temp);
$results = array_merge($results,$tempres);
}
}
}
return $results;
}
$res = recurSearch($testArray,$key,$empt);
return $res;
}
seems to work : )