Return true/false on searching multidimensional array - php

Question

I have the following multidimensional $array:
Array
(
[0] => Array
(
[domain] => example.tld
[type] => 2
)
[1] => Array
(
[domain] => other.tld
[type] => 2
)
[2] => Array
(
[domain] => blaah.tld
[type] => 2
)
)
I simply want to recursively search all the arrays on both key and value, and return true if the key/value was found or false if nothing was found.
Expected output:
search_multi_array($array, 'domain', 'other.tld'); // Will return true
search_multi_array($array, 'type', 'other.tld'); // Will return false
search_multi_array($array, 'domain', 'google.com'); // Will return false
I've figured out a ugly-ugly method to search against the domain against all keys with this function:
function search_multi_array($search_value, $the_array) {
if (is_array($the_array)) {
foreach ($the_array as $key => $value) {
$result = search_multi_array($search_value, $value);
if (is_array($result)) {
return true;
} elseif ($result == true) {
$return[] = $key;
return $return;
}
}
return false;
} else {
if ($search_value == $the_array) {
return true;
}
else
return false;
}
}
Can anyone do better and match both against the key and value in a more elegant way?

Answer 1

If it doesn't go beyond those 2 levels, flipping keys/merging makes life a lot more pleasant:
<?php
$data = array
(
'0' => array
(
'domain' => 'example.tld',
'type' => 2
),
'1' => array
(
'domain' => 'other.tld',
'type' => 2,
),
'2' => array
(
'domain' => 'blaah.tld',
'type' => 2
)
);
$altered = call_user_func_array('array_merge_recursive',$data);
var_dump($altered);
var_dump(in_array('other.tld',$altered['domain']));
var_dump(in_array('other.tld',$altered['type']));
var_dump(in_array('google.com',$altered['domain']));
To go beyond 2nd level, we have to loop once through all the nodes:
$option2 = array();
foreach(new RecursiveIteratorIterator(new RecursiveArrayIterator($data)) as $key => $value){
$option2[$key][] = $value;
}
var_dump($option2);

Answer 2

One way is to create a reverse mapping from [domain] => [indices] and from [type] => [indices]. It's probably not going to save you much unless you do lots of searches.
(hint: you probably want to wrap it into a class to prevent inconsistencies in the mappings)
also, anytime you see something like this:
if ($search_value == $the_array) {
return true;
} else {
return false;
}
you can always turn it into:
return $search_value == $the_array;

Answer 3

function search_mutli_array($SearchKey, $SearchValue, $Haystack)
{
$Result = false;
if (is_array($Haystack))
{
foreach ($Haystack as $Key => $Value)
{
if (is_array($Value))
{
if (search_mutli_array($SearchKey, $SearchValue, $Value))
{
$Result = true;
break;
}
}
else if ($SearchKey == $Key && $SearchValue == $Value)
{
$Result = true;
break;
}
}
}
return $Result;
}