Recursive array_search
You can change your recursive function like this, which should give you the solution:
function recursive_array_search($needle, $haystack, $currentKey = '') {
foreach($haystack as $key=>$value) {
if (is_array($value)) {
$nextKey = recursive_array_search($needle,$value, $currentKey . '[' . $key . ']');
if ($nextKey) {
return $nextKey;
}
}
else if($value==$needle) {
return is_numeric($key) ? $currentKey . '[' .$key . ']' : $currentKey . '["' .$key . '"]';
}
}
return false;
}
This will result in
[1][1][0]["CategoryID"]
Since CategoryID is also a key in your multidimensional array.
If you don't want this, you can adapt the function to
function recursive_array_search($needle, $haystack, $currentKey = '') {
foreach($haystack as $key=>$value) {
if (is_array($value)) {
$nextKey = recursive_array_search($needle,$value, $currentKey . '[' . $key . ']');
if ($nextKey) {
return $nextKey;
}
}
else if($value==$needle) {
return is_numeric($key) ? $currentKey . '[' .$key . ']' : $currentKey;
}
}
return false;
}
You are ignoring the returned value of your inner call to recursive_array_search
. Don't do that.
/*
* Searches for $needle in the multidimensional array $haystack.
*
* @param mixed $needle The item to search for
* @param array $haystack The array to search
* @return array|bool The indices of $needle in $haystack across the
* various dimensions. FALSE if $needle was not found.
*/
function recursive_array_search($needle,$haystack) {
foreach($haystack as $key=>$value) {
if($needle===$value) {
return array($key);
} else if (is_array($value) && $subkey = recursive_array_search($needle,$value)) {
array_unshift($subkey, $key);
return $subkey;
}
}
}