array_search_recursive() .. help me find where value exists in multidimensional array

the following function nicely tells me if value is found or not in array ..

function array_search_recursive($needle, $haystack) {
    foreach ($haystac开发者_运维技巧k as $value) {
        if (is_array($value) && array_search_recursive($needle, $value)) return true;
        else if ($value == $needle) return true;
    }
    return false;
}

but i want that array index number where the value exits in the array.

I have modified your function by adding a third parameter passed by reference.

The function will return true if the needle found. Also, the $indexes is an array of indexes to the found value.

function array_search_recursive($needle, $haystack, &$indexes=array())
{
    foreach ($haystack as $key => $value) {
        if (is_array($value)) {
            $indexes[] = $key;
            $status = array_search_recursive($needle, $value, $indexes);
            if ($status) {
                return true;
            } else {
                $indexes = array();
            }
        } else if ($value == $needle) {
            $indexes[] = $key;
            return true;
        }
    }
    return false;
}

Example:

$haystack1 = array(
    0 => 'Sample 1',
    1 => 'Sample 2',
    2 => array(
        'Key' => 'Sample 3',
        1 => array(
            0 => 'Sample 4',
            1 => 'Sample 5'
        )
    ),
    4 => 'Sample 6',
    3 => array(
        0 => 'Sample 7'
        ),
);

The indexes to "Sample 5" are [2][1][1].

if (array_search_recursive('Sample 5', $haystack1, $indexes)) {
/**
 * Output
 * Array
 * (
 *      [0] => 2
 *      [1] => 1
 *      [2] => 1
 * )
 */
    echo '<pre>';
    print_r ($indexes);
    echo '</pre>';
    die;
}