Reply To: Store subfield values in an array and check if a certain value exists

• nightillusions

• October 28, 2017 at 3:11 am

I have this little function to search through an object or array:

/**
 * Search for a value in a multidimensional array or object
 *
 * @param $needle       What to search for
 * @param $haystack     The array to search in
 * @param bool $strict  Strict mode
 * @param $needle_field The field name to search in
 * @return bool
 *
 * @author Pascal Jordin
 */
function search_recursive($needle, $haystack, $strict = false, $needle_field = false){
    if ($needle_field) {
        if (is_array($haystack)){
            foreach ($haystack as $item) {
                if (isset($item[$needle_field]) && ($strict ? $item[$needle_field] === $needle : $item[$needle_field] == $needle) || ((is_object($item) || is_array($item)) && search_recursive($needle, $item, $strict, $needle_field))) {
                    return true;
                }
            }
		} elseif (is_object($haystack)){
            foreach ($haystack as $item) {
                if (isset($item->$needle_field) && ($strict ? $item->$needle_field === $needle : $item->$needle_field == $needle) || ((is_object($item) || is_array($item)) && search_recursive($needle, $item, $strict, $needle_field))) {
                    return true;
                }
            }
		}
    } else {
        if (is_array($haystack) || is_object($haystack) || $haystack instanceof Traversable) {
            foreach ($haystack as $item) {
                if (($strict ? $item === $needle : $item == $needle) || ((is_object($item) || is_array($item)) && search_recursive($needle, $item, $strict, $needle_field))) {
                    return true;
                }
            }
        }
    }
    return false;
}

With this you could search for it like:

$field = get_field('repeater_field_name');
$match = search_recursive('the phrase', $field, false, 'title');

Then $match is true if phrase match value of any sub field named title.