PHP JSON Deep Search | Returns the value of an element with a key value in an json of uncertain depth.

json_deep_search.php

if (! function_exists('json_deep_search'))
{
	/**
	 * Author : Savaş Dersim ÇELİK
	 * Returns the value of an element with a key value in an json of uncertain depth.
	 *
	 * @param json  $json
	 * @param string $key
	 *
	 * @return mixed|false
	 */
	function json_deep_search($json, string $key)    
	{    
		$array = json_decode($json, true);
		if (is_array($array)) {
			if (isset($array[$key])) {
				return $array[$key];
			}else{
				foreach ($array as $value) {
					if (is_array($value)) {
						$result = json_deep_search(json_encode($value), $key);
						if ($result) {
							return $result;
						}
					}
				}
			}
		}
		return false;
	}
}