関連ワード:  php get array value multidimensional    php array find value multidimensional    php get array value by key multidimensional    php get array index by value multidimensional    php array_values multidimensional    php get max value multidimensional array    php multidimensional associative array get value by key    php get highest value in multidimensional array    php get specific value from multidimensional array    php get lowest value in multidimensional array