関連ワード:  php get first element in associative array    php get first item in associative array    php get first key in associative array    php get value of first element in associative array    php get key of first element in associative array    php first element in associative array    php get first value of associative array    php get first element of associative array without key    php get first entry of associative array  
結果 : php get first element in associative array