関連ワード:  php order associative array by value    php sort associative array by value    php order multidimensional array by value    php sort associative array by value descending    php sort associative array by value alphabetically    php sort multidimensional array by value    php sort multidimensional array by value alphabetically    php sort multidimensional array by value descending    php sort multidimensional array by value ascending    php sort multidimensional array by value alphabetically case insensitive