Questions about the PHP class

Problems with the PHP class
Call source

PHP Code

  
   $obj _car = new Class_car; $num _carid = $obj _car->fn_caradd ($_post);

Class source

PHP Code

  
   Class Class_car {    function fn_caradd ($arr _post) {        print_r ($arr _post);}    }

This will output the array normally

PHP Code

  
   Array (    [action_post] = Caradd    [Str_postchk] =     [Str_carname] = Golf    [Num_carbrand] = 7    [Num_carmodel] = 615    [Str_caremiss] + 1.4T    [Str_cartrans] = MT)

Class source

PHP Code

  
   Class Class_car {    function fn_caradd ($arr _post) {        print_r ($arr _post["Str_carname"]);}    }

This output garbled, solve, the file itself code is no problem

------Solution--------------------
The header sends the encoding.
Add the program to the beginning of the line.

Header (' content-type:text/html; Charset=utf-8 ');

