通过ajax检查php会话

Question

I'd like run INSERT query by ajax. That query need value from php session but js request doesn't see that value. Whay it's happend ? What should i do ?

Some code below:

JS:

$('div#content').on( "submit" , "form" , function ( event ){
        event.preventDefault();
        var href        = "ajaxRequest.php" + $(this).attr("action");
        var method      = $(this).attr("method");
        var values      = $(this).serializeArray();

        $.ajax({
            url         : href,
            data        : values,
            type        : method,
            dataType    : "html",
            cache       : false,
            success     : function ( content ){
                alert( content );
            }
        });

    });

PHP:

public function addBoard( $params = null )
        {
            $ID_user            =   $_SESSION[ 'user_id' ];
            $board_model        =   $params[ 'board_model' ];

            $query = "INSERT INTO `".prefix."boards` (                      
                        `ID_user` ,
                        `board_model`
                        )
                    VALUES (
                        '$ID_user', '$board_model');";

            if( $this->SQL->dbquery( $query ) )
                echo 'Added';
            else
                echo 'Failed';
        }

Answer 1

write session_start(); at top of your PHP page.