Dear list -

I an writing a script that will simulate a chess board. On a move from e2 to e6 [see below] the variable in e2 is never assigned to e6. Here are some code snippets:


<?php
session_start();
session_name("Chess");
error_reporting(1);
 if ($_SESSION['flag'] != 1)
{
$flag = 1;
echo "<br />starting<br />";
$results = array(array("Br", "Bn", "Bb", "Bq", "Bk", "Bb", "Bn", "Br"),array("Bp", "Bp", "Bp", "Bp", "Bp", "Bp", "Bp", "Bp"), array("", "", "", "", "", "", "", ""),array("", "", "", "", "", "", "", ""),array("", "", "", "", "", "", "", ""), array("", "", "", "", "", "", "", ""),array("Wp", "Wp", "Wp", "Wp", "Wp", "Wp", "Wp", "Wp"), array("Wr", "Wn", "Wb", "Wq", "Wk", "Wb", "Wn", "Wr"));

$_SESSION['results'] = $results;
        for($i = 0; $i <8; $i++)
        {
                for ($j = 0; $j < 8; $j++)
                        printf("%s ", $results[$i][$j]);
                printf("<br />");
        }

$_SESSION[flag] = $flag;

<snip>

$board = array //Correlation of input array [chessboard] with internal array [results]
(
                "a8" => $results[0][0],
                "b8" => $results[0][1],
                "c8" => $results[0][2],
                "d8" => $results[0][3],
                "e8" => $results[0][4],
                "f8" => $results[0][5],
                "g8" => $results[0][6],
                "h8" => $results[0][7],
                "a7" => $results[1][0],
                "b7" => $results[1][1],
                "c7" => $results[1][2],
                "d7" => $results[1][3],
                "e7" => $results[1][4],
                "f7" => $results[1][5],
                "g7" => $results[1][6],
                "h7" => $results[1][7],
                "a6" => $results[2][0],
                "b6" => $results[2][1],
                "c6" => $results[2][2],
                "d6" => $results[2][3],
                "e6" => $results[2][4],
                "f6" => $results[2][5],
                "g6" => $results[2][6],
                "h6" => $results[2][7],
                "a5" => $results[3][0],
                "b5" => $results[3][1],
                "c5" => $results[3][2],
                "d5" => $results[3][3],
                "e5" => $results[3][4],
                "f5" => $results[3][5],
                "g5" => $results[3][6],
                "h5" => $results[3][7],
                "a4" => $results[4][0],
                "b4" => $results[4][1],
                "c4" => $results[4][2],
                "d4" => $results[4][3],
                "e4" => $results[4][4],
                "f4" => $results[4][5],
                "g4" => $results[4][6],
                "h4" => $results[4][7],
                "a3" => $results[5][0],
                "b3" => $results[5][1],
                "c3" => $results[5][2],
                "d3" => $results[5][3],
                "e3" => $results[5][4],
                "f3" => $results[5][5],
                "g3" => $results[5][6],
                "h3" => $results[5][7],
                "a2" => $results[6][0],
                "b2" => $results[6][1],
                "c2" => $results[6][2],
                "d2" => $results[6][3],
                "e2" => $results[6][4],
                "f2" => $results[6][5],
                "g2" => $results[6][6],
                "h2" => $results[6][7],
                "a1" => $results[7][0],
                "b1" => $results[7][1],
                "c1" => $results[7][2],
                "d1" => $results[7][3],
                "e1" => $results[7][4],
                "f1" => $results[7][5],
                "g1" => $results[7][6],
                "h1" => $results[7][7],
        );


$board2 = array //Correlation of input array [chessboard] with internal array [results]
(
                "a8" => "[0][0]",
                "b8" => "[0][1]",
                "c8" => "[0][2]",
                "d8" => "[0][3]",
                "e8" => "[0][4]",
                "f8" => "[0][5]",
                "g8" => "[0][6]",
                "h8" => "[0][7]",
                "a7" => "[1][0]",
                "b7" => "[1][1]",
                "c7" => "[1][2]",
                "d7" => "[1][3]",
                "e7" => "[1][4]",
                "f7" => "[1][5]",
                "g7" => "[1][6]",
                "h7" => "[1][7]",
                "a6" => "[2][0]",
                "b6" => "[2][1]",
                "c6" => "[2][2]",
                "d6" => "[2][3]",
                "e6" => "[2][4]",
                "f6" => "[2][5]",
                "g6" => "[2][6]",
                "h6" => "[2][7]",
                "a5" => "[3][0]",
                "b5" => "[3][1]",
                "c5" => "[3][2]",
                "d5" => "[3][3]",
                "e5" => "[3][4]",
                "f5" => "[3][5]",
                "g5" => "[3][6]",
                "h5" => "[3][7]",
                "a4" => "[4][0]",
                "b4" => "[4][1]",
                "c4" => "[4][2]",
                "d4" => "[4][3]",
                "e4" => "[4][4]",
                "f4" => "[4][5]",
                "g4" => "[4][6]",
                "h4" => "[4][7]",
                "a3" => "[5][0]",
                "b3" => "[5][1]",
                "c3" => "[5][2]",
                "d3" => "[5][3]",
                "e3" => "[5][4]",
                "f3" => "[5][5]",
                "g3" => "[5][6]",
                "h3" => "[5][7]",
                "a2" => "[6][0]",
                "b2" => "[6][1]",
                "c2" => "[6][2]",
                "d2" => "[6][3]",
                "e2" => "[6][4]",
                "f2" => "[6][5]",
                "g2" => "[6][6]",
                "h2" => "[6][7]",
                "a1" => "[7][0]",
                "b1" => "[7][1]",
                "c1" => "[7][2]",
                "d1" => "[7][3]",
                "e1" => "[7][4]",
                "f1" => "[7][5]",
                "g1" => "[7][6]",
                "h1" => "[7][7]",
        );
        $results = $_SESSION['results'];

        $a = "$";
        $a .="results";
        $a .= "$board2[$value_from]";

        $b = "$";
        $b .="results";
        $b .= "$board2[$value_to]";

        $bb = $board[$value_to];
        $aa = $board[$value_from];

        $b = $aa;
        $a = '';
========
I am not able to assign the value Wp to $b which is $results[2][4]. $a, which is $results[6][4] should be empty.

Help and advice, please.

Ethan

MySQL 5.1 PHP 5.3.3-6 Linux [Debian (sid)]


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