Re: Error in variable assignment

On 11 April 2011 20:28, Ethan Rosenberg <ethros@earthlink.net> wrote: > 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)] > > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > > You are suppressing errors (at least based upon the code you've supplied). Change ... error_reporting(1); // Will only report E_ERROR - Fatal run-time errors. These indicate errors that can not be recovered from, such as a memory allocation problem. Execution of the script is halted. to error_reporting(-1); // Shows everything. The code you've supplied is missing the values for the $value_from and $value_to.