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kaitokid41

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  1. kaitokid41
    HI! I'm almost finished with my code. And I need one last help. I don't think I'm doing this correctly in the 2nd iteration when $i = 1? And how Do I get rid of the last (unnecessary and empty) matrix? THANKS! <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Matrix Solver</title> </head> <body> <?php $transformation = $_POST['string']; $transbits = explode(";",$transformation); for($i=0; $i<count($transbits);$i++){ if(strcmp(substr($transbits[$i],0,5),"trans")==0){ preg_match('#\((.*?)\)#', $transbits[$i], $match); $extrans = explode(",",$match[1]); ?> <table width="50" border="5" align="left" cellpadding="5"> <tr> <td><?php $cell[$i][0][0] = 1; echo $cell[$i][0][0] ?></td> <td><?php $cell[$i][0][1] = 0; echo $cell[$i][0][1] ?></td> <td><?php $cell[$i][0][2] = 0; echo $cell[$i][0][2] ?></td> <td><?php $cell[$i][0][3] = $extrans[0]; echo $cell[$i][0][3] ?></td> </tr> <tr> <td><?php $cell[$i][1][0] = 0; echo $cell[$i][1][0] ?></td> <td><?php $cell[$i][1][1] = 1; echo $cell[$i][1][1] ?></td> <td><?php $cell[$i][1][2] = 0; echo $cell[$i][1][2] ?></td> <td><?php $cell[$i][1][3] = $extrans[1]; echo $cell[$i][1][3] ?></td> </tr> <tr> <td><?php $cell[$i][2][0] = 0; echo $cell[$i][2][0] ?></td> <td><?php $cell[$i][2][1] = 0; echo $cell[$i][2][1] ?></td> <td><?php $cell[$i][2][2] = 1; echo $cell[$i][2][2] ?></td> <td><?php $cell[$i][2][3] = $extrans[2]; echo $cell[$i][2][3] ?></td> </tr> <tr> <td><?php $cell[$i][3][0] = 0; echo $cell[$i][3][0] ?></td> <td><?php $cell[$i][3][1] = 0; echo $cell[$i][3][1] ?></td> <td><?php $cell[$i][3][2] = 0; echo $cell[$i][3][2] ?></td> <td><?php $cell[$i][3][3] = 1; echo $cell[$i][3][3] ?></td> </tr> </table> <?php } else if(strcmp(substr($transbits[$i],0,3),"rot")==0){ preg_match('#\((.*?)\)#', $transbits[$i], $match); //echo "$match[1] <br/>"; if (strcmp(substr($transbits[$i],3,1),"x")==0){ ?> <table width="50" border="5" align="left" cellpadding="5"> <tr> <td><?php $cell[$i][0][0] = 1; echo $cell[$i][0][0] ?></td> <td><?php $cell[$i][0][1] = 0; echo $cell[$i][0][1] ?></td> <td><?php $cell[$i][0][2] = 0; echo $cell[$i][0][2] ?></td> <td><?php $cell[$i][0][3] = 0; echo $cell[$i][0][3] ?></td> </tr> <tr> <td><?php $cell[$i][1][0] = 0; echo $cell[$i][1][0] ?></td> <td><?php $cell[$i][1][1] = intval(cos(deg2rad($match[1]))); echo $cell[$i][1][1] ?></td> <td><?php $cell[$i][1][2] = intval(-sin(deg2rad($match[1]))); echo $cell[$i][1][2] ?></td> <td><?php $cell[$i][1][3] = 0; echo $cell[$i][1][3] ?></td> </tr> <tr> <td><?php $cell[$i][2][0] = 0; echo $cell[$i][2][0] ?></td> <td><?php $cell[$i][2][1] = intval(sin(deg2rad($match[1]))); echo $cell[$i][2][1] ?></td> <td><?php $cell[$i][2][2] = intval(cos(deg2rad($match[1]))); echo $cell[$i][2][2] ?></td> <td><?php $cell[$i][2][3] = 0; echo $cell[$i][2][3] ?></td> </tr> <tr> <td><?php $cell[$i][3][0] = 0; echo $cell[$i][3][0] ?></td> <td><?php $cell[$i][3][1] = 0; echo $cell[$i][3][1] ?></td> <td><?php $cell[$i][3][2] = 0; echo $cell[$i][3][2] ?></td> <td><?php $cell[$i][3][3] = 1; echo $cell[$i][3][3] ?></td> </tr> </table> <?php } else if (strcmp(substr($transbits[$i],3,1),"y")==0){ ?> <table width="50" border="5" align="left" cellpadding="5"> <tr> <td><?php $cell[$i][0][0] = intval(cos(deg2rad($match[1]))); echo $cell[$i][0][0] ?></td> <td><?php $cell[$i][0][1] = 0; echo $cell[$i][0][1] ?></td> <td><?php $cell[$i][0][2] = intval(sin(deg2rad($match[1]))); echo $cell[$i][0][2] ?></td> <td><?php $cell[$i][0][3] = 0; echo $cell[$i][0][3] ?></td> </tr> <tr> <td><?php $cell[$i][1][0] = 0; echo $cell[$i][1][0] ?></td> <td><?php $cell[$i][1][1] = 1; echo $cell[$i][1][1] ?></td> <td><?php $cell[$i][1][2] = 0; echo $cell[$i][1][2] ?></td> <td><?php $cell[$i][1][3] = 0; echo $cell[$i][1][3] ?></td> </tr> <tr> <td><?php $cell[$i][2][0] = intval(-sin(deg2rad($match[1]))); echo $cell[$i][2][0] ?></td> <td><?php $cell[$i][2][1] = 0; echo $cell[$i][2][1] ?></td> <td><?php $cell[$i][2][2] = intval(cos(deg2rad($match[1]))); echo $cell[$i][2][2] ?></td> <td><?php $cell[$i][2][3] = 0; echo $cell[$i][2][3] ?></td> </tr> <tr> <td><?php $cell[$i][3][0] = 0; echo $cell[$i][3][0] ?></td> <td><?php $cell[$i][3][1] = 0; echo $cell[$i][3][1] ?></td> <td><?php $cell[$i][3][2] = 0; echo $cell[$i][3][2] ?></td> <td><?php $cell[$i][3][3] = 1; echo $cell[$i][3][3] ?></td> </tr> </table> <?php } else if (strcmp(substr($transbits[$i],3,1),"z")==0){ ?> <table width="50" border="5" align="left" cellpadding="5"> <tr> <td><?php $cell[$i][0][0] = intval(cos(deg2rad($match[1]))); echo $cell[$i][0][0] ?></td> <td><?php $cell[$i][0][1] = intval(-sin(deg2rad($match[1]))); echo $cell[$i][0][1] ?></td> <td><?php $cell[$i][0][2] = 0; echo $cell[$i][0][2] ?></td> <td><?php $cell[$i][0][3] = 0; echo $cell[$i][0][3] ?></td> </tr> <tr> <td><?php $cell[$i][1][0] = intval(sin(deg2rad($match[1]))); echo $cell[$i][1][0] ?></td> <td><?php $cell[$i][1][1] = intval(cos(deg2rad($match[1]))); echo $cell[$i][1][1] ?></td> <td><?php $cell[$i][1][2] = 0; echo $cell[$i][1][2] ?></td> <td><?php $cell[$i][1][3] = 0; echo $cell[$i][1][3] ?></td> </tr> <tr> <td><?php $cell[$i][2][0] = 0; echo $cell[$i][2][0] ?></td> <td><?php $cell[$i][2][1] = 0; echo $cell[$i][2][1] ?></td> <td><?php $cell[$i][2][2] = 1; echo $cell[$i][2][2] ?></td> <td><?php $cell[$i][2][3] = 0; echo $cell[$i][2][3] ?></td> </tr> <tr> <td><?php $cell[$i][3][0] = 0; echo $cell[$i][3][0] ?></td> <td><?php $cell[$i][3][1] = 0; echo $cell[$i][3][1] ?></td> <td><?php $cell[$i][3][2] = 0; echo $cell[$i][3][2] ?></td> <td><?php $cell[$i][3][3] = 1; echo $cell[$i][3][3] ?></td> </tr> </table> <?php } } } ?> <?php for($i=0; $i<count($transbits);$i++){ echo "<br/><br/><br/><br/><br/><br/><br/><br/><br/>"; for($row = 0; $row < 4; $row++){ for($column = 0; $column < 4; $column++){ $sum = 0; for($ctr = 0; $ctr < 4; $ctr++){ $sum = $sum + ($cell[$i][$row][$ctr] * $cell[$i+1][$ctr][$column]); } $cell[$i][$row][$column] = $sum; } } ?> <table width="50" border="5" align = "left" cellpadding="5"> <tr> <td><?php echo $cell[$i][0][0] ?></td> <td><?php echo $cell[$i][0][1] ?></td> <td><?php echo $cell[$i][0][2] ?></td> <td><?php echo $cell[$i][0][3] ?></td> </tr> <tr> <td><?php echo $cell[$i][1][0] ?></td> <td><?php echo $cell[$i][1][1] ?></td> <td><?php echo $cell[$i][1][2] ?></td> <td><?php echo $cell[$i][1][3] ?></td> </tr> <tr> <td><?php echo $cell[$i][2][0] ?></td> <td><?php echo $cell[$i][2][1] ?></td> <td><?php echo $cell[$i][2][2] ?></td> <td><?php echo $cell[$i][2][3] ?></td> </tr> <tr> <td><?php echo $cell[$i][3][0] ?></td> <td><?php echo $cell[$i][3][1] ?></td> <td><?php echo $cell[$i][3][2] ?></td> <td><?php echo $cell[$i][3][3] ?></td> </tr> </table> <?php for($j=$i+2; $j<(count($transbits));$j++){ ?> <table width="50" border="5" align = "left" cellpadding="5"> <tr> <td><?php echo $cell[$j][0][0] ?></td> <td><?php echo $cell[$j][0][1] ?></td> <td><?php echo $cell[$j][0][2] ?></td> <td><?php echo $cell[$j][0][3] ?></td> </tr> <tr> <td><?php echo $cell[$j][1][0] ?></td> <td><?php echo $cell[$j][1][1] ?></td> <td><?php echo $cell[$j][1][2] ?></td> <td><?php echo $cell[$j][1][3] ?></td> </tr> <tr> <td><?php echo $cell[$j][2][0] ?></td> <td><?php echo $cell[$j][2][1] ?></td> <td><?php echo $cell[$j][2][2] ?></td> <td><?php echo $cell[$j][2][3] ?></td> </tr> <tr> <td><?php echo $cell[$j][3][0] ?></td> <td><?php echo $cell[$j][3][1] ?></td> <td><?php echo $cell[$j][3][2] ?></td> <td><?php echo $cell[$j][3][3] ?></td> </tr> </table> <?php } } ?> </body> </html>
  2. kaitokid41
    THANKS! So that's why it gives the wrong solution. I multiplied it in the with the wrong row/column! THANK YOU SO MUCH!!! Sure, cuz I need help for something more than just this. Hehe. Here's my code. After that multiplication, I should copy the succeeding 4 matrices and place it beside my solution. Then I multiply the first 2 again, until one matrix is left. Any idea how will I do it? By the way, here's the 'string': ...THANKS! <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Matrix Solver</title> </head> <body> <?php $transformation = $_POST['string']; $transbits = explode(";",$transformation); for($i=0; $i<count($transbits);$i++){ if(strcmp(substr($transbits[$i],0,5),"trans")==0){ preg_match('#\((.*?)\)#', $transbits[$i], $match); $extrans = explode(",",$match[1]); ?> <table width="50" border="5" align="left" cellpadding="5"> <tr> <td><?php $cell[$i][0][0] = 1; echo $cell[$i][0][0] ?></td> <td><?php $cell[$i][0][1] = 0; echo $cell[$i][0][1] ?></td> <td><?php $cell[$i][0][2] = 0; echo $cell[$i][0][2] ?></td> <td><?php $cell[$i][0][3] = $extrans[0]; echo $cell[$i][0][3] ?></td> </tr> <tr> <td><?php $cell[$i][1][0] = 0; echo $cell[$i][1][0] ?></td> <td><?php $cell[$i][1][1] = 1; echo $cell[$i][1][1] ?></td> <td><?php $cell[$i][1][2] = 0; echo $cell[$i][1][2] ?></td> <td><?php $cell[$i][1][3] = $extrans[1]; echo $cell[$i][1][3] ?></td> </tr> <tr> <td><?php $cell[$i][2][0] = 0; echo $cell[$i][2][0] ?></td> <td><?php $cell[$i][2][1] = 0; echo $cell[$i][2][1] ?></td> <td><?php $cell[$i][2][2] = 1; echo $cell[$i][2][2] ?></td> <td><?php $cell[$i][2][3] = $extrans[2]; echo $cell[$i][2][3] ?></td> </tr> <tr> <td><?php $cell[$i][3][0] = 0; echo $cell[$i][3][0] ?></td> <td><?php $cell[$i][3][1] = 0; echo $cell[$i][3][1] ?></td> <td><?php $cell[$i][3][2] = 0; echo $cell[$i][3][2] ?></td> <td><?php $cell[$i][3][3] = 1; echo $cell[$i][3][3] ?></td> </tr> </table> <?php } else if(strcmp(substr($transbits[$i],0,3),"rot")==0){ preg_match('#\((.*?)\)#', $transbits[$i], $match); //echo "$match[1] <br/>"; if (strcmp(substr($transbits[$i],3,1),"x")==0){ ?> <table width="50" border="5" align="left" cellpadding="5"> <tr> <td><?php $cell[$i][0][0] = 1; echo $cell[$i][0][0] ?></td> <td><?php $cell[$i][0][1] = 0; echo $cell[$i][0][1] ?></td> <td><?php $cell[$i][0][2] = 0; echo $cell[$i][0][2] ?></td> <td><?php $cell[$i][0][3] = 0; echo $cell[$i][0][3] ?></td> </tr> <tr> <td><?php $cell[$i][1][0] = 0; echo $cell[$i][1][0] ?></td> <td><?php $cell[$i][1][1] = intval(cos(deg2rad($match[1]))); echo $cell[$i][1][1] ?></td> <td><?php $cell[$i][1][2] = intval(-sin(deg2rad($match[1]))); echo $cell[$i][1][2] ?></td> <td><?php $cell[$i][1][3] = 0; echo $cell[$i][1][3] ?></td> </tr> <tr> <td><?php $cell[$i][2][0] = 0; echo $cell[$i][2][0] ?></td> <td><?php $cell[$i][2][1] = intval(sin(deg2rad($match[1]))); echo $cell[$i][2][1] ?></td> <td><?php $cell[$i][2][2] = intval(cos(deg2rad($match[1]))); echo $cell[$i][2][2] ?></td> <td><?php $cell[$i][2][3] = 0; echo $cell[$i][2][3] ?></td> </tr> <tr> <td><?php $cell[$i][3][0] = 0; echo $cell[$i][3][0] ?></td> <td><?php $cell[$i][3][1] = 0; echo $cell[$i][3][1] ?></td> <td><?php $cell[$i][3][2] = 0; echo $cell[$i][3][2] ?></td> <td><?php $cell[$i][3][3] = 1; echo $cell[$i][3][3] ?></td> </tr> </table> <?php } else if (strcmp(substr($transbits[$i],3,1),"y")==0){ ?> <table width="50" border="5" align="left" cellpadding="5"> <tr> <td><?php $cell[$i][0][0] = intval(cos(deg2rad($match[1]))); echo $cell[$i][0][0] ?></td> <td><?php $cell[$i][0][1] = 0; echo $cell[$i][0][1] ?></td> <td><?php $cell[$i][0][2] = intval(sin(deg2rad($match[1]))); echo $cell[$i][0][2] ?></td> <td><?php $cell[$i][0][3] = 0; echo $cell[$i][0][3] ?></td> </tr> <tr> <td><?php $cell[$i][1][0] = 0; echo $cell[$i][1][0] ?></td> <td><?php $cell[$i][1][1] = 1; echo $cell[$i][1][1] ?></td> <td><?php $cell[$i][1][2] = 0; echo $cell[$i][1][2] ?></td> <td><?php $cell[$i][1][3] = 0; echo $cell[$i][1][3] ?></td> </tr> <tr> <td><?php $cell[$i][2][0] = intval(-sin(deg2rad($match[1]))); echo $cell[$i][2][0] ?></td> <td><?php $cell[$i][2][1] = 0; echo $cell[$i][2][1] ?></td> <td><?php $cell[$i][2][2] = intval(cos(deg2rad($match[1]))); echo $cell[$i][2][2] ?></td> <td><?php $cell[$i][2][3] = 0; echo $cell[$i][2][3] ?></td> </tr> <tr> <td><?php $cell[$i][3][0] = 0; echo $cell[$i][3][0] ?></td> <td><?php $cell[$i][3][1] = 0; echo $cell[$i][3][1] ?></td> <td><?php $cell[$i][3][2] = 0; echo $cell[$i][3][2] ?></td> <td><?php $cell[$i][3][3] = 1; echo $cell[$i][3][3] ?></td> </tr> </table> <?php } else if (strcmp(substr($transbits[$i],3,1),"z")==0){ ?> <table width="50" border="5" align="left" cellpadding="5"> <tr> <td><?php $cell[$i][0][0] = intval(cos(deg2rad($match[1]))); echo $cell[$i][0][0] ?></td> <td><?php $cell[$i][0][1] = intval(-sin(deg2rad($match[1]))); echo $cell[$i][0][1] ?></td> <td><?php $cell[$i][0][2] = 0; echo $cell[$i][0][2] ?></td> <td><?php $cell[$i][0][3] = 0; echo $cell[$i][0][3] ?></td> </tr> <tr> <td><?php $cell[$i][1][0] = intval(sin(deg2rad($match[1]))); echo $cell[$i][1][0] ?></td> <td><?php $cell[$i][1][1] = intval(cos(deg2rad($match[1]))); echo $cell[$i][1][1] ?></td> <td><?php $cell[$i][1][2] = 0; echo $cell[$i][1][2] ?></td> <td><?php $cell[$i][1][3] = 0; echo $cell[$i][1][3] ?></td> </tr> <tr> <td><?php $cell[$i][2][0] = 0; echo $cell[$i][2][0] ?></td> <td><?php $cell[$i][2][1] = 0; echo $cell[$i][2][1] ?></td> <td><?php $cell[$i][2][2] = 1; echo $cell[$i][2][2] ?></td> <td><?php $cell[$i][2][3] = 0; echo $cell[$i][2][3] ?></td> </tr> <tr> <td><?php $cell[$i][3][0] = 0; echo $cell[$i][3][0] ?></td> <td><?php $cell[$i][3][1] = 0; echo $cell[$i][3][1] ?></td> <td><?php $cell[$i][3][2] = 0; echo $cell[$i][3][2] ?></td> <td><?php $cell[$i][3][3] = 1; echo $cell[$i][3][3] ?></td> </tr> </table> <?php } } } ?> <?php echo "<br/><br/><br/><br/><br/><br/><br/><br/><br/>"; $i=0; for($row = 0; $row < 4; $row++){ for($column = 0; $column < 4; $column++){ $sum = 0; for($ctr = 0; $ctr < 4; $ctr++){ $sum = $sum + ($cell[$i][$row][$ctr] * $cell[$i+1][$ctr][$column]); } $sol[$i][$row][$column] = $sum; } } ?> <table width="50" border="5" align = "left" cellpadding="5"> <tr> <td><?php echo $sol[$i][0][0] ?></td> <td><?php echo $sol[$i][0][1] ?></td> <td><?php echo $sol[$i][0][2] ?></td> <td><?php echo $sol[$i][0][3] ?></td> </tr> <tr> <td><?php echo $sol[$i][1][0] ?></td> <td><?php echo $sol[$i][1][1] ?></td> <td><?php echo $sol[$i][1][2] ?></td> <td><?php echo $sol[$i][1][3] ?></td> </tr> <tr> <td><?php echo $sol[$i][2][0] ?></td> <td><?php echo $sol[$i][2][1] ?></td> <td><?php echo $sol[$i][2][2] ?></td> <td><?php echo $sol[$i][2][3] ?></td> </tr> <tr> <td><?php echo $sol[$i][3][0] ?></td> <td><?php echo $sol[$i][3][1] ?></td> <td><?php echo $sol[$i][3][2] ?></td> <td><?php echo $sol[$i][3][3] ?></td> </tr> </table> </body> </html>
  3. kaitokid41
    Good day, guys... it seems I'm messing up my algorithm to multiply two(2) 4x4 Matrix and put it in a table. Can somebody point out what's wrong with my code? THANKS IN ADVANCE!!! Here's the situation. I'm getting values from two(2) 4x4 tables, multiply them, and store them in another table. Here's the "math" part of my code: <?php echo "<br/><br/><br/><br/><br/><br/><br/><br/><br/>"; $i=0; for($row = 0; $row < 4; $row++){ for($column = 0; $column < 4; $column++){ $sum = 0; for($ctr = 0; $ctr < 4; $ctr++){ $sum = $sum + ($cell[$i][$row][$ctr] * $cell[$i+1][$ctr][$row]); } $sol[$i][$row][$column] = $sum; } } ?> <table width="50" border="5" align = "left" cellpadding="5"> <tr> <td><?php echo $sol[$i][0][0] ?></td> <td><?php echo $sol[$i][0][1] ?></td> <td><?php echo $sol[$i][0][2] ?></td> <td><?php echo $sol[$i][0][3] ?></td> </tr> <tr> <td><?php echo $sol[$i][1][0] ?></td> <td><?php echo $sol[$i][1][1] ?></td> <td><?php echo $sol[$i][1][2] ?></td> <td><?php echo $sol[$i][1][3] ?></td> </tr> <tr> <td><?php echo $sol[$i][2][0] ?></td> <td><?php echo $sol[$i][2][1] ?></td> <td><?php echo $sol[$i][2][2] ?></td> <td><?php echo $sol[$i][2][3] ?></td> </tr> <tr> <td><?php echo $sol[$i][3][0] ?></td> <td><?php echo $sol[$i][3][1] ?></td> <td><?php echo $sol[$i][3][2] ?></td> <td><?php echo $sol[$i][3][3] ?></td> </tr> </table>
  4. kaitokid41
    wow! works like charm! hahaha! thank you very much! sorry im kinda noob when it comes to php. im still just learning the beautiful language. thanks again!
  5. kaitokid41
    I have this main program calculating the hamming code of an 8-bit value (assuming all inputs are 1's and 0's) but i'm stuck in outputting its check bits... <head> <title>Hamming Code Calculator</title> </head> <body bgcolor="white"> <form action="getvalues.php" method="get"> <table width="800" border="1" STYLE="background-color:#CF3"> <tr> <td><input type="text" name="d8" size=1></td> <td><input type="text" name="d7" size=1></td> <td><input type="text" name="d6" size=1></td> <td><input type="text" name="d5" size=1></td> <td><input type="text" name="d4" size=1></td> <td><input type="text" name="d3" size=1></td> <td><input type="text" name="d2" size=1></td> <td><input type="text" name="d1" size=1></td> </tr> </table> <input type="submit" value="Calculate"> </form> </body> </html> and the file to be accessed is this... </head> <body> <?php $d1=$_GET["d1"]; $d2=$_GET["d2"]; $d3=$_GET["d3"]; $d4=$_GET["d4"]; $d5=$_GET["d5"]; $d6=$_GET["d6"]; $d7=$_GET["d7"]; $d8=$_GET["d8"]; $c1 = $d1 ^ $d2 ^ $d4 ^ $d5 ^ $d7; $c2 = $d1 ^ $d3 ^ $d4 ^ $d6 ^ $d7; $c4 = $d2 ^ $d3 ^ $d4 ^ $d8; $c8 = $d5 ^ $d6 ^ $d7 ^ $d8; ?> <table width="400" border="2" height="100"> <tr> <td><?php echo "_"; ?></td> <td><?php echo $d7; ?></td> <td><?php echo "_"; ?></td> <td><?php echo $d5; ?></td> <td><?php echo "_"; ?></td> <td><?php echo $d4; ?></td> <td><?php echo "_"; ?></td> <td><?php echo $d2; ?></td> <td><?php echo "_"; ?></td> <td><?php echo $d1; ?></td> <td><?php echo "_"; ?></td> <td><?php echo "_"; ?></td> </tr> <tr> <td><?php echo "_"; ?></td> <td><?php echo $d7; ?></td> <td><?php echo $d6; ?></td> <td><?php echo "_"; ?></td> <td><?php echo "_"; ?></td> <td><?php echo $d4; ?></td> <td><?php echo $d3; ?></td> <td><?php echo "_"; ?></td> <td><?php echo " "; ?></td> <td><?php echo $d1; ?></td> <td><?php echo "_"; ?></td> <td><?php echo "_"; ?></td> </tr> <tr> <td><?php echo $d8; ?></td> <td><?php echo "_"; ?></td> <td><?php echo "_"; ?></td> <td><?php echo "_"; ?></td> <td><?php echo "_"; ?></td> <td><?php echo $d4; ?></td> <td><?php echo $d3; ?></td> <td><?php echo $d2; ?></td> <td><?php echo "_"; ?></td> <td><?php echo "_"; ?></td> <td><?php echo "_"; ?></td> <td><?php echo "_"; ?></td> </tr> <tr> <td><?php echo $d8; ?></td> <td><?php echo $d7; ?></td> <td><?php echo $d6; ?></td> <td><?php echo $d5; ?></td> <td><?php echo "_"; ?></td> <td><?php echo "_"; ?></td> <td><?php echo "_"; ?></td> <td><?php echo "_"; ?></td> <td><?php echo "_"; ?></td> <td><?php echo "_"; ?></td> <td><?php echo "_"; ?></td> <td><?php echo "_"; ?></td> </tr> </table> <?php echo $c1; echo $c2; echo $c4; echo $c8; ?> </body> </html> ...and for some reason, i can't see the output of $c4 and $c8. is there anything wrong with my code? advance thank you for those who'll help!
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