PHP Number grid puzzler!

[Mutley]

Hi guys, having a problem with my script. Feel free to upload it to understand, below is the full file.

 

The problem: I want numbers on the grid to be unique but move X / Y like they do now, by 1 row and column at a time. At the moment, it has the same number repeated on each row, what I would like it to do, is start from -15 for example at the top left, then count upto 15 to the bottom right.

 

<style type="text/css">

td{

border:1px solid #000;

padding:10px;

}

.navigation td{

text-align:center;

}

</style>

 

<?php

$x = $_GET['x']; // Horizontal

$y = $_GET['y']; // Vertical

$x_limit = 15; // Horizontal Navigation Limit

$y_limit = 15; // Vertiacal Navigation Limit

 

if($x > $x_limit || $y > $y_limit || $x < -$x_limit || $y < -$y_limit){

$x = 0;

$y = 0;

}

 

$n=($x-($y*10)); // Cell ID (Number)

 

$h=array('20', '52', '123', '155', '104'); // Numbers to Highlight

 

echo '<table style="border:1px">';

$r=0; // Row

while($r<10){

$c=0; // Column

 

echo '<tr>';

while($c<10){

if(in_array($n, $h)){ echo '<td style="background:#CCC">';}else{ echo '<td>';} echo $n++.'</td>';

$c++; // Next Column

}

echo '</tr>';

$r++; // Next Row

}

echo '</table>';

?>

 

<br /><br />

<table class="navigation">

<tr>

<td> </td><td><?php if($y<$y_limit){ echo '<a href="?x='.$x.'&y='.($y+1).'">Up</a><br />';}?></td><td> </td>

</tr><tr>

<td><?php if($x>-$x_limit){ echo '<a href="?x='.($x-1).'&y='.$y.'">Left</a><br />';}?></td>

<td><?php echo '<a href="?x=0&y=0">Reset</a><br />';?></td>

<td><?php if($x<$x_limit){ echo '<a href="?x='.($x+1).'&y='.$y.'">Right</a><br />';}?></td>

</tr><tr>

<td> </td><td><?php if($y>-$y_limit){ echo '<a href="?x='.$x.'&y='.($y-1).'">Down</a><br />';}?></td><td> </td>

</tr>

</table>

 

 

Hope you guys understand! Thanks in advance.

[Mutley]

I'll try to explain, as I've had no replies.

 

At the moment, it does this:

 

0,1,2,3,4,5,6,7,8,9,10

11,12,13,14,15,16,17,18,19,20

21,22,23,24,25,26,27,28,29,30

 

Which would be fine... if that was the limits of the square but instead, it goes much further, so you get numbers repeating themselves:

 

0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20

11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30

21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40

 

What I would like it to do is make each number unique and in a FIXED position, so when you navigate around, it stays at that location but doesn't end up duplicating later on.

 

Thanks in advance.