Basic function in PHP - help!!!

Hi,

I'm a bit of a newb and have just started studying PHP. I have a simple task to do but just can't find the info I need.

The task is:

Write a function grid ($x, $y) which prints out <table> in with size $x rows by $y columns with a unique number printed in every cell.


Pleeease help!!!

Thanks.

 

You have a number of ways you can do this. It will be a nested loop that you need.

while, for..

Personally I would do a nested for loop. Print one table row then print the next table row.

function grid ($numx, $numy){
$var = 0;
echo '<table>';
for($y=0;$y <= $numy; $y++;)
{
  echo "<tr>";
  for($x=0;$x <= $numx; $x++;) 
  {
    $var++;
    echo "<td>$var</td>";
  }
  echo "</tr>";
}
echo '</table>';
}

PHP:

 

Exodus,

thanks very much for your help. I added a couple of things to make a border around each cell and also to try and set the size of the grid at two columns and three rows.

<?php

function grid ($numx, $numy){
$var = 0;

echo '<table border="1">';

for($y=0;$y <= $numy; $y++)
{

echo "<tr>";

for($x=0;$x <= $numx; $x++)
{
$var++; echo "<td>$var</td>";

}
echo "</tr>";
}

echo '</table>';


}

grid(3,2);
?>



However, the print out gives me 3 rows and four columns. Can you explain why this is, please?

Thanks again.

 

doh.. $x=0, $y=0.. Change those to $x=1, $y=1

The basic idea is there though. Play around with it to figure out what a for loop does.

 

Spot on, thanks so much.