How can I generate HTML table with PHP - php

Question

Created a script that generates a table with 10 rows and 2 cols.
I can't make the cells generate natural numbers nonzero, and divisible by 5 distributed as the following table:
This is my code:
<?php
$rows = 10;
$cols = 2;
echo "<table border='1'>";
for($tr=1;$tr<=$rows;$tr++){
echo "<tr>";
for($td=1;$td<=$cols;$td++){
//generated cols and rows, now the calculus
if ($tr/5!=0) {
echo "<td>".($tr*5)."</td>";
} else {
echo "<td>".($tr*5)."</td>";
}
}
echo "</tr>";
}
echo "</table>";
?>
Where did I go wrong, how can I make it go from row to row like the image ?

Answer 1

You are making it more complicated than needed. Just add 5 to a counter each cell
Is this what you want?
$rows = 10;
$cols = 2;
echo "<table border='1'>";
$val=0;
for($tr=1;$tr<=$rows;$tr++){
echo "<tr>";
for($td=1;$td<=$cols;$td++){
$val=$val+5;
echo "<td>".$val."</td>";
}
echo "</tr>";
}
echo "</table>";