Every 8th instance go to new tr - php

Question

I am building a calender in PHP.
In the controller, I have detected the amount of days in a given month, and set that range into an array: daysInMonthArray.
In the view, I then foreach this array outputting each number into a <td>:
<tr>
<?php
// output the number of days in the month
foreach($this->daysInMonthArray as $days1){
foreach($days1 as $key => $object){
echo "<td>" . $object . "</td>";
}
} ?>
</tr>
I would like to start a new <tr> every 8th number, as there are 7 days in a week and need to start a new row to begin a new week.
I have tried enclosing an if statement that detected the remainder of the output if divided by 8. if the output was 0 then new line, if not then carry on. However, this didnt work because the <tr> tags are outside the php statement.
Following answers and comments I have updated my code to:
<tr>
<?php
// output the number of days in the month
foreach($this->daysInMonthArray as $days1){
foreach($days1 as $key => $object){
if($object % 8 == 0){
echo "</tr><tr><td>" . $object . "</td>";
}else {
echo "<td>" . $object . "</td>";
}
}
} ?>
</tr>
This very nearly works, except for the middle two weeks in a month. It puts 8 days in the middle 2 weeks but 7 on the first and last week.

Answer 1

You've pretty much answered this one yourself with the following:
this didnt work because the tags are outside the php statement
You have to get the <tr> tags inside the loop.
<?php
$daysInRow = 0;
// output the number of days in the month
foreach($this->daysInMonthArray as $days1)
{
foreach($days1 as $key => $object)
{
if($daysInRow % 7 === 0)
{
echo '<tr>';
}
echo "<td>" . $object . "</td>";
if($daysInRow % 7 === 0)
{
echo '</tr>';
}
if($daysInRow % 7 === 0)
{
$daysInRow = 0;
}
else
{
$daysInRow++;
}
}
}
?>
This is untested code and could be more concise but hopefully you get the idea.

Answer 2

One prob that you're gonna run into is that you're nesting your table in an existing table. Try:
<tr><td>
<?php
// output the number of days in the month
foreach($this->daysInMonthArray as $days1){
echo "<table>";
$dayofweek = 0;
foreach($days1 as $key => $object){
if($dayofweek%7 == 0)
echo "<tr>";
echo "<td>" . $object . "</td>";
if($dayofweek%7 == 0)
echo "</tr>";
$dayofweek++;
}
if($dayofweek%7 != 0) //last tr
echo "</tr>";
echo "</table>";
}
?>
</td></tr>