PHP how to multiple rows of form via checkboxes - php

Question

My current form includes many rows (100s) each with several values the user can choose and they click submit for each. I would like instead to give them the option to submit multiple rows at a time by using a checkbox with one submit button.
My current code is:
<tr>
<form id='form$y' action=".htmlspecialchars($_SERVER["PHP_SELF"])." method='post''/>
<input type='hidden' form='form$y' name='id' value='$id' />
<td>
<input style='height:18px' form='form$y' type='date' name='date value='$date'/>
</td>
<td>
<select name='status' form='form$y' required/>
<option>$status</option>
<option value='option1'>option1</option>
<option value='option2'>option2</option>
</select>
</td>
<td>
<input form='form$y' type='text' name='comment' value='$comment'/>
</td>
<td>
<input type='submit' value='Save' />
</form>
</td>
</tr>";
As you can see, each row is its own form. I imagine I should be using only one total form if I'm employing check-boxes instead of individual submits? Where do I go from here? Where doe the submit button belong?
I suppose I should replace the submit column with something like this:
<td>
<input type='checkbox' name='check_list[]' value='value$y'>
</td>
I'd appreciate if someone can give me an example (based on my code) of how this should work. I did read what is already there on SO but I couldn't quite get anything to work.

Answer 1

Use one form -
HTML
<form method="post">
<tr>
<input type='hidden' name='id[]' value='$id' />
<td><input type='checkbox' name='check_list[]' value='value$y'></td>
<td>
<input style='height:18px' ftype='date' name='date[]' value='$date'/>
</td>
<td>
<select name='status[]' required/>
<option>$status</option>
<option value='option1'>option1</option>
<option value='option2'>option2</option>
</select>
</td>
<td>
<input type='text' name='comment[]' value='$comment'/>
</td>
</tr>
<tr>.......</tr>
</form>
PHP
if(!empty($_POST)) {
if(count($_POST['check_list']) > 0 && !empty($_POST['check_list'][0])) {
foreach($_POST['check_list'] as $key => $checked) {
$id = $_POST['id'][$key];
// rest of the data and processings
}
}
}

Answer 2

Keep the Submit Button with the form
In PHP
if(!empty($_POST['check_list'])){
// $_POST[check_list] will be an array with selected values only.
// Do whatever you want do with the $_POST[check_list] array.
}