post pre checked checkbox on form submit PHP MYSQL - php

Question

how can i submit a pre checked checkbox on submit?
right now i have
$checked= 'checked="checked"';
<input type="checkbox" name="entity_id['.$row['entity_id'].']" value="Yes" '.$checked.'>
on submit, this is not getting posted, only when checked/unchecked by hand.
my $checked is actually coming from a for-each mysql query.
any help is appreciated.
UPDATE
<form method="post">';
if($hass_lights == 'Yes'){$user->getLights($userid);}
exit('
<br><b>Google is requiring access to your basic profile information.</b><br><br>
<input type="submit" class="btn btn-text" style="height:40px; width:100px" name="authorized" value="Allow" /> <input type="submit" class="btn btn-text" style="height:40px; width:100px" name="authorized" value="Deny" />
</form>
');
function getLights($userID){
$stmt = $this->db->prepare("SELECT * FROM hass_entities WHERE id = :id AND devicetype= 'light' ORDER BY friendly_name ASC");
$stmt->bindParam(':id',$userID);
$stmt->execute();
$userData = $stmt->fetchAll();
echo '
<div class="container">
<button type="button" class="btn btn-info" data-toggle="collapse" style="width:120px" data-target="#lights">Lights</button>
<br/><div id="lights" class="collapse"><br/><table border=0>';
foreach( $userData as $row ) {
if($row['enabled'] == 'Yes'){
$checked = 'checked="checked"';
}else{
$checked = '';
}
echo '<tr><td><label id="'.$row['entity_id'].'">'.$row['friendly_name'].' </label></td><td><input type="checkbox" name="entity_id['.$row['entity_id'].']" value="Yes" '.$checked.'></td></tr>';
}
echo '</table></div></div><br/>';
}
-Dennis

Answer 1

Try this:
<input type="checkbox" name="entity_id['.$row['entity_id'].']" value="Yes" checked>

Answer 2

Your input field is been written in an echo statement? Would be good to see the entire form, but here is your code working:
<form method=POST>
<?php
var_dump($_POST);
$row = [];
$row['entity_id'] = 1;
$checked= 'checked="checked"';
echo '<input type="checkbox" name="entity_id['.$row['entity_id'].']" value="Yes" '.$checked.'>';
?>
<button type="submit">submit</button>
</form>