SQL DB count entries and put variable

Hello
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I want to count certain entries from the database and deactivate input fields based on the output.
The "input" tag is not the problem. But I don´t know where I have to put the sql code (incomplete)!?

$sql = "SELECT COUNT(row) FROM db WHERE xy='yx'";

if ($result = mysqli_query($db, $sql)) {
    $row = mysqli_fetch_row($result);
    $count = $row[0];

<input type="radio" id="id" name="name" value="value" <?php if($count >= $int){ echo "disabled";} ?> >

did you manage to solve this ?

Yes!
Action -> Read Data -> Query Fields -> COUNT(radio name) and WHERE command
then
HTML with php: ... $count1 = $this->get("field alias from read data"); ...
​
For me the best solution