No result on table - php

Question

I like to retrieve a mysql result and assign to a variable ($status)
and depending on the result I want to put an ok or a ko (in this case if $status are "Active" the result is an "ok)
Seems that the problem are when show the result into the td but can't see something else.
 
Anybody can help?
if(mysqli_num_rows($result) > 0)
{
$number = 1;
while($row = mysqli_fetch_assoc($result))
{
$status = strtolower($row['register_status']);
$data .= '<tr>
<td>'.$row['id'].'</td>
<td>'.$row['first_name'].'</td>
<td>'.$row['last_name'].'</td>
<td>'.$row['email'].'</td>
<td>'
if ($status == "Active") {
echo "OK";
}
else {
echo "KO";
}
'</td>
<td width="1%">
<div class="dropdown">
<button class="btn btn-default dropdown-toggle" type="button" data-toggle="dropdown">Actions
<span class="caret"></span></button>
<ul class="dropdown-menu">
<li onclick="GetUserDetails('.$row['id'].')">Update</li>
<li onclick="DeleteUser('.$row['id'].')">Delete</li>
</ul>
</div>
</td>
</tr>';```
The idea is change in the future the echo for an image or a div content

Answer 1

Instead of using echo, which will output "OK" or "KO" before the rest of your HTML, try determining whether you need "OK"/"KO" before you create your HTML.
You could also add an image or div or whatever you want instead of "OK" or "KO".
Then just concatenate this $value to your string like you are doing with the rest of your td's
if(mysqli_num_rows($result) > 0)
{
$number = 1;
while($row = mysqli_fetch_assoc($result))
{
$status = strtolower($row['register_status']);
if ($status == "active") {
$value = "<div>Other Content</div>";
}
else {
$value = "<img src='http://example.com/img.jpg'>";
}
$data .= '<tr>
<td>'.$row['id'].'</td>
<td>'.$row['first_name'].'</td>
<td>'.$row['last_name'].'</td>
<td>'.$row['email'].'</td>
<td>'.$value.'</td>
<td width="1%">
<div class="dropdown">
<button class="btn btn-default dropdown-toggle" type="button" data-toggle="dropdown">Actions
<span class="caret"></span></button>
<ul class="dropdown-menu">
<li onclick="GetUserDetails('.$row['id'].')">Update</li>
<li onclick="DeleteUser('.$row['id'].')">Delete</li>
</ul>
</div>
</td>
</tr>';

Answer 2

First thing ,You are converting the status into the lower case and try to compare with "Active". It always gives you the incorrect answer every-time.
Rather than using the echo, you can first take the value of the status into one variable and than try to set under the table. It will work for you.
if ($status == "active") {
$status = "OK";
}
else {
$status = "KO";
}
$data .= '<tr>
<td>'.$row['id'].'</td>
<td>'.$row['first_name'].'</td>
<td>'.$row['last_name'].'</td>
<td>'.$row['email'].'</td>
<td>'.$status.'</td>
<td width="1%">
<div class="dropdown">
<button class="btn btn-default dropdown-toggle" type="button" data-toggle="dropdown">Actions
<span class="caret"></span></button>
<ul class="dropdown-menu">
<li onclick="GetUserDetails('.$row['id'].')">Update</li>
<li onclick="DeleteUser('.$row['id'].')">Delete</li>
</ul>
</div>
</td>
</tr>';