Hide empty fields in email

Hi, i used code which i find on this forum for remove empty fields in email :
​

<?php if(!empty($form->data["field_name"])): ?>{field_name}<?php endif; ?>

​
My template is - example : ( i change it on tab Pages and nex tab Template : https://prnt.sc/qy5eh1 )

<?php if(!empty($form->data["titul"])): ?>
 <tr>
 <td width="100%">
 <table width="100%" cellpadding="0" cellspacing="0" border="0">
 <tr style="background-color:#fafafb">
 <td style="padding:7px;"><strong>Titul</strong></td>
 </tr>
 <tr>
 <td style="padding:7px;">{data:titul}</td>
 </tr>
 </table>
 </td>
 </tr>
 <?php endif; ?>

​
But when this filed is not empty i dont see it in email too. Can you help me fix it please ? thanks

$this->data('field_name') not $form->data['fieldname']

Thanks .
​
I have one next question .
​
i have in template if conditionals example :
​
<?php if($this->data["sluzba"] = "servis_pravidelny"): ?>
...
...
...
<?php endif; ?>
<?php if($this->data["sluzba"] = "pneuservis"): ?>
...
...
...
<?php endif; ?>
<?php if($this->data["sluzba"] = "nahradne_vozidlo"): ?>
...
...
...
<?php endif; ?>
​
but in email i see last value only . how i can fix it thanks .

== not =

Thanks healyhatman .
​
Can I show in Email not value but show value from frontend for dropdown .
​
Example dropdown:
material=Materiál
pneuservis=Pneuservis
nahradne_vozidlo=Náhradné vozidlo
​
I want show in email Náhradné vozidlo , not nahradne_vozidlo.
​
Can I do it ? thanks

No. You have to do it again - like

$values = [ ''material' => 'Materiaaaal', 'pneuservis' => 'Pneuservis', etc etc ];
echo $values[$this->data('field_name')] ?? 'Invalid selection';

Question. Can this PHP be used when creating TCPDF File to hide empty fields? I tried to enter same code used in email message (works great) but not for TCPDF. Thank you