System print by default else message in php - php

Question

I write these code for searching functionality in my project.
If user enter correct zip code it show one form if zip code is wrong it show some message which i write in else condition.
But by default is show the else message when user enter first time on page.
I want to show that(message which i write in else condition) message if user enter wrong zip code what i do?Any suggestion.
<small>Enter your zipcode to book our service</small>
<?php if($this->isAllowedZipcode=="Matched"){?>
<div class="row">
</div>
<?php } ?>
<?php } else
{ ?>
<div class="row">
<div class="col-sm-12 col-xs-12">
<p>Sorry but our services are not available in your area. We are working hard to cover as much area as we can. Thank you for using the system.</p>
<?php } ?>

Answer 1

Your code seems to be incorrect/incomplete, but as per your requirements, you could do it as follow:
<small>Enter your zipcode to book our service</small>
<?php if($this->isAllowedZipcode=="Matched"){ ?>
<div class="row">
//ZIPCODE MATCHED
</div>
<?php } else { ?>
<div class="row">
<div class="col-sm-12 col-xs-12">
<p>Sorry but our services are not available in your area. We are working hard to cover as much area as we can. Thank you for using the system.</p>
</div>
</div>
<?php } ?>

Answer 2

You can use elseif condition when you can test if the zip code is set, not only else.
<small>Enter your zipcode to book our service</small>
<?php if($this->isAllowedZipcode=="Matched"){?>
<div class="row">
</div>
<?php } elseif (isset($inputZipCode))
{ ?>
<div class="row">
<div class="col-sm-12 col-xs-12">
<p>Sorry but our services are not available in your area. We are working hard to cover as much area as we can. Thank you for using the system.</p>
<?php } ?>