I'm in need of assistance with this if/else statement - php

Question

I'm doing a contact page for my site, the text is in Portuguese because I'm Brazilian, but my problem is the following: when I send parameters with ?resp=true it always enters in the first condition and I'm not able to figure out what is going wrong.
Why is the first condition met when the parameter is ?resp=true ? , here is the code that I currently have problems on:
<?php if (isset($_GET["resp"]) && $_GET["resp"] == false) { ?>
<div class="row row-centered" style="padding-top: 10px;">
<div class="alert alert-success">
<button type='button' class='close' data-dismiss='alert' aria-hidden='true'>×</button>
<strong style="text-align: center;">Sua mensagem foi enviada com sucesso.</strong>
</div>
</div>
<?php } elseif(isset($_GET["resp"]) && $_GET["resp"] == true) { ?>
<div class="row row-centered" style="padding-top: 10px;">
<div class='alert alert-danger'>
<button type='button' class='close' data-dismiss='alert' aria-hidden='true'>×</button>
<strong style="text-align: center;">Desculpe, parece que o servidor de email não esta respondendo. Por favor, tente novamente mais tarde!</strong>
</div>
</div>
<?php } ?>

Answer 1

All values recieved via the POST or GET methods (ie. in the REQUEST) are automatically seen as strings. So trying to check:
<?php
if($_GET['resp'] == true) {}
?>
will return false, and thus not enter the loop. What you want is to check the string value (instead of the boolean)
<?php
if($_GET['resp'] == 'true') {)
?>

Answer 2

You are actually trying to compare a string value to a boolean value. Since all that comes from form submit is in form of string only. So i have replaced boolean true and false with 'true' and 'false'
Try this code:
<?php if (isset($_GET["resp"]) && $_GET["resp"] == 'false') { ?>
<div class="row row-centered" style="padding-top: 10px;">
<div class="alert alert-success">
<button type='button' class='close' data-dismiss='alert' aria-hidden='true'>×</button>
<strong style="text-align: center;">Sua mensagem foi enviada com sucesso.</strong>
</div>
</div>
<?php } elseif(isset($_GET["resp"]) && $_GET["resp"] == 'true') { ?>
<div class="row row-centered" style="padding-top: 10px;">
<div class='alert alert-danger'>
<button type='button' class='close' data-dismiss='alert' aria-hidden='true'>×</button>
<strong style="text-align: center;">Desculpe, parece que o servidor de email não esta respondendo. Por favor, tente novamente mais tarde!</strong>
</div>
</div>
<?php } ?>