PHP GET method is getting wrong data - php

Question

I fill the next form:
<form name="frmContacto" class="form-horizontal" method="GET" action="./mail/contact_me.php">
<fieldset>
<legend class="text-center header">Formulario de contacto</legend>
<div class="form-group">
<span class="col-md-1 col-md-offset-2 text-center"><i
class="fa fa-user bigicon"></i></span>
<div class="col-md-8">
<input id="name" name="name" type="text" placeholder="Nombre"
class="form-control">
</div>
</div>
<div class="form-group">
<span class="col-md-1 col-md-offset-2 text-center"><i
class="fa fa-envelope-o bigicon"></i></span>
<div class="col-md-8">
<input id="email" name="email" type="text" placeholder="Correo electrónico"
class="form-control">
</div>
</div>
<div class="form-group">
<span class="col-md-1 col-md-offset-2 text-center"><i
class="fa fa-phone-square bigicon"></i></span>
<div class="col-md-8">
<input id="phone" name="phone" type="text" placeholder="Teléfono"
class="form-control">
</div>
</div>
<div class="form-group">
<span class="col-md-1 col-md-offset-2 text-center"><i
class="fa fa-pencil-square-o bigicon"></i></span>
<div class="col-md-8">
<textarea class="form-control" id="message" name="message"
placeholder="Introduce aquí tu mensaje." rows="7"></textarea>
</div>
</div>
<div class="form-group">
<div class="col-md-12 text-center">
<a href="mailto:xxx#gmail.com?Subject=Hello%20again" target="_top">
<button type="submit" class="btn btn-primary btn-lg">Enviar</button>
</a>
</div>
</div>
</fieldset>
</form>
PHP side:
<?php
$name = isset($_GET['name']);
echo $name;
$email_address = isset($_GET['email']);
echo $email_address;
$phone = isset($_GET['phone']);
echo $phone;
$message = isset($_GET['message']);
echo $message;
// Create the email and send the message
$to = 'xxx#gmail.com'; // Add your email address inbetween the '' replacing yourname#yourdomain.com - This is where the form will send a message to.
$email_subject = "Formulario de contacto web: $name";
$email_body = "Ha recibido un nuevo mensaje desde la web.\n\n" . "Detalles:\n\Nombre: $name\n\nEmail: $email_address\n\Teléfono: $phone\n\Mensaje:\n$message";
$headers = "From: noreply#yourdomain.com\n"; // This is the email address the generated message will be from. We recommend using something like noreply#yourdomain.com.
$headers .= "Reply-To: $email_address";
mail($to, $email_subject, $email_body, $headers);
return true;
?>
I think GET method is getting wrong data, I fill the form with text strings, but the echo methods are printing 1:
If I fill the form with real strings, why is the echo method printing 1 for each field? Also, I think that the warning is because the parameters are all "1", but this make no sense for me.

Answer 1

You have assigned the value of isset() to the variable:
Determine if a variable is set and is not NULL.
This will return 1 when the variable is set.
$name = isset($_GET['name']);
echo $name;
$email_address = isset($_GET['email']);
echo $email_address;
$phone = isset($_GET['phone']);
echo $phone;
$message = isset($_GET['message']);
echo $message;
The following code will check if the $_GET variable is set, then assign it:
if (isset($_GET['name'])) { $name = $_GET['name'];
echo $name;
}
if (isset($_GET['email'])) { $email_address = $_GET['email'];
echo $email_address;
}
if (isset($_GET['phone'])) { $phone = $_GET['phone'];
echo $phone;
}
if (isset($_GET['message'])) { $message = $_GET['message'];
echo $message;
}

Answer 2

You are printing the return value of isset() and not the array index you are testinging to see if it is set.
$name = isset($_GET['name']);
should be something more along the lines of:
$name = "";
if (isset($_GET['name'])) {
$name = $_GET['name'])
};
or you could use a ternary operator:
$name = (isset($_GET['name'])) ? $_GET['name'] : "";

Answer 3

Your problem is there:
$name = isset($_GET['name']);
echo $name;
Because $_GET exists, isset($_GET['name']) returns 1, which you store in $name. $name is equal to 1 now (or true).
do something like
if(isset($_GET['name']))
{
echo $_GET['name'];
}

Answer 4

You need to use like below:-
if(isset($_GET['name']))
{
$name = $_GET['name'];
}