Proper configuration of php-src with CLion IDE : PHPhelp

Hi guys! Rookie here, I've been studying coding for just over 3 months, I need your help plz.

I'm doing a friends website for his wedding. I think I'm pretty much done except when submitting an RSVP, the email is not displaying all the information that was written in the contact form.

I got the PHP from Codepen and I changed some things to add more text fields to the contact form, Im thinking this is where I fucked up.

HTML:

               <form id="myForm" action="email.php" method="POST" name="contactform">
                    <div class="input-line">
                        
                        <input maxlength="50" name="first_name" class="input-name" id="first-n" type="text" required placeholder="Nombre"  /></p>
                        
                        <input maxlength="50" name="first_rut" class="input-name" id="first-r" type="text" required  placeholder="RUT" /></p>
                        
                        <input maxlength="50" name="second_name" class="input-name" id="second-n" type="text" requiredplaceholder="Nombre Acompañante"  /></p>
                       
                        <input maxlength="50" name="second_rut" class="input-name" id="second-r" type="text" required placeholder="RUT Acompañante" /></p>
                       
                        <input maxlength="30" name="telephone" class="input-name" id="phone" type="text" placeholder="Telefono" /></p>
                        
                        <input maxlength="80" name="email" class="input-name" id="emailadr" type="email" required placeholder="Email" /></p>
                    </div>
                        
                        <textarea cols="25" maxlength="1000" id="msg" name="comments" class="input-textarea" rows="6" placeholder="Cuentanos si tienes alguna restricción alimentaria o quieres dejar algun mensaje." ></textarea></p>
            
                        <button type="submit" id="submit" value="Enviar">Enviar</button>
                 </form>

PHP:

<?php
 
if(isset($_POST['email'])) {

    $email_to = "[email protected]";
 
    $email_subject = "Formulario Matrimonio";
 
    function died($error) {
 
        echo "<h1>Oops!</h1><h2>Parece que hay algún problema con el formulario                completado.</h2>";
 
        echo "<strong><p>Los siguientes elementos no están especificados correctamente.</p></strong><br />";
 
        echo $error."<br /><br />";
 
        echo "<p>Regrese al formulario y vuelva a intentarlo.</p><br />";
		echo "<p><a href='index.php'>Vuelve a la página inicial</a></p>";
        die();
	
    }
  
    $first_name = $_POST['first_name']; 
 
    $first_rut = $_POST['first_rut']; 

    $second_name = $_POST['second_name']; 
 
    $second_rut = $_POST['second_rut']; 
 
    $email_from = $_POST['email']; 
 
    $telephone = $_POST['telephone']; 
 
    $comments = $_POST['comments']; 
 
    $error_message = "";
 
    $email_exp = '/^[A-Za-z0-9._%-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4}$/';
 
    if(!preg_match($email_exp,$email_from)) {
 
    $error_message .= '<li><p>The completed e-mail address appears to be incorrect<p></li>';
 
  }
 
    $string_exp = "/^[A-Za-z .'-]+$/";
 
  if(!preg_match($string_exp,$first_name)) {
 
    $error_message .= '<li><p>Name appears to be wrong</p></li>';
 
  }
 
  if(strlen($comments) < 2) {
 
    $error_message .= '<li><p>Message appears to be incorrect</p></li>';
 
  }
 
  if(strlen($error_message) > 0) {
 
    died($error_message);
 
  }
 
    $email_message = "Form details are given below.\n\n";
 
     
 
    function clean_string($string) {
 
      $bad = array("content-type","bcc:","to:","cc:","href");
 
      return str_replace($bad,"",$string);
 
    }
 

    $email_message .= "Nombre: ".clean_string($first_name)."\n";
 
    $email_message .= "RUT: ".clean_string($first_rut)."\n";

    $email_message .= "Nombre Acompañante: ".clean_string($second_name)."\n";
 
    $email_message .= "RUT Acompañante: ".clean_string($second_rut)."\n";

    $email_message .= "Telephone: ".clean_string($telephone)."\n";
 
    $email_message .= "Email Address: ".clean_string($email_from)."\n";
 
    $email_message .= "Comments: ".clean_string($comments)."\n";
 
      
 

 
$headers = 'From: '.$email_from."\r\n".
 
'Reply-To: '.$email_from."\r\n" .
 
'X-Mailer: PHP/' . phpversion();
 
@mail($email_to, $email_subject, $email_message, $headers);  
 
?>
 
<h1>¡Gracias!</h1> <h2>Esperamos verte pronto</h2>

<?php
 
}
 
?>

And this is the info I'm getting in the email.

Nombre: Richard (but this name was actually written under "Nombre Acompañante"
RUT: BLANK
Nombre Acompañante: BLANK
RUT Acompañante: BLANK
Telephone:
Email Address: [email protected]
Comments: Nos vemos!

Doesn't actually say blank, I just filled that in.

Plz help, thank you!