<Select> keeps reseting on submit

Question

I am trying to make an contact form for my website and I am using the following code. I don't know why the selector keeps reseting when the text fields don't.

Anyone know a soultion for this? Or what I am doing wrong.

( It resets when the error check is done, and fails )

<?php
session_start();
$php_self = $_SERVER['PHP_SELF'];

// on submit
if( isset($_POST[name]) && isset($_POST[email]) && isset($_POST[message]) && isset($_POST[captcha]) ){
    $name = $_POST[name];
    $email = $_POST[email];
	$telefon = $_POST[telefon];
	$option = $_POST[option];
    $message = $_POST[message];
    $captcha = $_POST[captcha];
     
    $error = 0;
    // name
    if( $name == "" ){ $error ++; $error_name = "class='error'"; }
    // email
    if( $email == "" ){ $error ++; $error_email = "class='error'"; }
    // message
    if( $message == "" ){ $error ++; $error_message = "class='error'"; }
    // captcha
    if( $captcha == "" || $captcha != $_SESSION[captcha]){ $error ++; $error_captcha = "class='error'"; }
 
    // no error, send email
    if( $error == 0){               
                         
        // your email address
        $address = "surrealcmstest@outlook.com";
         
        // email subject
        $subject = "x , Nytt Meddelande \r\n";
        // email content
        $content = "Namn: $name \r\nE-postadress: $email \r\nTelefon Nr: $telefon \r\nKontakta mig via: $option \r\nMeddelande: $message";
        // html email
        $email_content = "".$subject."";
        $email_content .= "";
        $email_content .= $content;
        $email_content .= "";                     
                 

        // send email
        mail($address, $subject, $email_content, "From: $email\r\nReply-To: $email\r\nReturn-Path: $email\r\n");         
         
        // reset variables
        $name = ""; $email = ""; $message = "";
        $mail_sent = 1;                                                             
    }
}
 
// captcha
$num = rand(1, 20);
$num2 = rand(1, 9);     
$verif = $num . " + " . $num2;
$_SESSION[captcha] = $num + $num2;      
 
if( $mail_sent == 1 ){
    echo "<div class=","sucess",">Ditt meddelande har skickats, vi återkommer så fort som möjligt.</div>";
} else {
    echo "
    <form action='".$php_self."' method='post'>
	<p><span class='required'>* är obligatoriska fält.</span></p>
    <p><strong>Namn:</strong> <span class='required'>*</span></p>
    <input type='text' ".$error_name." name='name' value='".$name."'>
    <p><strong>E-postadress:</strong> <span class='required'>*</span></p>
    <input type='email' ".$error_email." name='email' value='".$email."'>
	<p><strong>Telefon Nr:</strong></p>
    <input type='telefon' name='telefon' value='".$telefon."'>
	<p><strong>Kontakta mig via:</strong></p>
	<select name='option'>
	<option value='-'>-</option>
	<option value='Telefon'>Telefon</option>
	<option value='E-post'>E-post</option>
	</select>
    <p><strong>Meddelande:</strong> <span class='required'>*</span></p>
    <textarea ".$error_message." name='message'>".$message."</textarea>
    <p><strong>Hur mycket är ".$verif."?</strong> <span class='required'>*</span></p>            
    <input type='text' ".$error_captcha." name='captcha' value=''><br/>
    <button>Skicka</button>
    </form>";
}
?>

Answer 1

You have to add a check for each option Tag like you do with the inputs and load from the $_POST value before...

$option = $_POST['option'];

And in the select

<select name='option'>
    <option value='-'>-</option>
    <option value='Telefon' ".($option == 'Telefon' ? "selected":"").">Telefon</option>
    <option value='E-post' ".($option == 'E-post'? "selected" : "").">E-post</option>
</select>

Edited:

Changed it to the inline string statement for the output string that the OP is generating...