问提交表单并创建用户- Worpress + Google表单

EN

function registration_form( $username, $password, $email, $first_name, $last_name ){
echo '
 <form action="' . $_SERVER['REQUEST_URI'] . '" method="post">
 <div>
 <label for="firstname">Jméno <strong>*</strong></label>
 <input type="text" name="fname" required id="name" value="' . ( isset( $_POST['fname']) ? $first_name : null ) . '">
 </div>
 
 <div>
 <label for="website">Příjmení <strong>*</strong></label>
 <input type="text" name="lname" required id="lastname" value="' . ( isset( $_POST['lname']) ? $last_name : null ) . '">
 </div>
 
   <div>
 <label for="email">Datum narození <strong>*</strong></label>
 <input type="date" name="bday" required id="bday" value="' . ( isset( $_POST['bday']) ? $birthday : null ) . '">
 </div>
 
  <div>
 <label for="email">E-mail <strong>*</strong></label>
 <input type="email" name="email" required id="email" value="' . ( isset( $_POST['email']) ? $email : null ) . '">
 </div>
 
   <div>
 <input type="text" name="email1" required id="email1" value="' . ( isset( $_POST['email1']) ? $email1 : null ) . '" placeholder="Potvrzení emailu">
 </div>
 
  <div>
 <label for="email">Telefon <strong>*</strong></label>
 <input type="text" name="telefon" required id="telefon" value="' . ( isset( $_POST['telefon']) ? $phone : null ) . '">
 
 <br><br><br><br>
 <div>
 <label for="username">Přihlašovací jméno <strong>*</strong></label>
 <input type="text" name="username" value="' . ( isset( $_POST['username'] ) ? $username : null ) . '" placeholder="Minimálně 4 znaky. Pouze písmena a čísla.">
 </div>
 
 <div>
 <label for="password">Heslo <strong>*</strong></label>
 <input type="password" name="password" value="' . ( isset( $_POST['password'] ) ? $password : null ) . '" placeholder="Minimálně 5 znaků">
 </div>

 <div align="center"><br>
 <input type="submit" name="submit" value="Registrovat se"/>
</div></form>
 ';
}

function registration_validation( $username, $password, $email, $first_name, $last_name ) {

global $reg_errors;
 $reg_errors = new WP_Error;

//Check empty fields
 if ( empty( $username ) || empty( $password ) || empty( $email )) {
 $reg_errors->add('field', 'Prosím vyplňte povinné informace.');
 }

 //Check user name lenght greater than 4 character.
 if ( 4 > strlen( $username ) ) {
 $reg_errors->add( 'username_length', 'Přihlašovací jméno je příliš krátké: 4 znaky nejméně' );
 }

//Check user name is exists
 if ( username_exists( $username ) ){
 $reg_errors->add('user_name', 'Již existuje uživatel se stejným uživatelským jménem. Prosím, zvolte si jiné.');
 }

//validate wp user name
 if ( ! validate_username( $username ) ) {
 $reg_errors->add( 'username_invalid', 'Sorry, the username you entered is not valid' );
 }

//check password lengh 
 if ( 5 > strlen( $password ) ) {
 $reg_errors->add( 'password', 'Heslo musí mít nejméně 5 znaků.' );
 }

//check email is correct email
 if ( !is_email( $email ) ) {
 $reg_errors->add( 'email_invalid', 'Email není správný' );
 }
    
 // check email already in use or not
 if ( email_exists( $email ) ) {
 $reg_errors->add( 'email', 'Již existuje uživatel se stejným emailem.' );
 }


if ( is_wp_error( $reg_errors ) ) {
 foreach ( $reg_errors->get_error_messages() as $error ) {
 echo '<div class="zaloha">';
 echo '<strong>ERROR</strong>:';
 echo $error . '<br/>';
 echo '</div>'; 
 }
 }
}

function complete_registration() {
 global $reg_errors, $username, $password, $email, $first_name, $last_name
 if ( 1 > count( $reg_errors->get_error_messages() ) ) {
 $userdata = array(
 'user_login' => $username,
 'user_email' => $email,
 'user_pass' => $password,
 'first_name' => $first_name,
 'last_name' => $last_name,
 'nickname' => $nickname, 
 );

 $user = wp_insert_user( $userdata );
 echo '<div class = "zaloha">Vaše registrace proběhla úspěšně.</div><br>'; 
 }
}

function registration_function() {
global $reg_errors, $username, $password, $email, $first_name, $last_name;

if ( isset($_POST['submit'] ) ) {
 registration_validation(
 $_POST['username'],
 $_POST['password'],
 $_POST['email'],
 $_POST['fname'],
 $_POST['lname'],
 $_POST['nickname'] );
    
 
 // call @function complete_registration to create the user only when no WP_error is found
 complete_registration($username, $password, $email, $first_name, $last_name);
}
 
 registration_form( $username, $password, $email, $first_name, $last_name);
}