PHP How to replace specific string from an URL - php

Question

I'm bulding a multilanguage web in PHP, i have the class for the language change, i can do it by setting the $_SESSION or just by changing the lang value in the url, i'm working with rewrite mod for apache so this is how my URL looks like:
http://www.server.com/en/something/else/to/do
I have a function that displays an upper bar in the entire site, and in that bar i have the flags for language change.
I use this class to change Language:
class IDIOMAS {
private $UserLng;
private $langSelected;
public $lang = array();
public function __construct($userLanguage){
$this->UserLng = $userLanguage;
}
public function userLanguage(){
switch($this->UserLng){
case "en":
$lang['PAGE_TITLE'] = TITULO().' | Breaking news, World news, Opinion';
// Menu
$lang['MENU_LOGIN'] = 'Login';
$lang['MENU_SIGNUP'] = 'Sign up';
$lang['MENU_LOGOUT'] = 'Logout';
$lang['MENU_SEARCH'] = 'Search';
//Suscripciones
$lang['SUBSCRIBE_SUCCESS'] = "¡Thank you, we'll let you know when we become online!";
$lang['SUBSCRIBE_EMAIL_REGISTERED'] = 'This e-mail is already registered';
$lang['SUBSCRIBE_EMAIL_INVALID'] = 'The e-mail you entered is invalid';
$lang['SUBSCRIBE_EMAIL_WRITE'] = 'You must write down your e-mail';
$lang['SUBSCRIBE_TITLE'] = '¡Subscribe!';
$lang['SUBSCRIBE_CONTENT'] = 'And be the first to read the best articles in the web';
$lang['SUBSCRIBE_PLACEHOLDER'] = 'Enter your E-mail';
$lang['SUBSCRIBE_SEND'] = 'SEND';
//LOGIN
$lang['LOGIN_TITLE'] = 'Please Login to your account';
$lang['LOGIN_USER'] = 'User';
$lang['LOGIN_PASSWORD'] = 'Password';
$lang['LOGIN_ERROR'] = '¡User and/or password invalid!';
//REGISTER
$lang['REGISTER_NAME'] = 'Please write your name';
$lang['REGISTER_LAST_NAME'] = 'Please write your last name';
$lang['REGISTER_EMAIL'] = 'Write your E-mail';
$lang['REGISTER_CITY'] = 'Enter your City name';
$lang['REGISTER_COUNTRY'] = '¿Where are you from?';
$lang['REGISTER_ZIP_CODE'] = 'Enter your ZIP Code';
$lang['REGISTER_DATE_BIRTH'] = 'Please enter your date of birth';
return $lang;
break;
case "es":
$lang['PAGE_TITLE'] = TITULO().' | Noticias de última hora, Noticias mundiales, Matrices de opinión';
// Menu
$lang['MENU_LOGIN'] = 'Entrar';
$lang['MENU_SIGNUP'] = 'Registrarse';
$lang['MENU_LOGOUT'] = 'Salir';
$lang['MENU_SEARCH'] = 'Buscar';
//Suscripciones
$lang['SUBSCRIBE_SUCCESS'] = "¡Gracias, te avisaremos cuando estemos online!";
$lang['SUBSCRIBE_EMAIL_REGISTERED'] = 'Este email ya se encuentra registrado';
$lang['SUBSCRIBE_EMAIL_INVALID'] = 'El correo que introdujiste es inválido';
$lang['SUBSCRIBE_EMAIL_WRITE'] = 'Debes escribir tu email';
$lang['SUBSCRIBE_TITLE'] = '¡Suscríbete!';
$lang['SUBSCRIBE_CONTENT'] = 'Y se el primero en leer las mejores noticias y artículos en la web';
$lang['SUBSCRIBE_PLACEHOLDER'] = 'Introduce tu E-mail';
$lang['SUBSCRIBE_SEND'] = 'Enviar';
//LOGIN
$lang['LOGIN_TITLE'] = 'Por favor inicia sesión en tu cuenta';
$lang['LOGIN_USER'] = 'Usuario';
$lang['LOGIN_PASSWORD'] = 'Clave';
$lang['LOGIN_ERROR'] = '¡Usuario y/o clave incorrectos!';
//REGISTRO
$lang['REGISTRO_NOMBRE'] = 'Por favor introduce tu nombre';
$lang['REGISTRO_APELLIDO'] = 'Por favor introduce tu apellido';
$lang['REGISTRO_CORREO'] = 'Introduce tu correo electrónico';
$lang['REGISTRO_CIUDAD'] = 'Introduce el nombre de tu ciudad';
$lang['REGISTRO_PAIS'] = '¿De donde eres?';
$lang['REGISTRO_CODIGO_POSTAL'] = 'Introduce tu Código Postal';
$lang['REGISTRO_FECHA_NAC'] = 'Por favor introduce tu fecha de nacimiento';
return $lang;
break;
}
}
}
I use this class with this code:
$language = new IDIOMAS($lang);
$langArray = array();
$langArray = $language->userLanguage();
And set the language like this:
if (!isset($_SESSION['idioma'])){
$lang = substr($_SERVER['HTTP_ACCEPT_LANGUAGE'], 0, 2);
$_SESSION['idioma'] = $lang;
}else{
$lang = $_SESSION['idioma'];
}
if(isset($_GET['lang']) && in_array($_GET['lang'], array('en', 'es'))){
$_SESSION['idioma'] = $_GET['lang'];
$lang = $_SESSION['idioma'];
}
Now the issue i have is that when i try to change language of the page i'm on, i mean, if i'm located in www.server.com and nothing else i need to put the /es or /en at the end for changing the lang, but if i'm in www.server.com/es/something/else/to/do i need to change specificallly the /es parameter.
I have a function to get the current url for redirections when being logged or register.
function getUrl() {
$url = #( $_SERVER["HTTPS"] != 'on' ) ? 'http://'.$_SERVER["SERVER_NAME"] : 'https://'.$_SERVER["SERVER_NAME"];
$url .= $_SERVER["REQUEST_URI"];
return $url;
}
I was trying to change the lang value inside that function with no success,
Really appreciate any help

Answer 1

Here is a simple solution that I would do. I don't know if its exactly what you'll want to use:
// Find the first forward slash location
$pos1 = strpos($url,'/'); // The whole URL
// You only need this next line if your language codes are different sizes
// If they are always 2 then can alter the code to not use it
$pos2 = strpos($url,'/',$pos1); // Now find the second by offsetting
$base = substr($url,0,$pos1); // Get domain name half
$end = substr($url,$pos2); // Get everything after language area
// Now from the function return the result
$val = $base.'/'.$newlang.'/'.$end;
return $val;
You may need to add or subtract 1 on the $pos to get the right values returned, like so:
$pos2 = strpos($url,'/',$pos1+1); // In case its finding the wrong slash
$base = substr($url,0,$pos1-1); // In case its returning the slash
$end = substr($url,$pos2+1); // In case its return the slash
Please tweak and test this, it is only the concept in action, I have not tested this snip-it.

Answer 2

Finally i got it by modifying the getUrl function to this:
function getUrl($newlang) {
$url = #( $_SERVER["HTTPS"] != 'on' ) ? 'http://'.$_SERVER["SERVER_NAME"] : 'https://'.$_SERVER["SERVER_NAME"];
$url .= $_SERVER["REQUEST_URI"];
$substr = substr($url,27,3);
$base = substr($url,0,28);
$resto = substr($url,31,1000);
$newUrl = $base.$newlang."/".$resto;
return $newUrl;
}
and calling the function like this getUrl("en") or getUrl("es");
Maybe this can be usefull for someone else.