PHP 多语言 GET 参数

Question

I'm building multi-language support for PHP page. Let's say I have a page url:

http://mypage.php?user=eric&city=newyork

What is the common solution to switch between get parameters lang=en and lang=es while keeping the get parameters already in the url?

Answer 1

A useful script that returns the relative URL of the current page with the current "GET data".

<?php 
function getCurrentURL() { 
    $currentURL = basename($_SERVER["PHP_SELF"]); 
    $i = 0; 
    foreach($_GET as $key => $value) { 
        $i++; 
        if($i == 1) { $currentURL .= "?"; } 
        else { $currentURL .= "&amp;"; } 
        $currentURL .= $key."=".$value; 
    } 
    return $currentURL; 
} 
?> 

modify it and concatenate your language parameters accordingly

Answer 2

You would not keep the GET Params in the url at all times, only when your setting the language, you would use sessions to remember what language that current client is using.

create the following function in your php

function getCurrentLanguage()
{
    if(isset($_REQUEST['lang']))
    {
         //Validate that $_REQUEST['lang'] is valid
         return $_SESSION['lang'] = $_REQUEST['lang'];
    }

    if(isset($_SESSION['lang']))
    {
        return $_SESSION['lang'];
    }

    return 'en'; //Default
}

now when the user comes to the site the default language would be English, but if he navigates to index.php?lang=es then the language would be set to es, so when he navigates around the site without the ?lang=es then it would show the Spanish version.

Answer 3

You can use my favorite language PHP Multi Language Class - LangQuery

It is the easiest one I ever saw.

You can save your language data to .ini files than just call it by

include("LangQuery.php");

$L=new LangQuery();

// Write Hello World
echo($L('hello_world'));

// Write Hello World Easier - In-line Echo Feature
// You don't have to write echo. Just add '>'
$L('>hello_world');

// Use in Strings
echo("Hello Universe. {$L('hello_world')} Hello Europe");

// Write my age with parameter
$L(">my_age",25);

// Write my name and age with parameters
$L(">my_name_age","Recep",25);

Answer 4

It's better to use cookie or session/id data to store this kind of information. I'll have less things to carry around.

Answer 5

If I understand the question correctly, you want a way to add a parameter to a URL or replace its value with a new value if it already exists.

Here's a function that does so safely in all manner of URLs:

function url_with_parameter($url, $name, $value) {
    if(strpos($url, '?') === false) {
        if (strpos($url, '#') === false) {
            // No query and no fragment -- append a new query to the url
            $newurl = $url.'?'.$name.'='.$value;
        }
        else {
            // No query with fragment -- insert query before existing fragment
            $newurl = str_replace('#', '?'.$name.'='.$value.'#', $url);
        }
    }
    else {
        if (strpos($url, $name.'=') === false) {
            // With query, param does not exist -- insert at beginning of query
            $newurl = str_replace('?', '?'.$name.'='.$value.'&', $url);
        }
        else {
            // With query, param exists -- replace it
            $parsed = parse_url($url, PHP_URL_QUERY);
            parse_str($parsed, $vars);
            $newurl = str_replace($name.'='.$vars[$name], $name.'='.$value, $url);
        }
    }

    return $newurl;
}

Remember to call urlencode before using the output of this function to make a link.