如何用PHP设置3种语言？

I try to insert a third language in an existing page wich is already in french and english. I'm kind of beginner with php.

Here's the code:

<?php
$lang = (isset($_GET['lang']) && $_GET['lang'] == 'en') ? 'en' : 'fr' ;
$langParam = ($lang == 'en') ? '&lang=en' : '';
$typeTerms = array(


'fr' => array(
    'WINES' => 'vins',
    'BEERS' => 'Bières',
    'MALTCOOLER' => 'boisson à base de malt',
    'CIDER' => 'cidres',
    'ALCOHOLFREE' => 'produits sans alcool<br/>et à faible teneur en alcool',
    'OTHERS' => 'autres'
),

'en' => array(
    'WINES' => 'Wines',
    'BEERS' => 'Beers',
    'MALTCOOLER' => 'Malt Based Cooler',
    'CIDER' => 'Cider',
    'ALCOHOLFREE' => 'Alcohol-free and low-alcoholic products',
    'OTHERS' => 'Others'
)
);




?>

And I want to insert this array, and make it work!

'zh' => array(
    'WINES' => '葡萄酒',
    'BEERS' => '啤酒',
    'MALTCOOLER' => '麦芽果酒',
    'CIDER' => '苹果酒',
    'ALCOHOLFREE' => '无酒精及低度酒精饮料',
    'OTHERS' => '其它'
)

Thanks!

Just

 $lang = isset($_GET['lang'])?$_GET['lang']:"en";
 if(!in_array($lang,array("en","fr","zh"))) $lang = "en";

To add a new one:

    $typeTerms['zh'] = array(
        'WINES' => '葡萄酒',
        'BEERS' => '啤酒',
        'MALTCOOLER' => '麦芽果酒',
        'CIDER' => '苹果酒',
        'ALCOHOLFREE' => '无酒精及低度酒精饮料',
        'OTHERS' => '其它'
    );

Using the switch statement to check if the language is either en or zh. If it's fr or something else, fallbacks to the main language fr.

<?php

    switch($_GET['lang']) {
        case 'en' : $lang = 'en'; break;
        case 'zh' : $lang = 'zh'; break;
        case 'fr' :
        default: $lang = 'fr'; break;
    }

    $langParam = in_array( $lang, array('en', 'zh') ) ? '&lang=' . $lang : '';

    $typeTerms = array(

        'fr' => array(
            'WINES' => 'vins',
            'BEERS' => 'Bières',
            'MALTCOOLER' => 'boisson à base de malt',
            'CIDER' => 'cidres',
            'ALCOHOLFREE' => 'produits sans alcool<br/>et à faible teneur en alcool',
            'OTHERS' => 'autres'
        ),

        'en' => array(
            'WINES' => 'Wines',
            'BEERS' => 'Beers',
            'MALTCOOLER' => 'Malt Based Cooler',
            'CIDER' => 'Cider',
            'ALCOHOLFREE' => 'Alcohol-free and low-alcoholic products',
            'OTHERS' => 'Others'
        ),

        'zh' => array(
            'WINES' => '葡萄酒',
            'BEERS' => '啤酒',
            'MALTCOOLER' => '麦芽果酒',
            'CIDER' => '苹果酒',
            'ALCOHOLFREE' => '无酒精及低度酒精饮料',
            'OTHERS' => '其它'
        )

    );

?>

simply check if $_GET['lang'] is set:

if(isset($_GET['lang']) && in_array($_GET['lang'], array('en, 'fr', 'zh')))
    $lang = $_GET['lang'];
else
    $lang = 'en'; // your Default lang

Then define words array:

$words = array(
'en' => array(...),
    'fr' => array(...),
    'zh' => array(...)
);

and to use array:

echo $words[$lang]['beers'];

Check if it exists in your language array, and if not, fall back to fr:

$typeTerms = array(
    // terms go here
);
$lang = isset( $typeTerms[ $_GET[ 'lang' ] ] ) ? $_GET[ 'lang' ] : 'fr';
$langParam = ($lang != 'fr') ? "&lang=$lang" : '';

Note that you need to place this code after you define the $typeTerms.

This way, you can add as many languages to your $typeTerms and never have to worry about making other changes to the code.