Define constant PHP

Question

I have a multi-language script that works like this:

en.php

define('lang_hello_world', 'Hello World!');

index.php

<?php include('en.php'); echo lang_hello_world; ?>

The script works fine and replace the language. But now I need to convert the constant that are stored on MySQL.

The lang_hello_world is in MySQL and I need to print converted on the page, how can I do this?

Answer 1

In the en.php, you need connect the database and define the value, something like this:

$mysqli = new mysqli("localhost", "my_user", "my_password", "world");

if (mysqli_connect_errno()) {
    printf("Connect failed: %s\n", mysqli_connect_error());
    exit();
}

$result = mysqli->query("SELECT * FROM language_table WHERE language = 'EN' LIMIT 1");
$row = $result->fetch_assoc();
define('lang_hello_world', $row[0]['lang_hello_world']);

Hope can help!

Answer 2

Use constant() . If $row['var'] fetched from the database equals lang_hello_world then:

$val = constant($row['var']);

Now $val equals Hello World! if the English file is loaded. Or obviously:

echo constant($row['var']);

Answer 3

Just grab it out of your database before you put it in your constant?

<?php
    mysql_connect("localhost", "root", "passw");
    mysql_select_db("languages");
    $query = mysql_query("SELECT lang_hello_world FROM languages");
    $fetch = mysql_fetch_assoc($query);

    define("lang_hello_world", $fetch['lang_hello_world']);
    mysql_close();
?>