我创建一个简单的语言功能失败了，我做错了什么？

Question

I tried to create a simple language function, but I can't get it to work. The idea should be clear. I'm not getting any error messages but it won't show my text either. This is my code:

inc/text.php:

<?php

$show = array(

"welcome" => "Welkom @ ....", 
'test' => true 

);

function show($foo) {

echo $show[$foo];

}

?>

index.php:

<?php show("welcome"); ?>

Answer 1

It looks to me like you're declaring $show outside of the scope of function show($foo)

either declare $show inside the function or do this:

$show = array(); //blah blah

function show($foo)
{
    global $show;
    echo $show[$foo];
}