需要帮助这个PHP功能

Question

Here's my php code

$values = array(

        'php' => 'php hypertext processor',

        'other' => array(
            'html' => 'hyper text markup language',
            'css' => 'cascading style sheet',
            'asp' => 'active server pages',
        )

);


function show($id='php', $id2='others') {

    global $values;

    if(isset($id2)) {
        $title = $values[$id];
    }
    elseif(empty($id2)) {
        $title = $values[$id][$id2];
    }

    return $title;

}

when i do

echo show('php');

it shows "php hypertext processor"

but when i do

echo show('other','asp');

it doesnt work properly, it should display "active server pages"

Whats the error i am making? Can anybody help me out?

Answer 1

You are doing the check the wrong way around.

Also, the empty call is somewhat redundant. I would recommend this:

if(!empty($id2)) {
        $title = $values[$id][$id2];

    }
    else {
       $title = $values[$id]; 
    }