Question

function blog_gettag(){
    $terms = mysql_query('SELECT vid,name FROM term WHERE vid=2');
    foreach ($terms as $term){
        return $term->name;
    }
}

When i invoke the function echo blog_gettag(). there is only one result. but when i change the function retrun to echo. then blog_gettag().it prints ok. why?

Answer 1

That’s because you’re only returning one item. You’re returning as soon as it finds the first item.

A solution would be to return an array with all tag names, like this:

function blog_gettag(){
    $terms = mysql_query('SELECT vid,name FROM term WHERE vid=2');
    $items = array(); // Array holding return values
    foreach ($terms as $term){
        $items[] = $term->name;
    }

    return $items;
}

You can then iterate over all tags like this:

$tags = blog_gettag();
foreach($tags as $tag) {
    echo $tag;
}