Simple way of removing an array key based on its value

Question

$fields = array('timbo', '22', 'norway');

How could I unset the array key for norway based on it's value alone?

Answer 1

array_diff($fields, array('norway'))

http://php.net/array_diff

Answer 2

$key = array_search( 'norway', $fields ); 
if ($key !== FALSE) {
    unset($fields[$key]); // remove 
}

Answer 3

You could use array_search to get the index. array_search will exit after the first match.

$index = array_search('norway', $fields);
if($index !== FALSE)
    unset($fields[$index]);