Find and remove specific items from numeric array

Question

$list = array('red', 'blue', 'white', 'green', 'black', 'orange', 'brown', 'violet', 'magenta'); 

Before doing var_dump($list), how can I remove item having key [3] and item with the value "orange", and then var_dump($list) without those items?

(Have to use "if" statement - school assignment)

Answer 1

foreach ($list as $key => &$value)
{
    if ($value == 'orange' || $key == 3)
    {
        unset($list[$key])
    }

    echo $value . "\n";
}

What have you tried though? working through problems will help you become a better programmer.

Answer 2

Without loop

    $list = array('red', 'blue', 'white', 'green', 'black', 'orange', 'brown', 'violet', 'magenta'); 
    unset($list[3]);
    unset($list[array_search('orange', $list)]);
    var_dump($list);

Answer 3

The problem could be solved using the foreach above, or you could use the criteria that you only need to use an "if" statement.

Combining the two answers above would give a more efficient solution:

unset($list[3]);
if (($key = array_search('orange', $list)) !== false)
    unset($list[$key]);
print_r($list);

unset simply eliminates that element from the array. I will get the $key for 'orange', if it exists, then unset it, and finally print the array.