Strip whitespace from associative array Keys

Question

I have an associative that outputs whitespace in the key and value. I need to strip the whitespace from first letter and also the last letter and keep the space inbetween.

I have tried

$stripResults = array_filter(array_map('trim', $results));

This strips the value perfectly but not the key. How do I strip the key and value?

Answer 1

Keys must be processed separately:

$a = array_map('trim', array_keys($stripResults));
$b = array_map('trim', $stripResults);
$stripResults = array_combine($a, $b);

Answer 2

Try this function will help you..

function trimArrayKey(&$array)
{
    $array = array_combine(
        array_map(
            function ($str) {
                return str_replace(" ", "_", $str);
            },
            array_keys($array)
        ),
        array_values($array)
    );

    foreach ($array as $key => $val) {
        if (is_array($val)) {
            trimArrayKey($array[$key]);
        }
    }
}

Hope this helps...

Answer 3

If you're looking at this and need to remove or replace spaces that are not at beginning or end of key, you can pass an array to str_replace :

$my_array = array( 'one 1' => '1', 'two 2' => '2' );
$keys = str_replace( ' ', '', array_keys( $my_array ) );
$results = array_combine( $keys, array_values( $my_array ) );

Example: https://glot.io/snippets/ejej1chzg3

Answer 4

The accepted answer didn't solve the problem for my particular scenario, but this did the trick.

$temp = array();
foreach ($stripResults as $key => $value) {
    $temp[trim($key)] = trim($value);
}
$stripResults = $temp;