PHP数组条件短语法

Question

Here is what I have, I know I can rewrite my conditional syntax but I just wanted to see if there was something else I can do with what I have.

$sleeping[] = ($a->day_bed == 1) ? 'Day Bed' : false;
$sleeping[] = ($a->fold_up_bed == 1) ? 'Fold Up Bed' : false;
$sleeping[] = ($a->murphy_bed == 1) ? 'Murphy Bed' : false;
$sleeping[] = ($a->trundle_bed == 1) ? 'Trundle Bed' : false;

I'm trying to test for an empty array or not and rather than an empty array I get:

Array
(
    [0] => 
    [1] => 
    [2] => 
    [3] => 
)

This never registers as "empty". As far as I can tell I need the "else" syntax on there otherwise it fails.

Is there something else I can use besides NULL or FALSE? Or any other way to format it? I like this format because I have around 600 of these and it makes it much easier to read. Any suggestions?

Answer 1

You'll have to change the format as the check for existence needs to happen before you push another element onto the array. This should work:

if ($a->day_bed == 1) $sleeping[] = 'Day Bed';

You can save yourself lots of work by automating this task, eg like this

$bedTypes = array(
    "day_bed" => "Day Bed",
    "fold_up_bed" => "Fold up bed"
);
foreach ($bedTypes as $key=>$val) {
    if ($a->{$key} == 1)
        $sleeping[] = $val;
}