- var_dump: documentation ( source)
- array_filter: documentation ( source)
- trim: documentation ( source)
<?php
$arr=[' ', ' foo ', ' ', ' bar ', 'baz ', ' '];
function something(array $arg)
{
array_filter($arg, function(&$el){return strlen($el=trim($el));});
}
var_dump($arr);
something($arr);
var_dump($arr);