- array_map: documentation ( source)
- var_dump: documentation ( source)
- explode: documentation ( source)
<?php
$string = 'one, two,need space, four ';
// original
$array = explode(',',$string);
// simple but flawed
$spaces_removed = array_map('trim', explode(',', $string));
var_dump($array);
var_dump($spaces_removed);