- trim: documentation ( source)
- json_encode: documentation ( source)
<?php
$params = array(
'category_id' => 12,
'subject' => trim("asgas dgsa g"),
'body' => trim("0sn asd8gua9 sd8g"),
'from' => array(0=> 123, ),
'to' => array('name' => 'adsgasd gsadgsdg', 'email' => 'adsgasd gsadgsdg'),
);
echo json_encode($params);