<?php
$real = array(-7.8, 0, 0.1, 0.3, 1, 1.1, 55.1);
$result = trader_ceil($real);
var_dump($result);
/*
array(7) {
[0]=>
float(-7)
[1]=>
float(0)
[2]=>
float(1)
[3]=>
float(1)
[4]=>
float(1)
[5]=>
float(2)
[6]=>
float(56)
}
*/