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Online Sandbox for SQL and PHP: Write, Run, Test, and Share SQL Queries and PHP Code
<?php
class Arr {
private array $numbers = [];
public function add($num): Arr
{
$this->numbers[] = $num;
return $this;
}
public function push($num): Arr
{
$this->numbers = array_merge($this->numbers, $num);
return $this;
}
public function getSum(): int
{
return array_sum($this->numbers);
}
}
$arr = new Arr;
echo $arr->add(1)->add(2)->getSum();