Kasrni butun songa aylantirish PHPda

int buyrug‘i kasr uchun qo‘llanilsa, kasrning faqat butun qismi olinadi:

php<?php
  $test = (int) '1.2';
  var_dump($test); // 1 ni chiqaradi
?>

Buyruq shu tarzda ishlaydi, agar bizda kasr matn emas, balki oddiy kasrli son bo‘lsa ham:

php<?php
  $test = (int) 1.2;
  var_dump($test); // 1 ni chiqaradi
?>

Задание 1

Quyidagi matnni butun songa aylantiring:

php<?php
  $test = '12.345';
?>