<?php
$a=100.84;
settype($a,'int');
var_dump($a);
//??? int (100)
?>
? ????? <?php
$a=100.84;
var_dump(settype($a,'int'));
//??? ?? bool(true)
?>
2
0
0
settype?? ?? ?? ???, ??? ?? ??? ???? true? ?????.
![[? ?????] Node.js ?? ??](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
