下面程式碼錯在哪裡？為什麼要運行提示語法錯誤？

Question

<?php
$arr1 = ['id'=>100,'demo'=>"SQ"];
$arr2 = [1=>100, 1.3=> "SQ", 1.7="SHI", true="強"];
 print_r($arr1);
 print_r($arr2);
?>

Answer 1

一樓正解

Answer 2

1.7==>      真=>