I am a new learner of php. I found a piece of code:
if($x < time()){
return [false,'error'];
}
The logic or variables don't matter, but I don't understand how [false,'error'] works. Is it a boolean, an array, or...?
1
0
0
This is an array. It has two elements of two different types. The first element type is Boolean. The second element is a string.
Arrays in PHP can contain elements of different types.
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
