为什么我在 PHP 中收到意外的 T_NEW 错误？

Question

I created a user model in Code Igniter.

class User extends CI_Model {
    function __construct() {
        parent::__construct();
    }

    public function new($username, $email, $password, $studentID="") {
        $this->db->query("INSERT INTO user VALUES (0, '$username', '$email', '$password', '$studentID')");
    }
}

However, I am getting this PHP error.

Parse error: syntax error, unexpected T_NEW, expecting T_STRING in /home/davidfaux/testApp/application/models/user.php on line 12

Line 12, by the way, is this line.

public function new($username, $email, $password, $studentID="") {

What is a T_NEW? Why am I getting the error?

Answer 1

new is a reserved word for creating new objects, like new Person('Joe') . You should rename your function.

See http://php.net/manual/en/reserved.keywords.php for reference.

These words have special meaning in PHP. Some of them represent things which look like functions, some look like constants, and so on--but they're not, really: they are language constructs. You cannot use any of the following words as constants, class names, function or method names. Using them as variable names is generally OK, but could lead to confusion.

Answer 2

new函数是用于实例化对象的保留关键字，它不是可覆盖的函数。

Answer 3

The accepted answer is correct.

But my case was different and I was redirected here, for the same error search.

My case:
The project was working on server1.
For R&D i uploaded this same code on server2.
On server2 i faced the above error.

Reason:
"Support for 'NEW' was added in PHP 7.0"

So i checked my PHP version and it was lower.
Check you PHP version with phpinfo();