CodeIgniter 3.1.0到3.1.2升级失败

Question

I have an application that has CodeIgniter version 3.1.0 and I am trying to "upgrade" to 3.1.2 (latest version)

I have no custom files in the System folder. I had renamed the system folder (for security reasons) and that change is in my index.php As soon as I switch on the old system folder, application works just fine.

The error that I get is:

PHP Parse error:  syntax error, unexpected T_CONST in C:\\prj\\www\\nbo\\systemXXYYZZ\\core\\CodeIgniter.php on line 58

Line 58 of the CodeIgniter.php is:

LINE 37:defined('BASEPATH') OR exit('No direct script access allowed');
/* COMMENTS IN BETWEEN */         
LINE 58: const CI_VERSION = '3.1.2';

My php version is 5.2.4, apache version is 2.2.6

Answer 1

const won't work on php version 5.2.x.

The latest version of codeigniter is supported only on php 5.3.7+ , so I highly advice you to upgrade your PHP version.

You could downgrade your project to codeigniter 3.0.5, which is the last version that supports php 5.2.x, but it's not recommended.

Answer 2

CodeIgniter 3.1.x recommends PHP 5.6+ and requires at the very least PHP 5.3.7.

Removal of PHP 5.2 support (which nobody should need today) is prominently mentioned in the upgrade instructions .