Strict Standards: Non-static method

问题

I'm running Ubuntu + PHP 5.4 and got such error:

Strict Standards: Non-static method XTemplate::I() should not be called statically, assuming $this from incompatible context in ... on line 339

And that method looks like this:

interface ITemplate
{
    public function I();
}

class XTemplate implements ITemplate
{
    public function I()
    {
             ...
    }
}

And this code is running normal on Windows 7 in XAMPP. I have found only advices to turn off error_reporing, but I need to solve it. Do I need to install some modules on turn on some other settings in php.ini ?

回答1:

You are getting the error message because you are calling the function statically instead of creating an instance of XTemplate class. Depending on your situation, either make the function static:

static public function I()
    {
             ...
    }

Or first create an instance of XTemplate:

$myXtemplate = new XTemplate();
$myXtemplate->I();

I hope this answers your question.

Edit: This page may be interesting to you.

回答2:

I had same error, all you need is a change in Interface: public function I(); change to public static function I(); and when you create instance use

public static function I();

I hope this help.

来源：https://stackoverflow.com/questions/15897797/strict-standards-non-static-method