CodeIgniter Error: variable references

Question

I've deployed my source code in XAMPP. I'm getting following errors.

Notice: Only variable references should be returned by reference in C:\xampp\htdocs\3c_app\public_html\system\core\Common.php on line 257
Fatal error: Class 'CI_Controller' not found in C:\xampp\htdocs\3c_app\public_html\system\core\CodeIgniter.php on line 233.

My source files are:

Common.php

// Are any values being dynamically replaced?
    if (count($replace) > 0)
    {
        foreach ($replace as $key => $val)
        {
            if (isset($config[$key]))
            {
                $config[$key] = $val;
            }
        }
    }

    return $_config[0] =& $config;
}

line 257 is: return $_config[0] =& $config; and

Codeigniter.php

// Fetch the config file
    if ( ! file_exists($file_path))
    {
        exit('The configuration file does not exist.');
    }

    require($file_path);

line 233: if ( ! file_exists($file_path))

Can any one help???

You shouldn't change core files. What application code causes this error? Can you edit your question and post your app controller code that leads to error? — Tpojka
– Tpojka, Commented Jun 11, 2015 at 16:31
Possible duplicate of Only variable references should be returned by reference - Codeigniter — MGP
– MGP, Commented Oct 13, 2016 at 17:52

Community · Accepted Answer · 2017-05-23 12:10:12Z

41

Try this one:

Change it in your Common.php

if (count($replace) > 0){
    foreach ($replace as $key => $val){
        if (isset($config[$key])){
            $config[$key] = $val;
        }
    }
}

$_config[0] =& $config;
return $_config[0];

See also here , for more reference : Only variable references should be returned by reference - Codeigniter . I hope this helps.

edited May 23, 2017 at 12:10

CommunityBot

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answered Jun 12, 2015 at 1:05

aiai

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Comments

Abdulla Nilam · Accepted Answer · 2015-06-12 03:38:43Z

16

In Common.php Change this

return $_config[0] =& $config;

to this

$_config[0] =& $config;
return $_config[0];

Problem is with assigning and returning data.

answered Jun 12, 2015 at 3:38

Abdulla Nilam

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Comments

A J · Accepted Answer · 2016-09-16 12:16:19Z

2

If your code is still not working, then try this.

$_config[1]=& $config;
return $_config[0];

edited Sep 16, 2016 at 12:16

A J

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answered Sep 16, 2016 at 11:27

vijay kant sharma

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1 Comment

Marcelo Agimóvel Over a year ago

This results in: "A PHP Error was encountered Severity: Notice Message: Undefined index: subclass_prefix Filename: core/CodeIgniter.php Line Number: 237"

Karthik SWOT · Accepted Answer · 2018-12-10 05:18:06Z

0

Codeigniter itself fixed that error now.

You just update current updated version of Codeigniter in here.

It will solve your error.

answered Dec 10, 2018 at 5:18

Karthik SWOT

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