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, Jun 11 '15 at 16:31
Possible duplicate of [Only variable references should be returned by reference - Codeigniter](http://stackoverflow.com/questions/28348879/only-variable-references-should-be-returned-by-reference-codeigniter) — MGP, Oct 13 '16 at 17:52

score 42 · Accepted Answer · edited May 23 '17 at 12:10

42

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 '17 at 12:10

Community

1
1

answered Jun 12 '15 at 01:05

aiai

1,129
2
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score 16 · Answer 2 · answered Jun 12 '15 at 03:38

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 '15 at 03:38

Abdulla Nilam

36,589
17
64
85

score 2 · Answer 3 · edited Sep 16 '16 at 12:16

2

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

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

edited Sep 16 '16 at 12:16

A J

3,970
14
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answered Sep 16 '16 at 11:27

vijay kant sharma

23
1
3

This results in: "A PHP Error was encountered Severity: Notice Message: Undefined index: subclass_prefix Filename: core/CodeIgniter.php Line Number: 237" – Marcelo Agimóvel Feb 22 '18 at 19:05

score 0 · Answer 4 · answered Dec 10 '18 at 05:18

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 '18 at 05:18

Karthik SWOT

1,129
1
11
15

CodeIgniter Error: variable references

4 Answers4