Codeigniter is one of the top development frameworks you can find for PHP. CI provides a combination of powerful web applications development features with a very small footprint.
If you are running Codeigniter 2 and recently upgraded to latest PHP version (PHP 5.6.0+ and Apache 2.0+), you have definitely come across the error shown below.
A PHP Error was encountered Severity: Notice Message: Only variable references should be returned by reference Filename: core/Common.php Line Number: 257
quick fix/hackEdit filename: core/Common.php, line number: 257
return $_config =& $config;after
$_config =& $config; return $_config;