Only variables should be passed by reference /system/codeigniter/Common.php · Issue #5224 · bcit-ci/CodeIgniter · GitHub
A PHP Error was encountered Severity: Notice Message: Only variable references should be returned by reference Filename: core/Common.php Line Number: 257 · Issue #300 · daylightstudio/FUEL-CMS · GitHub
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Codeigniter2.0.3 on PHP7: only variable references should be returned by reference(Common,Loader) - YouTube
Only variables should be passed by reference /system/codeigniter/Common.php · Issue #5224 · bcit-ci/CodeIgniter · GitHub
![PHP: Only variables should be passed by reference - PHP Error - Mazz i Torch - The latest global technology multi-platform entertainment media PHP: Only variables should be passed by reference - PHP Error - Mazz i Torch - The latest global technology multi-platform entertainment media](https://i0.wp.com/www.mazzitorch.com/wp-content/uploads/2020/02/Only-variables-should-be-passed-by-reference.jpg)