Only variable references should be returned by reference. · Issue #55 · fromcouch/refreak · GitHub
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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
Codeigniter2.0.3 on PHP7: only variable references should be returned by reference(Common,Loader) - YouTube