Severity: Notice , Message: Only variable references should be returned by reference Filename: core/Common.php Line Number: 257 · Issue #3015 · bcit-ci/CodeIgniter · GitHub
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The Technically Correct, Authentic Definition Of Pass-By-Reference Is Nonsense. | by Isaac Way | Medium
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Codeigniter2.0.3 on PHP7: only variable references should be returned by reference(Common,Loader) - YouTube
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