Fatal error: Only variables can be passed by reference in /home/..../wp-content/plugins/qtranslate-x/admin/qtx_admin.php on line 32 · Issue #532 · qtranslate/qtranslate-xt · GitHub
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Drupal 7 error on PHP 7: Fatal error: Only variables can be passed by reference in C:\xampp\htdocs\xxx\sites\all\modules\commerce\modules\cart\commerce_cart.module on line 1344 | Knowledge Basecamp: iBuild.PH
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PHP: Only variables should be passed by reference · Issue #2409 · protocolbuffers/protobuf · GitHub
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PHP Fatal error: Only variables can be passed by reference on line 18 · Issue #7 · librespeed/speedtest · GitHub
Pass-By-Value as a Parameter Passing Mechanism in Java | Baeldung
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