Fix PHP Strict warning: Only variables should be passed by reference. [#2272607] | Drupal.org
PHP 7.0+ - Only variables should be passed by reference · Issue #2550 · squizlabs/PHP_CodeSniffer · GitHub
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When graphing HRULE items, 'Only Variables should be passed by reference' error may be seen · Issue #2724 · Cacti/cacti · GitHub
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PHP 7.0+ - Only variables should be passed by reference · Issue #2550 · squizlabs/PHP_CodeSniffer · GitHub
Notice: Only variables should be passed by reference en PHP
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Only variables should be passed by reference in D:\xamp\htdocs\php \QB\src\Core\Http\Serialization\XmlObjectSerializer.php on line 54 · Issue #180 · intuit/QuickBooks-V3-PHP-SDK · GitHub