![When graphing HRULE items, 'Only Variables should be passed by reference' error may be seen · Issue #2724 · Cacti/cacti · GitHub When graphing HRULE items, 'Only Variables should be passed by reference' error may be seen · Issue #2724 · Cacti/cacti · GitHub](https://user-images.githubusercontent.com/12864741/59155015-5b8aba80-8a3c-11e9-8678-56f04823b5e2.png)
When graphing HRULE items, 'Only Variables should be passed by reference' error may be seen · Issue #2724 · Cacti/cacti · 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)
PHP: Only variables should be passed by reference - PHP Error - Mazz i Torch - The latest global technology multi-platform entertainment media
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