how to off this error in php

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Only variables can be passed by reference

I am having this error in php

Only variables should be passed by reference

and such warnings are displaying in millions of places. How can I off this error?

Pass variables rather than values to the method/function that raises the problem - easy! PHP is trying to write a value to a value, which is impossible. — halfer, Feb 28 '12 at 16:27
Downgrade your PHP to 4.4, or change the error reporting level, OR (even better) update your code! — ajreal, Feb 28 '12 at 16:28
No, that is not a duplicate of this. This question wants the warning explained; the other is a design question about avoiding the issue in the first place (with foreknowledge of the warning's meaning). — Lightness Races in Orbit, Feb 28 '12 at 16:29
it was working on local machine. But after uploading to remote machine this warning is displaying. I can not change whole code neither i can change php version — Kutta, Feb 28 '12 at 16:31
@Kutta: What decision process did you go through when deciding to upload to a machine running a different PHP version? — Lightness Races in Orbit, Feb 28 '12 at 16:35

score 3 · Answer 1 · answered Feb 28 '12 at 16:26

By only passing variables by reference, not other things.

The "other things" in this case may well be the result of function calls, which are not variables.

e.g.

array_pop(Array(1,2,3,4));

array_pop takes a reference, but Array(1,2,3,4) is not a variable and only variables can be passed by reference.

^{I'd be able to give a better answer if we had any idea what even one of the pieces of your code looked like.}

1 Answers1