You have a precedence problem.

General rule:
Use or to join statments together (where you'd otherwise use an if).
Use || when you'll use the result of the operation (i.e. in an assignment, to pass to a function, etc).

Omitting parens from function calls has a few pitfalls, including this one. You might be better off using them.

In reply to Re: Variable assignment after logical OR by ikegami
in thread Variable assignment after logical OR by rq-2102

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