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Asked: 2026-06-07T02:33:10+00:00

Trying to understand this entry in the php manual on debug_backtrace . I don’t

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Trying to understand this entry in the php manual on debug_backtrace.

I don’t understand what they mean by “this parameter is a bitmask for ….”

I have done web searches on bitmasks and my head is spinning round so I have decided I don’t really want to learn the detail about it but just to know how I can supposed to add the options to that function.

Do I put in both options as in

debug_backtrace(DEBUG_BACKTRACE_PROVIDE_OBJECT, DEBUG_BACKTRACE_IGNORE_ARGS)

if I want both and one of them if I only want that one?

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1 Answer

  1. Editorial Team

    It means you combine options with the bitwise OR operator: |.

    For example:

     debug_backtrace(DEBUG_BACKTRACE_PROVIDE_OBJECT | DEBUG_BACKTRACE_IGNORE_ARGS);

    For more details about bitmasks: http://en.wikipedia.org/wiki/Mask_(computing)

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