Debugging Code and Managing Performance
13. A ____________ can help identify and solve bugs. Your Answer: ____________________________
14. What is the difference between trigger_error() and user_error()? A. B. C. D. E.
trigger_error() also allows a script to throw system-level errors user_error() also allows a script to throw system-level errors user_error() cannot be used in an error handler trigger_error() is only available in PHP 5
There is no difference
15. The _______________ function can be used to retrieve the sequence of code function calls that led to the execution of an arbitrary line of code in a script. This function is often used for debugging purposes to determine how errors occur. A. B. C. D. E.
print_r var_dump stack_dump debug_backtrace
None of the above
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