You are debugging a complex issue in a PHP application. Which tool or function might be most helpful in tracing the sequence of function calls leading to the error?

  • a) echo()
  • b) var_dump()
  • c) debug_backtrace()
  • d) set_error_handler()
c) The debug_backtrace() function is the most helpful for tracing the sequence of function calls leading to the error. It provides a backtrace of the function calls made to reach the current point, making it invaluable for debugging complex issues. The other options (a, b, d) have different purposes and are not specifically designed for this task.
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