## Debugger Protocol

The PHP 3 debugger protocol is line-based. Each line has a type, and several lines compose a message. Each message starts with a line of the type start and terminates with a line of the type end. PHP 3 may send lines for different messages simultaneously.

A line has this format:

    date time host(pid) type: message-data

date
  Date in ISO 8601 format (yyyy-mm-dd)
time
  Time including microseconds: hh:mm:uuuuuu
host
  DNS name or IP address of the host where the script error was generated.
pid
  PID (process id) on host of the process with the PHP 3 script that generated this error.
type

  Type of line. Tells the receiving program about what it should treat the following data as:

  Debugger Line Types
  Name | Meaning
  --- | ---
  start | Tells the receiving program that a debugger message starts here. The contents of data will be the type of error message, listed below.
  message | The PHP 3 error message.
  location | File name and line number where the error occurred. The first location line will always contain the top-level location. data will contain file:line. There will always be a location line after message and after every function.
  frames | Number of frames in the following stack dump. If there are four frames, expect information about four levels of called functions. If no "frames" line is given, the depth should be assumed to be 0 (the error occurred at top-level).
  function | Name of function where the error occurred. Will be repeated once for every level in the function call stack.
  end | Tells the receiving program that a debugger message ends here.

data
  Line data.

Debugger Error Types
Debugger | PHP 3 Internal
--- | ---
warning | E_WARNING
error | E_ERROR
parse | E_PARSE
notice | E_NOTICE
core-error | E_CORE_ERROR
core-warning | E_CORE_WARNING
unknown | (any other)

Example#1 Example Debugger Message

    1998-04-05 23:27:400966 lucifer.guardian.no(20481) start: notice
    1998-04-05 23:27:400966 lucifer.guardian.no(20481) message: Uninitialized variable
    1998-04-05 23:27:400966 lucifer.guardian.no(20481) location: (null):7
    1998-04-05 23:27:400966 lucifer.guardian.no(20481) frames: 1
    1998-04-05 23:27:400966 lucifer.guardian.no(20481) function: display
    1998-04-05 23:27:400966 lucifer.guardian.no(20481) location: /home/ssb/public_html/test.php3:10
    1998-04-05 23:27:400966 lucifer.guardian.no(20481) end: notice