# Interactive PHP Debugger

&reftitle.intro;

Implemented as a SAPI module, phpdbg can exert complete control over the environment without impacting the functionality or performance of your code.

phpdbg aims to be a lightweight, powerful, easy to use debugging platform for PHP. It offers the following features:

- Step-Through Debugging

- Flexible Breakpoints (Class Method, Function, File:Line, Address, Opcode)

- Easy Access to PHP with built-in eval()

- Userland API

- SAPI Agnostic - Easily Integrated

- PHP Configuration File Support

- JIT Super Globals - Set Your Own !!

- Optional readline Support - Comfortable Terminal Operation

- Easy Operation - See Help :)

## Command line options

Option | Example Argument | Description
-c | -c/my/php.ini | Set php.ini file to load
-d | -dmemory_limit=4G | Set a php.ini directive
-n |  | Disable default php.ini
-q |  | Suppress welcome banner
-v |  | Enable oplog output
-b |  | Disable color
-i | -imy.init | Set .phpdbginit file
-I |  | Ignore default .phpdbginit
-O | -Omy.oplog | Set oplog output file
-r |  | Run execution context
-rr |  | Run execution context and quit after execution (not respecting breakpoints)
-e |  | Generate extended information for debugger/profiler
-E |  | Enable step through eval, careful!
-s | -s=, -s=foo | Read code to execute from stdin with an optional delimiter
-S | -Scli | Override SAPI name, careful!
-l | -l4000 | Setup remote console ports
-a | -a192.168.0.3 | Setup remote console bind address
-x |  | Enable xml output (instead of normal text output)
-p | -p, -p=func, -p* | Output opcodes and quit
-h |  | Print the help overview
-V |  | Print version number
-- | -- arg1 arg2 | Use to delimit phpdbg arguments and php $argv; append any $argv argument after it

&reference.phpdbg.setup; &reference.phpdbg.constants; &reference.phpdbg.reference;