Is there something like ipython for PHP? Syntax highlighting and not having the console exit to shell on the first exception would be nice to haves. :)
The Interactive Shell will be improved in PHP 5.4.
See http://schlueters.de/blog/archives/133-Now-in-trunk-Improved-interactive-shell.html
Improved CLI Interactive readline shell (Johannes)
- Added cli.pager ini setting to set a pager for output.
- Added cli.prompt ini settingto configure the shell prompt.
- Added shortcut #inisetting=value to change ini settings at run-time.
- Don't terminate shell on fatal errors.
An alternative would be http://phpsh.org/
phpsh is an interactive shell for php that features readline history, tab completion, quick access to documentation. It was developed at Facebook and ironically, is written mostly in python. It is open source and released under a modified BSD license.