PHP and session.cookie_path - Heisenbug.

TIL: PHP's session.cookie_path defaults to '/', which is good. But if session.cookie_path is the empty string (''), then the cookie path is set relative to the current URL. If the request is to example.com/foo/bar/bax.php and the cookie path is '', then the cookie is set for example.com/foo/bar - not example.com/ as one might expect. But then the browser goes and saves it forever. And you can the same cookie id on multiple paths and then the expire and maybe some get reset during a logout/login cycle.

tunnelling mysql over ssh

Suppose you have a database server (db.example.com) which only accepts connections from the web server (www.example.com). The web server accepts SSH connections from anywhere (so ssh user@www.example.com works). And you have 200 tables to update. Start by opening a tunnelled SSH connection in a terminal window like so: [shell]ssh user@www.example.com -L 31123:db.example.com:3306 [/shell] The command starts like a normal ssh connection.

jQuery to open external links in a new window

I need to open all external links in a site in a new window/tab. But I can't trust the users to put a class or other data in the link. And I cannot trust them to add or remove the www. part of the domain name (if it's even supposed to be there). Javascript to the rescue!

Git merge master into all branches

Suppose your git development process uses lots of branching. Yay branching. You want to keep them all up-to-date with the master branch, but constantly merging master into a dozen or more branches is a bit of a pain. Here's one way:

Apache & DNS Wildcard Hosting with Mac OS X

Problem: You want to host all of your web development sites in ~/Sites, and you don't want to fuck around with DNS and Apache configuration every time you start something new. Solution: DNS wildcards and Apache Virtual Hosting! The easier bit: get dnsmasq going Follow the directions here.
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