$ echo 'Hello, world!'
|PDOException: SQLSTATE[HY000]  No such file or directory in lock_may_be_available() (line 167 of /Users/markbellaire/Sites/work/familydollar/www/includes/lock.inc).|
|I have Mac with OSX Mavericks installed. And I use brewStack to run my local apache/mysql environment.|
|I ran "brew doctor" at the command line and that let me know about a link of mysql not being in a directory that it needed to be in. I ran "brew link --overwrite mysql" because the old mysql was linked there at the time.|
|I stopped and started mysql and lo and behold it started working!|