Just a general usage note. I had a very difficult time solving a problem with my script, when I accidentally put one of these backticks at the beginning of a line, like so:



[lots of code]

` $URL = "blah...";

[more code]



Since the backtick is right above the tab key, I probably just fat-fingered it while indenting the code.



What made this so hard to find, was that PHP reported a parse error about 50 or so lines *below* the line containing the backtick. (There were no other backticks anywhere in my code.) And the error message was rather cryptic:



Parse error: parse error, expecting `T_STRING' or `T_VARIABLE' or `T_NUM_STRING' in /blah.php on line 446



Just something to file away in case you're pulling your hair out trying to find an error that "isn't there."