I'm trying to figure out ways to tweak my scripts for performance.
I've figured out that all mySQL queries should use indexed ids for
speed. (For anyone who doesn't know: mySQL indexes fields with PRIMARY
KEY, UNIQUE, or AUTO_INCREMENT in them. This means they're stored in
binary trees internally, so access time is negligible for an INT PRIMARY
KEY AUTO_INCREMENT).
But how much overhead is there in:
$link = mysql_connect($hostname,$username,$password) or die("");
$db = mysql_select_db($database,$link) or die("");
Would it be beneficial to run a single one at the beginning of every
script? Currently I have a bunch of functions each with their own
calls.
Best Regards,
Dan
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