check this out dan It may help
http://www.mysql.com/doc/en/EXPLAIN.html ----- Original Message ----- From: "Dan Anderson" <[EMAIL PROTECTED]> To: "PHP List" <[EMAIL PROTECTED]> Sent: Friday, September 05, 2003 8:38 AM Subject: [PHP] mySQL overhead: Tweaking Scripts for Speed > 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 > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > > -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
