Comments on: MySQL & PHP – SQL_CALC_FOUND_ROWS – An easy way to get the total number of rows regardless of LIMIT

By: Roy

Roy — Tue, 07 Feb 2012 19:08:34 +0000

Its very nice in theory… bit me in the butt today on a high traffic operation… :/

Its fine for small loads, but I’d forget it for heavy stuff…

GB3 — Thu, 22 Sep 2011 22:06:07 +0000

Looks like you’re missing the “C” in CALC on line 2.

$sql = “SELECT SQL_CALC_FOUND_ROWS * FROM users LIMIT 0, 10″;
instead of
$sql = “SELECT SQL_CAL_FOUND_ROWS * FROM users LIMIT 0, 10″;

Thanks for the post.

nik — Thu, 16 Jun 2011 17:40:56 +0000

Or just:

$sql = implode(‘ SQL_CALC_FOUND_ROWS ‘ , explode(‘ ‘, trim($sql) , 2));

But take care! Be sure, your query separates SELECT with space, not tab or new line from the rest.