note 90412 modified in function.msql-num-rows by danbrown
| From: | danbrown@php.net | Date: | Tue, 21 Apr 2009 13:08:13 +0000 |
| Subject: | note 90412 modified in function.msql-num-rows by danbrown | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-153542@lists.php.net to get a copy of this message | ||
If you would like to just find out how many rows are returned by a query without actually using the
results, then it's much more efficient to use SQL count function (specially for large tables
with millions of rows).
<?php
$sql = "SELECT COUNT(indexed-field) AS cnt FROM some-table";
$r = mysql_query($sql);
$row = mysql_fetch_object($r);
echo $row->cnt;
?>
--was--
If you would like to just find out how many rows are returned by a query without actually using the
results, then it's much more efficient to use SQL count function (specially for large tables
with millions of rows).
<?php
$sql = "SELECT COUNT(indexed-field) AS cnt FROM some-table";
$r = mysql_query($sql);
$row = mysql_fetch_object($r);
echo $row->cnt;
http://php.net/manual/en/function.msql-num-rows.php