(PHP 3, PHP 4 >= 4.0.0)
mysql_num_rows -- Get number of rows in result
mysql_num_rows() returns the number of rows in
a result set. This command is only valid for SELECT statements.
To retrieve the number of rows affected by a INSERT, UPDATE or
DELETE query, use mysql_affected_rows().
Example 1. mysql_num_rows() example<?php
$link = mysql_connect("localhost", "username", "password");
mysql_select_db("database", $link);
$result = mysql_query("SELECT * FROM table1", $link);
$num_rows = mysql_num_rows($result);
echo "$num_rows Rows\n";
?>
See also: mysql_affected_rows(), mysql_connect(), mysql_select_db(), and mysql_query().
For downward compatibility mysql_numrows() can also be used. This is deprecated however.