Retrieves the number of rows from a result set. This command is only valid
for statements like SELECT or SHOW that return an actual result set.
To retrieve the number of rows affected by a INSERT, UPDATE, REPLACE or
DELETE query, use mysql_affected_rows().
Parameters
result
The result resource that
is being evaluated. This result comes from a call to
mysql_query().
Return Values
The number of rows in a result set on success, or FALSE on failure.
$result = mysql_query("SELECT * FROM table1", $link); $num_rows = mysql_num_rows($result);
echo "$num_rows Rows\n";
?>
Notes
Note:
If you use mysql_unbuffered_query(),
mysql_num_rows() will not return the
correct value until all the rows in the result set have been
retrieved.
Note:
For backward compatibility, the following
deprecated alias may be used:
mysql_numrows()
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