<slide title="Changing Existing Rows">
<example title="Using UPDATE" result="1"><![CDATA[<?
  mysql_connect('localhost');
  mysql_select_db('foo');
  $result = mysql_query(
	"update users set email = 'babycarl@lerdorf.com'
	 where id = 'carl'");
  if($result) {
	echo mysql_affected_rows();
  } else {
	echo mysql_error();
  }
?>]]></example>
<blurb title="REPLACE INTO">
You can also use %REPLACE INTO% to update a row if it exists and
insert it if it doesn't.
</blurb>
</slide>
