Error message- Notice: Undefined index:

[Hal Halloway]

How do I fix this error message below? Thanks.
Notice: Undefined index: key_word in C:\Program Files\Apache
Group\Apache2\htdocs\search010.php on line 55

....
if( $_GET['key_word'] ) { // line 55

// connect to the database
mysql_pconnect("localhost","sarah","password")
or die("ERROR: Could not connect to database!");
mysql_select_db("howto");
....

[Dani CS]

Hal Halloway wrote:

How do I fix this error message below? Thanks.
Notice: Undefined index: key_word in C:\Program Files\Apache
Group\Apache2\htdocs\search010.php on line 55

...
if( $_GET['key_word'] ) { // line 55
Change it into:

if (isset($_GET['key_word']))

// connect to the database
mysql_pconnect("localhost","sarah","password")
or die("ERROR: Could not connect to database!");
mysql_select_db("howto");
...