Having trouble with the Header cmd.

[Phrank]

I am in 1 program - a menu - and if the user has not entered any employees in the employees database yet I want to automatically jump the the program to add employees. I am having trouble jumping to that program. Here is my code:
<?
include 'DBConnection.php';
$result = mysql_query("SELECT from employees");
$Row=mysql_fetch_assoc($result);
$num_rows = mysql_num_rows($result);
// echo "Number of Rows=" . $num_rows;
if ($num_rows <= 0) {
header("Location: employees.php"); / Redirect browser /
/ Make sure that code below does not get executed when we redirect. */
exit;
}
?>

I have never been able to get the header command to work properly. I get:

Warning: Cannot modify header information - headers already sent by (output started at c:\employeesmenu.php:6)

Can you call a JavaScript function within a php function? I have never had problems linking to other pgms with JavaScript. If not how do you get the header command to work properly?

TIA

Frank

[laserlight]

Try and search the forums first.

No output may be sent before the last header.
This includes text and new/blank lines.

[Trs2988]

In order for header() to work, you cannot send any output to the browser before the header command. This includes text, HTML, anything - even a space. That error points to line 6, but it looks like you commented out line 6 and still isn't working. Therfore, I'd have to guess that DBConnection.php is printing some kind of output first. Pay special attention to what filename and line number the error is giving, and then go there.

[drew010]

also to answer your question, you can't call a javascript function from a php function, because php is executed server side, and javascript is executed purely on the client side after they have loaded the page.