September 2001
Intermediate to advanced
768 pages
32h 45m
English
Content preview from PHP Functions Essential Reference
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headers_sent
int headers_sent(void)
Checks whether HTTP headers have been sent.
Returns:
TRUE if headers have been sent; FALSE if not
Description:
Checks whether HTTP headers have been sent by the server to the client and returns TRUE if they have.
Version:
Existing since version 3.0.8
Example:
Check whether headers have been sent
if (headers_sent()) {
echo "Headers Sent!";
} else {
Header("Location: http://www.newriders.com/");
}
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.