Which is the main difference between include() and
require() functions?
"include" is optional
you can put it inside an "IF"
like this:
if (0)
{
/* THIS WILL NOT SHOW... */
include "optional_file.php";
}
but "require" happens every time,
even if it is inside an "IF" that does not happen.
if (0)
{
/* THIS WILL SHOW ANYWAY... */
require "optional_file.php";
}
Me personally,
I use "require" to include functions, libraries, classes that I NEED to run the page.
Then I use "include" for optional things, based on "if".
<?
require "functions.inc";
if ($sunny_day)
{
include "sunny_day_message.txt";
}
?>