On Thu, 26 Jul 2001, Marc Delisle wrote:
Hi Jeremy,
from the PHP manual:
require() is not actually a function in PHP; rather, it is a language construct. It is subject to some different rules than functions are. For instance, require() is not subject to any containing control structures.
Unlike include(), require() will always read in the target file, even if the line it's on never executes. If you want to conditionally include a file, use include(). The conditional statement won't affect the require(). However, if the line on which the require() occurs is not executed, neither will any of the code in the target file be executed.
If I understand correctly the manual, this code won't work:
if (!defined('__HEADER_INC__')) require("./header.inc.php3");
Marc
However, this will:
if (!defined('__HEADER_INC__')) { require("./header.inc.php3"); };
The only problem is that variables defined in header.inc.php3 and not in the require()ing file won't be visible outside of the braces.