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PHP: global vars for normalizing the ROOT and HTTP paths of the app.
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<?php | |
// a.php: assuming this included everywhere at very first line | |
// and located in root directory | |
// preferable, define a constant instead of variable, cos it | |
// may used in functions directly without "global $ROOT"; | |
// to use for "include" | |
define('ROOT', __DIR__); // for PHP >= 5.3 | |
define('ROOT', realpath(dirname(__FILE__))); // for PHP < 5.3 | |
// to use for "src,href" | |
define('HTTP', 'http://www.mydomain.com/'); | |
// includes | |
include ROOT .'/layout_header.php'; | |
include ROOT .'/classes/mailer.php'; | |
include ROOT .'/foo/bar/baz.php'; | |
... | |
// src,href | |
printf('<img src="%s/img/lollipop.png" />', HTTP); | |
printf('<script src="%s/js/move.js" />', HTTP); | |
print '<a href="'. HTTP .'/aFolder/movement.php">Click here!</a>'; | |
... | |
// inline without global vars includes | |
define('ROOT', realpath(__DIR__ . '/../')); | |
?> |
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