note 35014 added to function.defined
| From: | adamh at densi dot com | Date: | Fri, 15 Aug 2003 14:25:28 +0000 |
| Subject: | note 35014 added to function.defined | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-54201@lists.php.net to get a copy of this message | ||
The behavior of defined() is not exactly same as isset():
$foo = null;
define("FOO", null);
if (isset($foo)) print "\$foo is set\n"; // will NOT print
if (defined("FOO")) print "FOO is defined\n"; // WILL print
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Manual Page -- http://www.php.net/manual/en/function.defined.php
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