ID: 13874
User updated by: [EMAIL PROTECTED]
Reported By: [EMAIL PROTECTED]
Status: Bogus
Bug Type: Unknown/Other Function
Operating System: ALL
PHP Version: 4.0.6
New Comment:
understood. However there is still no effective way to check if a key exists in an
array !!!
Maybe my title should have been different ... for the real problem see my sample ...
Previous Comments:
------------------------------------------------------------------------
[2001-10-30 11:42:42] [EMAIL PROTECTED]
Not a bug. Intended behaviour. isset() returns false on variables with a NULL value.
Documentation is being worked on.
------------------------------------------------------------------------
[2001-10-30 11:23:43] [EMAIL PROTECTED]
There's no good way to check weather a key exists in an associative array.
The problem is that if the key exists, but the value is null, is treated the
same as if the key doesn't exist.
The only way I figure is to check: in_array("key", array_keys($array))
but this seams rather expensive.
(Compare: perl has an "exists" function ...)
Sample:
$sample = array("a" => "a", "b" => NULL);
print ":".isset($sample['a'])."<br>\n";
print ":".isset($sample['b'])."<br>\n";
print ":".isset($sample['c'])."<br>\n";
print ":".in_array("a", array_keys($sample))."<br>\n";
print ":".in_array("b", array_keys($sample))."<br>\n";
print ":".in_array("c", array_keys($sample))."<br>\n";
------------------------------------------------------------------------
Edit this bug report at http://bugs.php.net/?id=13874&edit=1
--
PHP Development Mailing List <http://www.php.net/>
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
To contact the list administrators, e-mail: [EMAIL PROTECTED]
