#39764 [Opn->Fbk]: array_key_exists inconsistent behavior

ID: 39764 Updated by: tony2001@php.net Reported By: techtonik@php.net -Status: Open +Status: Feedback Bug Type: Arrays related Operating System: Windows2000 PHP Version: 4.4.4 New Comment: >If even experienced developers who write the manual tend >to make this kind of "mistakes" then what should we >expect from other users? Well, nobody's perfect and even experienced developers make mistakes. But that doesn't mean these mistakes should become a rule. >From the other side if we assume that PHP is OO language >then it should be indifferent to the type of object used >as array key as long as the object can be hashed and >compared to others. IIRC that is the way it works for >Python and Java (toString() method). While I can agree, that resources should have been objects and even the resource type should not exist, this is what we have to live with. Objects DO have __toString() method (and you cannot use an object as a key without implementing this method in 5.2+), but resources are different. So I would actually change the E_STRICT error to E_NOTICE, as it doesn't make much sense to me to use an internal resource identifier as a key. This internal ID might be reused or another resource with different ID might exist pointing to the same physical resource (connection, structure etc.). Previous Comments: ------------------------------------------------------------------------ [2006-12-07 12:56:30] techtonik@php.net If even experienced developers who write the manual tend to make this kind of "mistakes" then what should we expect from other users? From the other side if we assume that PHP is OO language then it should be indifferent to the type of object used as array key as long as the object can be hashed and compared to others. IIRC that is the way it works for Python and Java (toString() method). ------------------------------------------------------------------------ [2006-12-07 12:35:30] tony2001@php.net Why do you promote bad code in the docs? This code sample is wrong and should be fixed in order to avoid using special types as array keys. ------------------------------------------------------------------------ [2006-12-07 12:27:01] techtonik@php.net For resource-dependent array data. Configuration or state information, whatever. For example - http://www.php.net/xml#AEN211968 ------------------------------------------------------------------------ [2006-12-07 10:50:55] tony2001@php.net Name at least one reason why do you need to use resource as array keys. >E_STRICT is turned off in PHP5 Yes, it can be turned off, as well as E_WARNING. ------------------------------------------------------------------------ [2006-12-07 10:41:54] techtonik@php.net "Expected result" and "Actual result" should be switched. Sorry for confusion. ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/39764 -- Edit this bug report at http://bugs.php.net/?id=39764&edit=1