Edit report at https://bugs.php.net/bug.php?id=64854&edit=1
ID: 64854
Comment by: ni...@php.net
Reported by: bensor987 at neuf dot fr
Summary: array_key_exists( array('key1', 'key2', 'key3'),
$array);
Status: Wont fix
Type: Feature/Change Request
Package: Arrays related
Operating System: All
PHP Version: Irrelevant
Block user comment: N
Private report: N
New Comment:
Sure, that's why I said that it only applies to arrays "with no odd null-value
usages". You used $_GET and $_POST as examples in your FR, both of which can
only contain string and array values (no nulls). Thus for them multi-parameter
isset() is sufficient. That's why I asked whether you have any other particular
use cases in mind.
Previous Comments:
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[2013-05-16 11:23:15] bensor987 at neuf dot fr
isset() doesn't behave like array_key_exists(). It will sometimes return false
when the key exists. I want the result to be as realist as possible.
Example :
$array = array( 'key_null' => NULL );
var_dump( isset( $array['key_null'] ) );
var_dump( array_key_exists( 'key_null', $array ) );
Output : bool(false) bool(true).
------------------------------------------------------------------------
[2013-05-16 10:49:05] ni...@php.net
For "normal" arrays (with no odd null-value usages), you can just use isset for
this. E.g. isset($_GET['foo'], $_GET['bar'], $_GET['baz']).
I think accepting an array for array_key_exists is not very clear, because it
could mean either "one of the keys exists" or "all of the keys exist".
Marking as Wfx, unless some clearer examples for use cases come up ;)
------------------------------------------------------------------------
[2013-05-16 07:44:48] bensor987 at neuf dot fr
Description:
------------
Why can't we give an array as the first parameter of array_key_exists() ? I
have a few cases where it would be useful. Especially when checking $_POST,
$_GET or $_REQUEST arrays (for instance).
Test script:
---------------
$array_to_test = array( 'key1' => 1, 'key2' => 1, 'key3' => 1 );
$array_keys = array( 'key1', 'key2', 'key3');
var_dump( array_key_exists( $array_keys, $array_to_test ) );
var_dump( (array_key_exists( 'key1', $array_to_test ) && array_key_exists(
'key2', $array_to_test ) && array_key_exists( 'key3', $array_to_test )) );//
The same as above, but much longer.
Expected result:
----------------
bool(true) bool(true)
Actual result:
--------------
bool(false) bool(true)
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Edit this bug report at https://bugs.php.net/bug.php?id=64854&edit=1
