array_keys()

[Anon]

when using array_keys() where the value is NULL, the function is also returning the key as NULL no matter what...

is this a bug?

[[deleted]]

can you give an example, and which version of PHP are you using?

[Anon]

I also encounter problem with array_keys().

here are the source code:

$table1 = array(
"formed" => "¦¨§Î",
"liquid" => "²Gª¬",
"semi-fluid" => "¥b²Gª¬",
"semi-liquid" => "¥b²Gª¬",
"hard" => "°íµw",
"brown" => "½Å¦â",
"yellow" => "¶À¦â",
"black" => "¶Â¦â",
"tarry" => "Ãw«C¦â",
"(-)" => "-",
"(+)" => "+",
"positive" => "+",
"negative" => "-",
"(+)positive" => "+",
"(-)neg" => "-",
"0" => "F",
"1" => "M"

);	


$keys = array_keys($table1);

if (in_array("abcdefghi", $keys)) {
	printf("in array!<br>");
}

Obviously, "abcdefghi" not in the array $keys. But the program answer "in array!".
I think this is the bug of array_keys() in PHP 4.0.6.
I test this on W2k pro plateform.

[e-mail]

[[deleted]]

It turns out that the key '0' is the culprit:

$table1 = array(
"0" => 23
);

echo '<pre>';
$keys = array_keys($table1);
print_r($keys);
if (in_array("abcd", $keys))
{
echo 'in array';
}
exit;

you can solve it by adding 'true' in the in_array() function, to force a match on content AND content-type.

if (in_array("abcd", $keys, true))

now the key of the array MUST be a STRING containing abcd, and that seems to work.