check value exist in array with same key different value

Question

I am trying to get the true value, but result always show false, how to fix this case?

$allow = array(
    "pdf"=>"application/pdf",
    "doc"=>"application/msword",
    "docx"=>"application/vnd.openxmlformats-officedocument.wordprocessingml.document",
    "docx"=>"application/zip"
);

if (in_array("application/vnd.openxmlformats-officedocument.wordprocessingml.document",$allow)) {
    echo "true";
} else {
    echo "false";
}

In this case, I have two *.docx file but the mime type is different, how to allow both of them???

you can't define two array elements with same key, if you used same key for two array elements then latest one override to previous — Ranjit Shinde, Jan 10 '17 at 07:04
i have two file docx with different mime, how to allow both of them? — Abu Ayyub, Jan 10 '17 at 07:10
It would be better if you create multi array for same key's e.g. , `$allow = array( "pdf"=>"application/pdf", "doc"=>"application/msword", "docx"=>array("application/vnd.openxmlformats-officedocument.wordprocessingml.document", "application/zip") );` — Ranjit Shinde, Jan 10 '17 at 07:13
no... but test.docx the mime is "application/vnd.openxmlformats-officedocument.wordprocessingml.document" test2.docx the mime is "application/zip" — Abu Ayyub, Jan 10 '17 at 07:14
@Ranjith : In that case, he also need to check that whether key has array or not. All mimes in first level would be more feasible. — Ravi, Jan 10 '17 at 07:16

score 2 · Answer 1 · answered Jan 10 '17 at 07:04

2

The problem is that the array contains two items with equal keys. Namely, "application/zip" overrides "application/vnd.openxmlformats-officedocument.wordprocessingml.document". The following is the output of print_r($allow);:

Array
(
    [pdf] => application/pdf
    [doc] => application/msword
    [docx] => application/zip
)

So you should specify different key for application/zip, e.g.:

$allow = array( "pdf" => "application/pdf",
  "doc" => "application/msword",
  "docx" => "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
  "zip" => "application/zip"
);

answered Jan 10 '17 at 07:04

Ruslan Osmanov

17,894
7
38
53

i have two file docx with different mime, how to allow both of them? – Abu Ayyub Jan 10 '17 at 07:07
@AbuAyyub, simply use different keys for the array items – Ruslan Osmanov Jan 10 '17 at 07:45

Ravi · Answer 2 · 2017-01-10T07:45:50.403

I can see that keys are not important in your case. You can use indexed array instead of multidimensional array.

$allow = array("application/pdf",
               "application/msword",
               "application/vnd.openxmlformats-officedocument.wordprocessingml.document", 
               "application/zip");

If you really want to use multidimensional array then,

Use different keys for both mimes such as docx1, docx2.

$allow = array(
    "pdf"=>"application/pdf",
    "doc"=>"application/msword",
    "docx1"=>"application/vnd.openxmlformats-officedocument.wordprocessingml.document",
    "docx2"=>"application/zip"
);

craig · Accepted Answer · 2017-01-10T08:48:59.000

1

This might help you please try the below solution. You can make docx as one key value and put the mime as comma separated.

 $allow = array(
    "pdf" => "application/pdf",
    "doc" => "application/msword",
    "docx" => "application/vnd.openxmlformats-officedocument.wordprocessingml.document", "application/zip",
);

$allownew = array_values($allow);


if (in_array("application/vnd.openxmlformats-officedocument.wordprocessingml.document", $allownew))
{
    echo "true";
}
else
{
    echo "false";
}

edited Jan 10 '17 at 08:48

answered Jan 10 '17 at 07:32

craig

269
4
14

Very bad practice. Use ***array_values*** instead of foreach loop. Still not a recommended way. ***Use indexed array instead*** – Ravi Jan 10 '17 at 07:40

Carsten Massmann · Answer 4 · 2017-01-10T19:32:04.910

Maybe you should try it with a "flipped" version of the array:

$allow = array(
    "application/pdf"=>"pdf",
    "application/msword"=>"doc",
    "application/vnd.openxmlformats-officedocument.wordprocessingml.document"=>"docx",
    "application/zip"=>"docx"
  );

Now, of course, you will need to search the keys of the array, not the values like

$k="application/vnd.openxmlformats-officedocument.wordprocessingml.document";
If (array_key_exists($k,$array)) echo $array[$k]; // docx

check value exist in array with same key different value

4 Answers4