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
– Ranjit Shinde, Commented Jan 10, 2017 at 7:04
i have two file docx with different mime, how to allow both of them? — Abu Ayyub
– Abu Ayyub, Commented Jan 10, 2017 at 7:10
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
– Ranjit Shinde, Commented Jan 10, 2017 at 7:13
no... but test.docx the mime is "application/vnd.openxmlformats-officedocument.wordprocessingml.document" test2.docx the mime is "application/zip" — Abu Ayyub
– Abu Ayyub, Commented Jan 10, 2017 at 7:14

Ruslan Osmanov · Accepted Answer · 2017-01-10 07:04:45Z

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, 2017 at 7:04

Ruslan Osmanov

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2 Comments

Abu Ayyub Over a year ago

i have two file docx with different mime, how to allow both of them?

Ruslan Osmanov Over a year ago

@AbuAyyub, simply use different keys for the array items

craig · Accepted Answer · 2017-01-10 08:48:59Z

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, 2017 at 8:48

answered Jan 10, 2017 at 7:32

craig

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1 Comment

Ravi Hirani Over a year ago

Very bad practice. Use array_values instead of foreach loop. Still not a recommended way. Use indexed array instead

Ravi Hirani · Accepted Answer · 2017-01-10 07:45:50Z

1

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"
);

edited Jan 10, 2017 at 7:45

answered Jan 10, 2017 at 7:13

Ravi Hirani

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Comments

Carsten Massmann · Accepted Answer · 2017-01-10 19:32:04Z

1

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

edited Jan 10, 2017 at 19:32

answered Jan 10, 2017 at 7:36

Carsten Massmann

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