Php in_array find value by key

Question

I have an array like this:

$array = Array ( [0] => Array ( [id] => 6 ) [1] => Array ( [id] => 6 ) [2] => Array ( [id] => 123 ) [3] => Array ( [id] => 123 ) )

In a cycle I use the function

$id = 123;

if (in_array($id, $array)) {
   echo "found!!";
   }
   else
   {               
   echo "not found";
   }

But doesn't works; Why?

You have nested arrays, ``in_array()`` will not check the contained arrays recursively. — user1438038, Aug 28 '15 at 09:54
possible duplicate of [in\_array() and multidimensional array](http://stackoverflow.com/questions/4128323/in-array-and-multidimensional-array) — Jonny 5, Aug 28 '15 at 10:40

score 6 · Accepted Answer · answered Aug 28 '15 at 09:50

6

It will not work because $array contains arrays as values. in_array alone will not help here. Use array_column & in_array together.

in_array($id, array_column($array, 'id'))

answered Aug 28 '15 at 09:50

Sougata Bose

Which version you are using? For lesser versions you may\ need to use a loop. – Sougata Bose Aug 28 '15 at 10:03
Now I use the 5.3; I would like to avoid nested cycles – Henry8 Aug 28 '15 at 10:13
Always prefer to use latest versions. :) – Sougata Bose Aug 28 '15 at 11:29

score -1 · Answer 2 · edited Aug 28 '15 at 14:00

-1

Just try

if (array_search($id,$a)) {
   echo "Found";
} else {
   echo "Not Found"
}

edited Aug 28 '15 at 14:00

rink.attendant.6

answered Aug 28 '15 at 09:52

SaviNuclear

2 Answers2