Need to find array of array with specific key

Question

I need to count the times a key/variable is shown inside an array of arrays.

The array looks like this:

Array 
{ 
[3] => Array
{
[type]=>group
[name]=>3st group
[newmsgs]=>3
}
[2] => Array
{
[type]=>group
[name]=>2nd group
}
[1] => Array
{
[type]=>group
[name]=>1st group
[newmsgs]=>1
}
}

I am looking for a function that runs and returns 2 since there are only 2 arrays that have the 'newmsgs' key with value.

I've tried array_count_values() without success, as well as trying a simple count() which I knew has a slim chance of working.

Any idea of how to do this?

AbraCadaver · Accepted Answer · 2016-07-04 18:12:53Z

1

Extract the column you want and count them:

$count = count(array_column($array, 'newmsgs'));

answered Jul 4, 2016 at 18:12

AbraCadaver

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3 Comments

Yohio Over a year ago

Thank you AbraCadaver, this works perfectly too! just had to test and see if this work as it seems a little simpler than u_mulder and it works as well. Thanks!

AbraCadaver Over a year ago

I'm not AbraCadaver_da_boss? :-(

Yohio Over a year ago

I would say AbraCadaver_da_king :D

u_mulder · Accepted Answer · 2016-07-04 17:59:57Z

1

Mix of array_filter and sizeof:

echo sizeof(array_filter($array, function($v) { return !empty($v['newmsgs']); } ));

array_filter will return array of elements where newmsgs key is set, and sizeof will get size of this returned array.

answered Jul 4, 2016 at 17:59

u_mulder

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1 Comment

Yohio Over a year ago

u_mulder, you should update your name to u_mulder_da_boss. This worked perfectly and is elegant! Thank you!

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