Count value of key in array

Question

I have this array:

Array
(
    [boks_1] => Array
        (
            [tittel] => Test
            [innhold] => &nbsp;    This is a test text
            [publish] => 2
        )

    [boks_2] => Array
        (
            [tittel] => Test 3
            [innhold] => This is a text test
            [publish] => 1
        )

    [boks_3] => Array
        (
            [tittel] => Kontakt oss
            [innhold] => This is a test text
            [publish] => 1
        )
)

How can I use PHP count() to count how many times [publish] => 1 appears in my array? I am going to use the value to control the width of divs in a flexbox container.

You can't simply use the count() function, you will need to loop through the array and increment a counter. — Pitchinnate
– Pitchinnate, Commented Apr 7, 2016 at 15:35

AbraCadaver · Accepted Answer · 2016-12-07 18:34:51Z

6

For fun:

$count = array_count_values(array_column($array, 'publish'))[1];

Get an array of the publish keys
Count the values
Get the count of the 1s using index [1]

O.K. more fun:

$count = count(array_keys(array_column($array, 'publish'), 1));

Get an array of the publish keys
Get array keys where the value is 1
Count the array

NOTE: You might want to pass true as the third argument to array_keys() to be more accurate and use '1' instead of 1 if the 1s are strings and not integers.

edited Dec 7, 2016 at 18:34

answered Apr 7, 2016 at 15:43

AbraCadaver

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5 Comments

Rasclatt Over a year ago

Just a question, what is the , 1) in array_count_values doing? I don't see it in the documentation as having a second parameter? That supposed to be part of the array_column() I think?

Rasclatt Over a year ago

So array_column($array, 'publish', 1) instead of array_column($array, 'publish'), 1)?'

AbraCadaver Over a year ago

@Rasclatt: That was a typo, deleted.

Rasclatt Over a year ago

Yeah I figured as much, but I thought I would ask incase it was some legacy thing that I didn't know about, I learn a lot from other peoples answers, like array_column() for instance, I normally use a loop, to accomplish the same task, so now I know better!

AbraCadaver Over a year ago

Added more fun since you called me back here :-) That may have been where the , 1) came from earlier.

ameenulla0007 · Accepted Answer · 2016-04-07 15:53:01Z

3

$newArray = array_filter($booksArray, function($bookDet) { if($bookDet["publish"]==1) { return $bookDet; } });
$getCount = count($newArray);

use array_filter to filter out only required array details, and get a count of it.

this could be the simplest, and performance oriented as well, as it won't loop.

edited Apr 7, 2016 at 15:53

answered Apr 7, 2016 at 15:39

ameenulla0007

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2 Comments

Jimmmy Over a year ago

you have double $ sign before newArray var, which will return 0(zero) always as count..

AbraCadaver Over a year ago

Nice with array_filter(), but == will return for true and some strings. Maybe function($v) { return $v['publish'] === 1; } or if string === '1'.

Unex · Accepted Answer · 2016-04-07 15:41:05Z

1

this should solve your problem :

$array = array(); //This is your data sample

$counter = 0; //This is your counter
foreach ($array as $key => $elem) {
    if (array_key_exists('publish', $elem) && $elem['publish'] === 1) {
        $counter += $elem['publish'];
    }
}

hope this'll help,

edited Apr 7, 2016 at 15:41

answered Apr 7, 2016 at 15:39

Unex

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2 Comments

ameenulla0007 Over a year ago

went wrong with the question, OP is asking particular count of publish==1

Unex Over a year ago

yeah i forgot the condition, so i updated ;). But your solution is cleaner than mine.

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