CODEWITHSUNDEEP
phparraysmultidimensional-arraysize
Alex
Alex

Reputation: 7688

Count the number of byte in a multidimensional array

Having this array:

Array
(
    [_block1] => Array
        (
            [list] => Array
            (
                 [sub-list] => Array
                 (
                 )
            )
            [links] => Number
            [total] => Number
            ...
        )
    [_block2] => Array
        (
             [@attributes] => Array
             (
             )
             [title] => ...
             [data] => Array ()
             ...
        )
    [_block3] => Array
        (
             ..
        )
)

Those blocks contain data returned by api. Knowing that each api returns data in a different way/structure I need to measure/calculate the data/size inside of each and one of them and then do if data > X or < do something.

Is it possible? I have searched google but I only found count() and that isn't what I need to make this work.

Edit: Each and of the those blocks contain many other sub blocks, and I was thinking of calculating the data size in bytes, because count wont do the job here.

Upvotes: 14

Views: 39240

Answers (5)

tarkhov
tarkhov

Reputation: 354

Get array size in bytes:

<?php
$array = [1, 2, 3];
$json = json_encode($array); // JSON_PRETTY_PRINT for multiline json formatting
echo mb_strlen($json, '8bit') . " bytes\n"; // output - 7 bytes

// for multidimensional array
$array = [['a','b','c'], ['e','f','g']];
$json = json_encode($array, JSON_FORCE_OBJECT); // JSON_PRETTY_PRINT | JSON_FORCE_OBJECT for multiline json formatting
echo mb_strlen($json, '8bit') . " bytes\n"; // output - 61 bytes

Upvotes: 2

Masoud Rostami
Masoud Rostami

Reputation: 339

echo  mb_strlen(serialize((array)$arr), '8bit');

Upvotes: 33

gargAman
gargAman

Reputation: 121

To get the size in bytes you can use the below code.

$serialized = serialize($foo);
if (function_exists('mb_strlen')) {
    $size = mb_strlen($serialized, '8bit');
} else {
    $size = strlen($serialized);
}

I hope it will be helpful.

Upvotes: 6

Davide Gualano
Davide Gualano

Reputation: 13003

If I understood well your question, you need the size of each "block" subarray inside the main array.

You can do something like this:

$sizes = array();
foreach($returnedArray as $key => $content) {
    $sizes[$key] = count($content);
}

The $sizes array will be an associative array which the various "block"s as keys and the size of the data as values.

Edit: after the edit of the question, if the data inside the innermost arrays are strings or integers you can use a function like this:

function getSize($arr) {
    $tot = 0;
    foreach($arr as $a) {
        if (is_array($a)) {
            $tot += getSize($a);
        }
        if (is_string($a)) {
            $tot += strlen($a);
        }
        if (is_int($a)) {
            $tot += PHP_INT_SIZE;
        }
    }
    return $tot;
}

assuming to have only ASCII-encoded strings.

Upvotes: 16

SERPRO
SERPRO

Reputation: 10067

Do you mean something like this?

$x = 32;
foreach($blocks as $key => $block)
{
  if(getArraySize($block) < $x)
  {
     //Do Something
  }else
  {
     //Do another thing
  }
}


//Recursive function
function getArraySize($array)
{
   $size = 0;
   foreach($array as $element)
   {
      if(is_array($element))
         $size += getArraySize($element);
      else
         $size += strlen($element);
   }

   return $size;
}

Upvotes: 5

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