Array to string in array

Question

This is my array, but some values are empty array and i want to convert them into empty strings, but i'm not sure how. Try some solutions, but "can't convert array to string".

array(1) {
      [0]=>
      array(32) {
        ["product_id"]=>
        string(2) "30"
        ["name"]=>
        string(12) "Canon EOS 5D"
        ["model"]=>
        string(9) "Product 3"
        ["sku"]=>
        array(0) {
        }
        ["upc"]=>
        array(0) {
        }
        ["ean"]=>
        array(0) {
        }
        ["jan"]=>
        array(0) {
        }
        ["manufacturer_id"]=>
        string(1) "9"
        ["tax_class_id"]=>
        string(1) "9"
        ["points"]=>
        string(1) "0"
        ["quantity"]=>
        string(1) "7"
        ["minimum"]=>
        string(1) "1"
        ["isbn"]=>
        array(0) {
        }
        ["mpn"]=>
        array(0) {
        }
        ["stock_status_id"]=>
        string(1) "6"
      }

But i want these:

["sku"]=>
        array(0) {
        }
        ["upc"]=>
        array(0) {
        }
        ["ean"]=>
        array(0) {
        }
        ["jan"]=>
        array(0) {
        }

to looks like this:

["sku"]=>
        string(0) ""
        ["upc"]=>
        string(0) ""
        ["ean"]=>
        string(0) ""
        ["jan"]=>
        string(0) ""

a.k.a empty string, not arrays. That's it. Maybe some check if is empty array to convert to string, i'm not sure. Thank u!

just iterate over your array and check if the nested array is empty, then put an empty string in place of that — RAUSHAN KUMAR
– RAUSHAN KUMAR, Commented Jun 28, 2017 at 13:55

Dmitriy Suniaikin · Accepted Answer · 2017-06-28 15:23:04Z

1

    foreach ($products['shopproduct'] as $product) {
        foreach ($product as $k => $v) {
            if (empty($v)) {
                $product[$k] = '';
            }
        }
    }
    echo "<pre>";
    var_dump($products['shopproduct']);

The problem you're working with copy ($product) of an array in foreach. You can use ampersand for reference like

foreach ($products['shopproduct'] as &$product) {
...

or

    foreach ($products['shopproduct'] as $j => $product) {
        foreach ($product as $k => $v) {
            if (empty($v)) {
                $products['shopproduct'][$j][$k] = '';
            }
        }
    }

answered Jun 28, 2017 at 15:23

Dmitriy Suniaikin

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5 Comments

MorganFreeFarm Over a year ago

Lol .. thank u, sir ! Can u explain me foreach ($products['shopproduct'] as &$product) { ...

Dmitriy Suniaikin Over a year ago

What exactly to explain?

MorganFreeFarm Over a year ago

&$product < this one

Dmitriy Suniaikin Over a year ago

This is standart reference in php. All php variables have they own place in memory. When you're using $product in foreach without & then array value of $products['shopproduct'][$j] is copied to $product variable and original array is not touched. When you're using ampersand then $products['shopproduct'][$j] value is not copied, but only reference to it in $product variable. So you can work with original array value.

Dmitriy Suniaikin Over a year ago

try something like code.stephenmorley.org/php/references-tutorial

Loko · Accepted Answer · 2017-06-28 13:58:53Z

1

Just replace it with an empty string when the value is empty.

foreach($array as $k=>$v){
    if(empty($v)){
        $array[$k]='';
    }
}

answered Jun 28, 2017 at 13:58

Loko

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Comments

Bhunesh Satpada · Accepted Answer · 2017-06-28 13:59:43Z

1

Use array_map. Check below code:

$array2 = array_map(function($value) {
   return count($value) == 0 ? "" : $value;
}, $array);

answered Jun 28, 2017 at 13:59

Bhunesh Satpada

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