php loop through array - php

Question

I am trying to get certain values from an array but got stuck. Here is how the array looks:
array(2) {
[0]=>
array(2) {
["attribute_code"]=>
string(12) "manufacturer"
["attribute_value"]=>
string(3) "205"
}
[1]=>
array(2) {
["attribute_code"]=>
string(10) "silhouette"
["attribute_value"]=>
array(1) {
[0]=>
string(3) "169"
}
}
}
So from it I would like to have attribute_values, and insert it into a new array, so in this example I need 205 and 169. But the problem is that attribute_value can be array or string. This is what I have right now but it only gets me the first value - 205.
foreach ($array as $k => $v) {
$vMine[] = $v['attribute_value'];
}
What I am missing here?
Thank you!

Answer 1

If sometimes, attribute_value can be an array, and inside it the values, you can just check inside the loop (Provided this is the max level) using is_array() function. Example:
$vMine = array();
foreach ($array as $k => $v) {
if(is_array($v['attribute_value'])) { // check if its an array
// if yes merge their contents
$vMine = array_merge($vMine, $v['attribute_value']);
} else {
$vMine[] = $v['attribute_value']; // if just a string, then just push it
}
}

Answer 2

I suggest you to use array_map instead of for loop. You can try something like this..
$vMine = array_map(function($v) {
return is_array($v['attribute_value']) ? current($v['attribute_value']) : $v['attribute_value'];
}, $arr);
print '<pre>';
print_r($vMine);

Answer 3

Try the shorthand version:
foreach ($array as $k => $v) {
$vMine[] = is_array($v['attribute_value']) ? current($v['attribute_value']):$v['attribute_value'];
}
or the longer easier to understand version, both is the same:
foreach ($array as $k => $v) {
if(is_array($v['attribute_value'])) {
$vMine[] = current($v['attribute_value']);
} else {
$vMine[] = $v['attribute_value'];
}
}