How do I get values from this array? PHP - php

Question

Very much new to PHP and completely stuck because of #attributes when trying to pick values out of an array. I have previously converted an xml file into a associative array.
print_r(array_keys($newArray));
Prints:
Array ( [0] => #attributes [1] => rate )
print_r ($newArray);
Prints:
Array (
[#attributes] => Array (
[base] => GBP
[ts] => 1572881347 )
[rate] => Array (
[0] => Array (
[#attributes] => Array (
[code] => AED
[rate] => 4.739532203531
[live] => 0
)
)
[1] => Array (
[#attributes] => Array (
[code] => AFN
[rate] => 100.80144337913
[live] => 0
)
)
[2] => Array (
[#attributes] => Array (
[code] => ALL
[rate] => 142.29721877018
[live] => 0
)
)
[3] => Array (
[#attributes] => Array (
[code] => AMD
[rate] => 614.98298701028
[live] => 0
)
)
How would I specify and print the last value?
[3] => Array ( [#attributes] => Array ( [code] => AMD [rate] => 614.98298701028 [live] => 0.
With the goal to output something like: AMD, 614.98298701028, 0
Thanks

Answer 1

More generally, if you'd want to look-up a currency in your array, you could use following recursive function:
$code = 'AMD'; // set the curncy you want to lookup
forex($code, $newArray); // invoke the recursive function
// output:
//code : AMD
//rate : 614.98298701028
function forex(string $code = '', array $arr = []): void
{
foreach ($arr as $key => $value) {
if (is_array($value) && $key !== '#attributes') {
forex($code, $value);
} else {
if (isset($value['code']) && $value['code'] == $code) {
echo 'code : ' . $value['code'];
echo '<br />';
echo 'rate : ' . $value['rate'];
echo '<br />';
}
}
}
}
working demo

Answer 2

Assuming that your original array is something like this:
$a = array(
'#attributes' => array(
'base' => 'GBP',
'ts' => 1572881347),
'rate' => array(
0 => array(
'#attributes' => array(
'code' => 'AED',
'rate' => 4.739532203531,
'live' => 0,
),
),
1 => array(
'#attributes' => array(
'code' => 'AFN',
'rate' => 100.80144337913,
'live' => 0,
),
),
2 => array(
'#attributes' => array(
'code' => 'ALL',
'rate' => 142.29721877018,
'live' => 0,
),
),
3 => array(
'#attributes' => array(
'code' => 'AMD',
'rate' => 614.98298701028,
'live' => 0,
),
)));
then you can get what you want with this:
$last_rate = sizeof($a['rate']) - 1;
foreach ($a['rate'][$last_rate]['#attributes'] as $key => $value) {
echo "$value ";
}
Which will output:
AMD 614.98298701028 0

Answer 3

If your array will always contain the array values under rate, you can retrieve the last element of the rate array by using end($newArray['rate']).
To output a CSV style string you can simply use implode(', ', $last['#attributes']) or another desired method, such as foreach, to display the values from the last element.
Example: https://3v4l.org/FNuuZ
if ($last = end($newArray['rate'])) {
echo implode(', ', $last['#attributes']);
}
Result:
AMD, 614.98298701028, 0