How to parse arrays with different levels PHP - php

Question

In a foreach loop i would like to compare [name] value beetween different arrays but they have not the same levels.
Array(
[array1] => Array
(
[0] => WP_Term Object
(
[name] => Plafond
)
)
[array2] => WP_Term Object
(
[name] => Chaudière
)
[array3] => Array
(
[0] => WP_Term Object
(
[name] => Pla
)
[1] => WP_Term Object
(
[name] => Toc
)
)
)
I don't know how could i get the [name] in the same loop whereas levels are different.
I have tried to make :
foreach( $fields as $name => $value )
{
echo $value->name; }
Should i add another loop in the first loop ?
thanks

Answer 1

So your data looks like this:
$json = '{"array1":[{"name":"Plafond"}],"array2":{"name":"Chaudière"},"array3":[{"name":"Pla"},{"name":"Toc"}]}';
$array = json_decode($json);
If you don't know how deep it will go, a simple recursive function should work. Perhaps something like this:
function get_name($o, &$output) {
if (is_array($o)) {
foreach($o as $v) {
get_name($v, $output);
}
} elseif (property_exists($o, "name")) {
$output[] = $o->name;
}
}
$output = [];
foreach ($array as $v) {
get_name($v, $output);
}
If you data is going to look like the sample you provided (i.e. it will always be first or second level) then you don't need to worry about recursion.
$output = [];
foreach ($array as $k=>$v) {
if (is_array($v)) {
foreach ($v as $k2=>$v2) {
$output[] = $v2->name;
}
} else {
$output[] = $v->name;
}
}
Either way, your output values are all in the $output array:
print_r($output);
Output:
Array
(
[0] => Plafond
[1] => Chaudière
[2] => Pla
[3] => Toc
)

Answer 2

You can use array_map, array_key_exists to retrive the name index from the array
$jsonFormat = '{"array1":[{"name":"Plafond"}],"array2":{"name":"Chaudière"},"array3":[{"name":"Pla"},{"name":"Toc"}]}';
$jsonArray = json_decode($jsonFormat,true);
$res = [];
array_map(function($v) use (&$res){
if(array_key_exists('name', $v)){
$res[] = $v['name'];
}else{
foreach($v as $_key => $_value){
$res[] = $_value['name'];
}
}
}, $jsonArray);
echo '<pre>';
print_r($res);
Result:-
Array
(
[0] => Plafond
[1] => Chaudière
[2] => Pla
[3] => Toc
)
You can use $res to compare the names.