Php construct object from string

php — Constructing an object with a variable chain of properties from a string

I am trying to write a function that retrieves specific data via cURL. The problem I am running into is that I want the data retrieved to be resolved within the function itself and then returned, rather than obtaining the curl response via the function and THEN retrieving the data outside of the function.

It’s somewhat difficult to explain, however to put it simply, here is essentially what I have been doing up until now:

$response = getData(); // pretend this retrieves a bunch of decoded JSON data from a website via cURL $data[] = $response->july->value; // this data is retrieved outside of the getData function $data[] = $response->info->folders->data->key Copy code

But what I’d like to do is something like this:

$data = getData([ "[RESPONSE]->july->value", "[RESPONSE]->info->folders->data->key" ]); Copy code

Where [RESPONSE] in the two strings would get replaced with the cURL response within the getData function and just return me the results I want (as $data[0] and $data[1], or however many arguments I pass to the function).

The problem with this is that once I turn the two example arguments above into strings, they are no longer objects — Is there a way to build them back up within the function and retrieve the data I want?

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php — Dynamically construct object selection based on string

Considering I have a string entity.field_one.field_two.value , how can I take this and construct a selection on an existing PHP object? Based on the string above I want to construct:

$output = $entity->field_one->field_two->value; Copy code

I’m aware that I can use variables like $entity-> but considering I don’t know how many dots there are going to be, I need to find a way to construct the whole thing dynamically.

Answer

Solution:

How to access and manipulate multi-dimensional array by key names / path? shows how to do this for nested array elements. You can use a similar method for object properties.

function get($path, $object) < if (is_string($path)) < $path = explode('.', $path); >$temp =& $object; foreach($path as $key) < $temp =& $temp->; > return $temp; > echo get("field_one.field_two.value", $entity); Copy code

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PHP

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