Get all Data in a Body using Guzzle in Laravel from External API - laravel

Question

I want to retrieve only the email in a JSON response using guzzle in Laravel from an external API. Here is what I have tried
//Get all customer
$allcus = 'https://api.paystack.co/customer';
$client = new Client();
$response = $client->request('GET', $allcus, [
'headers' => [
'Authorization' => 'Bearer '.'sk_live_#########################',
],
]);
$cus_data = json_decode($response->getBody()->getContents());
//returns a json response of all customers
//dd($cus_data);
$cus_data_email = $cus_data->data->email;
dd($cus_data_email);
Using this returns error
$cus_data_email = $cus_data->data->email;
"message": "Trying to get property 'email' of non-object"
But when I tried this, it returns the customer in the first array
$cus_data_email = $cus_data->data[0]->email;
I don't want to return just one customer email. I want to retrieve all of the customers' emails.
This is the way the JSON response is
{
"status": true,
"message": "Customers retrieved",
"data": [
{
"integration": ######,
"first_name": null,
"last_name": null,
"email": "a###$gmail.com",
"phone": null,
"metadata": null,
"domain": "live",
"customer_code": "CUS_##########",
"risk_action": "default",
"id": #######,
"createdAt": "2020-05-26T00:50:12.000Z",
"updatedAt": "2020-05-26T00:50:12.000Z"
},
...

Answer 1

What you're looking for is a loop!
$cus_data->data is an array, which is a variable that can store multiple values at once. These can be accessed with an index, and are commonly seen with loops.
I highly suggest reading the two links I supplied, the loop I'll be using is a foreach loop, as it's the most readable in this context. All the loops have their place, so it would pay to get familiar with them.
$emailsArray = []; // initialise an array
$emailsString = ""; // initialise a string
// Here's our loop, which will go over all the values of $cus_data->data
foreach($cus_data->data as $datum) {
// $datum is the single value in $cus_data->data which we're currently looking at
// Each of these values have an email property, which we access with arrow notation
array_push($emailsArray, $datum->email); // add the email to our array
$emailsString = $emailsString . $datum->email . ", "; // add the email to our string
}
Following this, $emailsArray will be an array (like we learned about above!) with all the emails from $cus_data->data.
$emailsString will contain the same information, just in a comma-separated string.
One thing to watch out for is if some of your data doesn't have emails! Then the code above could fail.
Admittedly, this isn't the shortest solution. For a problem like this, I would probably use array_map. The code here does the same thing in a more verbose format so we can understand it better.