loops-so/loops

The official Loops PHP client.

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github.com/Loops-so/loops-php

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v0.1.0 2025-03-24 08:55 UTC

Requires

Requires (Dev)

MIT 11f868d81383f6c95978d32921cfbfba36b6a0cb

This package is auto-updated.

Last update: 2025-04-01 12:50:14 UTC

README

Packagist Total Downloads

Introduction

This is the official PHP package for Loops, an email platform for modern software companies.

Installation

Install the Loops package using Composer:

composer require loops-so/loops

Usage

You will need a Loops API key to use the package.

In your Loops account, go to the API Settings page and click Generate key.

Copy this key and save it in your application code (for example, in an environment variable).

See the API documentation to learn more about rate limiting and error handling.

To use the package, first initialise the client with your API key, then you can call one of the methods.

API rate limits can be handled with the included RateLimitExceededError exception.

use Loops\LoopsClient;

$loops = new LoopsClient(env('LOOPS_API_KEY'));

// Test API key
$result = $loops->apiKey->test();

// Create a contact and catch errors
try {
    $result = $loops->contacts->create('user@example.com', [
      'firstName' => 'John'
    ]);
} catch (Loops\Exceptions\APIError $e) {
    // Handle API errors (400, 401, 403, etc)
    echo $e->getMessage();
    $returnedJson = $e->getJson(); // JSON returned by the API
    $statusCode = $e->statusCode(); // HTTP status code from the response
} catch (\Exception $e) {
    // Handle any other unexpected errors
    echo "Unexpected error: " . $e->getMessage();
}

Handling rate limits

You can use the check for rate limit issues with your requests.

You can access details about the rate limits from the getLimit and getRemaining functions.

try {
    $result = $loops->contacts->create('user@example.com', [
      'firstName' => 'John'
    ]);
} catch (Loops\Exceptions\RateLimitExceededError $e) {
    // Handle rate limiting
    echo "Rate limit hit. Limit: " . $e->getLimit() . ", requests remaining: " . $e->getRemaining();
} catch (Loops\Exceptions\APIError $e) {
    // Handle API errors (400, 401, 403, etc)
    echo $e->getMessage();
} catch (\Exception $e) {
    // Handle any other unexpected errors
    echo "Unexpected error: " . $e->getMessage();
}

Default contact properties

Each contact in Loops has a set of default properties. These will always be returned in API results.

  • id
  • email
  • firstName
  • lastName
  • source
  • subscribed
  • userGroup
  • userId

Custom contact properties

You can use custom contact properties in API calls. Please make sure to add custom properties in your Loops account before using them with the SDK.

Methods

apiKey->test()

Test if your API key is valid.

API Reference

Parameters

None

Example

$result = $loops->apiKey->test();

Response

This method will return a success or error message:

{
  "success": true,
  "teamName": "Company name"
}
{
  "error": "Invalid API key"
}

contacts->create()

Create a new contact.

API Reference

Parameters

Name Type Required Notes
$email string Yes If a contact already exists with this email address, an APIError will be thrown.
$properties array No An array containing default and any custom properties for your contact.
Please add custom properties in your Loops account before using them with the SDK.
Values can be of type string, number, null (to reset a value), boolean or date (see allowed date formats).
$mailing_lists array No An array of mailing list IDs and boolean subscription statuses.

Examples

$result = $loops->contacts->create("hello@gmail.com");

$contact_properties = [
  'firstName' => "Bob" /* Default property */,
  'favoriteColor' => "Red" /* Custom property */,
];
$mailing_lists = [
  'cm06f5v0e45nf0ml5754o9cix' => TRUE,
  'cm16k73gq014h0mmj5b6jdi9r' => FALSE,
];
$result = $loops->contacts->create(
  "hello@gmail.com",
  properties: $contact_properties,
  mailing_lists: $mailing_lists
);

Response

{
  "success": true,
  "id": "id_of_contact"
}

Error handling is done through the APIError class, which provides getStatusCode() and getJson() methods for retrieving the API's error response details. For implementation examples, see the Usage section.

// HTTP 400 Bad Request
{
  "success": false,
  "message": "An error message here."
}

contacts->update()

Update a contact.

Note: To update a contact's email address, the contact requires a userId value. Then you can make a request with their userId and an updated email address.

API Reference

Parameters

Name Type Required Notes
$email string Yes The email address of the contact to update. If there is no contact with this email address, a new contact will be created using the email and properties in this request.
$properties array No An array containing default and any custom properties for your contact.
Please add custom properties in your Loops account before using them with the SDK.
Values can be of type string, number, null (to reset a value), boolean or date (see allowed date formats).
$mailing_lists array No An array of mailing list IDs and boolean subscription statuses.

Example

$contact_properties = [
  'firstName' => 'Bob', /* Default property */
  'favoriteColor' => 'Blue' /* Custom property */
];
$response = $loops->contacts->update(
  'hello@gmail.com',
  properties: $contact_properties
);

// Updating a contact's email address using userId
$results = $loops->contacts->update(
  'newemail@gmail.com',
  properties: [
    'userId' => '1234'
  ]
);

Response

{
  "success": true,
  "id": "id_of_contact"
}

Error handling is done through the APIError class, which provides getStatusCode() and getJson() methods for retrieving the API's error response details. For implementation examples, see the Usage section.

// HTTP 400 Bad Request
{
  "success": false,
  "message": "An error message here."
}

contacts->find()

Find a contact.

API Reference

Parameters

You must use one parameter in the request.

Name Type Required Notes
$email string No
$user_id string No

Examples

$result = $loops->contacts->find('hello@gmail.com');

$result = $loops->contacts->find(user_id: '12345');

Response

This method will return a list containing a single contact object, which will include all default properties and any custom properties.

If no contact is found, an empty list will be returned.

[
  {
    "id": "cll6b3i8901a9jx0oyktl2m4u",
    "email": "hello@gmail.com",
    "firstName": "Bob",
    "lastName": null,
    "source": "API",
    "subscribed": true,
    "userGroup": "",
    "userId": "12345",
    "mailingLists": {
      "cm06f5v0e45nf0ml5754o9cix": true
    },
    "favoriteColor": "Blue" /* Custom property */
  }
]

contacts->delete()

Delete a contact.

API Reference

Parameters

You must use one parameter in the request.

Name Type Required Notes
$email string No
$user_id string No

Example

$result = $loops->contacts->delete('hello@gmail.com')

$result = $loops->contacts->delete(user_id: '12345')

Response

{
  "success": true,
  "message": "Contact deleted."
}

Error handling is done through the APIError class, which provides getStatusCode() and getJson() methods for retrieving the API's error response details. For implementation examples, see the Usage section.

// HTTP 400 Bad Reuqest
{
  "success": false,
  "message": "An error message here."
}
// HTTP 404 Not Found
{
  "success": false,
  "message": "An error message here."
}

contactProperties->create()

Create a new contact property.

API Reference

Parameters

Name Type Required Notes
$name string Yes The name of the property. Should be in camelCase, like planName or favouriteColor.
$type string Yes The property's value type.
Can be one of string, number, boolean or date.

Examples

$result = $loops->contactProperties->create("planName", "string");

Response

{
  "success": true
}

Error handling is done through the APIError class, which provides getStatusCode() and getJson() methods for retrieving the API's error response details. For implementation examples, see the Usage section.

// HTTP 400 Bad Request
{
  "success": false,
  "message": "An error message here."
}

contactProperties->get()

Get a list of your account's contact properties.

API Reference

Parameters

Name Type Required Notes
$list string No Use "custom" to retrieve only your account's custom properties.

Example

$result = $loops->contactProperties->get();

$result = $loops->contactProperties->get("custom");

Response

This method will return a list of contact property objects containing key, label and type attributes.

[
  {
    "key": "firstName",
    "label": "First Name",
    "type": "string"
  },
  {
    "key": "lastName",
    "label": "Last Name",
    "type": "string"
  },
  {
    "key": "email",
    "label": "Email",
    "type": "string"
  },
  {
    "key": "notes",
    "label": "Notes",
    "type": "string"
  },
  {
    "key": "source",
    "label": "Source",
    "type": "string"
  },
  {
    "key": "userGroup",
    "label": "User Group",
    "type": "string"
  },
  {
    "key": "userId",
    "label": "User Id",
    "type": "string"
  },
  {
    "key": "subscribed",
    "label": "Subscribed",
    "type": "boolean"
  },
  {
    "key": "createdAt",
    "label": "Created At",
    "type": "date"
  },
  {
    "key": "favoriteColor",
    "label": "Favorite Color",
    "type": "string"
  },
  {
    "key": "plan",
    "label": "Plan",
    "type": "string"
  }
]

mailingLists->get()

Get a list of your account's mailing lists. Read more about mailing lists

API Reference

Parameters

None

Example

$result = $loops->mailingLists->get();

Response

This method will return a list of mailing list objects containing id, name, description and isPublic attributes.

If your account has no mailing lists, an empty list will be returned.

[
  {
    "id": "cm06f5v0e45nf0ml5754o9cix",
    "name": "Main list",
    "description": "All customers.",
    "isPublic": true
  },
  {
    "id": "cm16k73gq014h0mmj5b6jdi9r",
    "name": "Investors",
    "description": null,
    "isPublic": false
  }
]

events->send()

Send an event to trigger an email in Loops. Read more about events

API Reference

Parameters

Name Type Required Notes
$event_name string Yes
$email string No The contact's email address. Required if $user_id is not present.
$user_id string No The contact's unique user ID. If you use $user_id without $email, this value must have already been added to your contact in Loops. Required if $email is not present.
$contact_properties array No An array containing contact properties, which will be updated or added to the contact when the event is received.
Please add custom properties in your Loops account before using them with the SDK.
Values can be of type string, number, null (to reset a value), boolean or date (see allowed date formats).
$event_properties array No An array containing event properties, which will be made available in emails that are triggered by this event.
Values can be of type string, number, boolean or date (see allowed date formats).
$mailing_lists array No An array of mailing list IDs and boolean subscription statuses.

Examples

$result = $loops->events->send(
  'signup',
  email: 'hello@gmail.com'
);

$result = $loops->events->send(
  'signup',
  email: 'hello@gmail.com',
  event_properties: [
    'username' => 'user1234',
    'signupDate' => '2024-03-21T10:09:23Z'
  ],
  mailing_lists: [
    'cm06f5v0e45nf0ml5754o9cix' => true,
    'cm16k73gq014h0mmj5b6jdi9r' => false
  ]
;

# In this case with both email and userId present, the system will look for a contact with either a
#  matching `email` or `user_id` value.
# If a contact is found for one of the values (e.g. `email`), the other value (e.g. `user_id`) will be updated.
# If a contact is not found, a new contact will be created using both `email` and `user_id` values.
# Any values added in `contact_properties` will also be updated on the contact.
$result = $loops->events->send(
  'signup',
  email: 'hello@gmail.com',
  user_id: '1234567890',
  contact_properties: [
    'firstName' => 'Bob',
    'plan' => 'pro',
  }]
});

Response

{
  "success": true
}

Error handling is done through the APIError class, which provides getStatusCode() and getJson() methods for retrieving the API's error response details. For implementation examples, see the Usage section.

// HTTP 400 Bad Request
{
  "success": false,
  "message": "An error message here."
}

transactional->send()

Send a transactional email to a contact. Learn about sending transactional email

API Reference

Parameters

Name Type Required Notes
$transactional_id string Yes The ID of the transactional email to send.
$email string Yes The email address of the recipient.
$add_to_audience boolean No If true, a contact will be created in your audience using the $email value (if a matching contact doesn’t already exist).
$data_variables array No An array containing data as defined by the data variables added to the transactional email template.
Values can be of type string or number.
$attachments array[] No A list of attachments objects.
Please note: Attachments need to be enabled on your account before using them with the API. Read more
$attachments[]["filename"] string No The name of the file, shown in email clients.
$attachments[]["content_type"] string No The MIME type of the file.
$attachments[]["data"] string No The base64-encoded content of the file.

Examples

$result = $loops->transactional->send(
  transactional_id: 'clfq6dinn000yl70fgwwyp82l',
  email: 'hello@gmail.com',
  data_variables: [
    'loginUrl' => 'https://myapp.com/login/',
  ]
);

# Please contact us to enable attachments on your account.
$result = $loops->transactional->send(
  transactional_id: 'clfq6dinn000yl70fgwwyp82l',
  email: 'hello@gmail.com',
  data_variables: [
    'loginUrl' => 'https://myapp.com/login/',
  ],
  attachments: [
    [
      'filename' => 'presentation.pdf',
      'content_type' => 'application/pdf',
      'data' => base64_encode(file_get_contents('path/to/presentation.pdf'))
    ]
  ]
);

Response

{
  "success": true
}

Error handling is done through the APIError class, which provides getStatusCode() and getJson() methods for retrieving the API's error response details. For implementation examples, see the Usage section.

If there is a problem with the request, a descriptive error message will be returned:

// HTTP 400 Bad Request
{
  "success": false,
  "path": "dataVariables",
  "message": "There are required fields for this email. You need to include a 'dataVariables' object with the required fields."
}
// HTTP 400 Bad Request
{
  "success": false,
  "error": {
    "path": "dataVariables",
    "message": "Missing required fields: login_url"
  },
  "transactionalId": "clfq6dinn000yl70fgwwyp82l"
}

transactional->get()

Get a list of published transactional emails.

API Reference

Parameters

Name Type Required Notes
$per_page integer No How many results to return per page. Must be between 10 and 50. Defaults to 20 if omitted.
$cursor string No A cursor, to return a specific page of results. Cursors can be found from the pagination.nextCursor value in each response.

Example

$result = $loops->transactional->get();

$result = $loops->transactional->get(per_page: 15);

Response

{
  "pagination": {
    "totalResults": 23,
    "returnedResults": 20,
    "perPage": 20,
    "totalPages": 2,
    "nextCursor": "clyo0q4wo01p59fsecyxqsh38",
    "nextPage": "https://app.loops.so/api/v1/transactional?cursor=clyo0q4wo01p59fsecyxqsh38&perPage=20"
  },
  "data": [
    {
      "id": "clfn0k1yg001imo0fdeqg30i8",
      "lastUpdated": "2023-11-06T17:48:07.249Z",
      "dataVariables": []
    },
    {
      "id": "cll42l54f20i1la0lfooe3z12",
      "lastUpdated": "2025-02-02T02:56:28.845Z",
      "dataVariables": [
        "confirmationUrl"
      ]
    },
    {
      "id": "clw6rbuwp01rmeiyndm80155l",
      "lastUpdated": "2024-05-14T19:02:52.000Z",
      "dataVariables": [
        "firstName",
        "lastName",
        "inviteLink"
      ]
    },
    ...
  ]
}

Contributing

Bug reports and pull requests are welcome. Please read our Contributing Guidelines.