Kaizen #84 - PHP SDK [Part I]

Kaizen #84 - PHP SDK [Part I]

Hello and welcome to another Kaizen week!

In this week's post, we'll show you how to get started with Zoho CRM's PHP SDK, and walk you through the configuration and initialization process.

PHP Software Development Kit

PHP SDK allows you to create client PHP applications that can be integrated with Zoho CRM effortlessly. It serves as a wrapper for the REST APIs, thus making it easier to use the services of Zoho CRM.

Why PHP SDK?

Easy authentication: You don't have to worry about manually managing authentication because the PHP SDK takes care of generating access/refresh tokens for you.
Easy and Efficient data exchange: With the PHP SDK, you can easily exchange data between Zoho CRM and your client PHP application, where the CRM entities are modelled as classes. You can declare and define CRM API equivalents as simple functions in your PHP application.

Prerequisites 

  • The client app must have PHP 7 or above with a cURL extension. cURL extension is used to connect and communicate with the Zoho CRM APIs.
  • The client app must have the PHP SDK installed through Composer. 

How to start using the PHP SDK?

  1. Prerequisite : Register your application with Zoho CRM.
  2. Install the PHP SDK.
  3. Knowledge Base : Token Persistence
  4. Configuration 
  5. initialization.

1. Register your application with Zoho CRM

Registering your application with Zoho CRM is a mandatory step in order to authenticate and authorize API calls using the OAuth2.0 standards.
  1. Go to https://api-console.zoho.com
  2. Click on Get Started or +ADD CLIENT.
  3. Choose the Client Type.
  4. Fill in the necessary details and click CREATE. Once you successfully register your self-client, you will receive a Client ID and Client Secret.

2. Install PHP SDK 

1. Install Composer, if not already installed. Please check the corresponding link for installation instructions.

2. Install PHP-SDK using Composer
  • Navigate to the workspace of your client app.
  • Run the following command in the workspace. Upon successful installation, the system will create a package named vendor in the workspace of your client app.   Note : This command installs SDK for API v2.1.

    composer require zohocrm/php-sdk-2.1

3. To use the SDK in your project, add the following line in your project PHP files. This loads and includes our PHP-SDK library in your project. If you skip this step, you will get a fatal error in response due to the missing libraries.

require 'vendor/autoload.php';

3. Token Persistence

Token persistence refers to storing and utilizing authentication tokens provided by Zoho, enabling the SDK to refresh the access tokens without the need for user intervention. The SDK offers three types of persistence - File, DB, and Custom - with file persistence being the default method. 
The persistence is achieved by writing an implementation of the inbuilt TokenStore interface, which has the following callback methods. 

Method
Description
getToken($user, $token)
Invoked before firing a request to fetch the saved tokens. This method returns an implementation of Token interface object for the library to process it.
saveToken($user, $token)
Invoked after fetching access and refresh tokens from Zoho. This method saves the token details.
deleteToken($token)
This method is used to delete the given token details.
getTokens()
This method is used to retrieve all the stored tokens.
deleteTokens() 
The method to delete all the stored tokens.
getTokenById($id, $token) 
This method is used to retrieve the user token details based on the unique ID.

a. Token Persistence using a Database

Database persistence is a technique that involves storing and retrieving data from a database. If you prefer using database persistence, you can use MySQL. 
Create a table in your database with the required columns. For example, if you want to persist your tokens in a table named token in database named zoho, use the following:
CREATE DATABASE zoho; // use this to create database named zoho
// use this to create a table named token, with the necessary columns
CREATE TABLE token ( 
  id varchar(255) NOT NULL,
  user_mail varchar(255) NOT NULL,
  client_id varchar(255),
  client_secret varchar(255),
  refresh_token varchar(255),
  access_token varchar(255),
  grant_token varchar(255),
  expiry_time varchar(20),
  redirect_url varchar(255),
  primary key (id)
);

In this example, your tokens will be persisted in the token table in your zoho database.

b. File Persistence

File Persistence allows storing and retrieving the authentication tokens from the given file path. The file contains id, user_mail, client_id, client_secret, refresh_token, access_token, grant_token, expiry_time and redirect_url. 

c. Custom Persistence

Custom Persistence refers to a technique where users can create their own method of storing and retrieving authentication tokens. To use this method, users need to implement the TokenStore interface and override its methods according to their own logic.

4. Configuration

Configuration is a critical step in which you set up SDK's configuration details like user authentication, token persistence, logging and API call timeout settings, and more. Listed below are the keys that you define in this step.

Key
Description
user
mandatory
Represents the mail id, which is used to identify and fetch tokens from the File or DB.
environment
mandatory
Represents the data centre details in Domain::Environment pattern.
Domains : USDataCenter, EUDataCenter, INDataCenter, CNDataCenter, AUDataCenter
Environments : PRODUCTION(), DEVELOPER(), SANDBOX()
token
mandatory
Contains user token details. Depending on the tokens, you can choose grantToken flow, refreshToken flow or accessToken flow.
logger
optional
Contains the configuration for logging exceptions and API call information. By default, the logs will be available in the workspace as sdk_logs.log.
store
optional
Contains details for the Token Persistence object. You can choose between DB Store, File Store or Custom Store, and configure accordingly.
SDKConfig
optional
Contains additional configuration details like timeout, autorefresh fields, picklistvalidation, etc
requestProxy
optional
Contains the details of the proxy, if you are using a proxy server to authenticate and make the API calls.
resourcePath
optional
The path containing the absolute directory path to store user specific files containing the module fields information.


Let us discuss how to configure each of them, in detail.
a. user : The user key will be used to store and identify the tokenstore details in the DB or File Storage for token persistence. Create an instance of UserSignature that identifies the current user with the following :
  1. $user = new UserSignature("patricia@zoho.com");
b. environment : The API environment which decides the domain and the URL to make API calls. 
  1. $environment = USDataCenter::PRODUCTION();
c. token : Create an instance of OAuthToken with the information that you get after registering your Zoho client. Depending on the tokens available with you, you can choose one of the following flows. 
Note : You need to generate the tokens (grant/access/refresh) beforehand. 
  • grantToken flow - You should use the grant Token for configuration.
    $token = (new OAuthBuilder())
      ->clientId("clientId")
      ->clientSecret("clientSecret")
      ->grantToken("grantToken")
      ->redirectURL("redirectURL")
      ->build();

  • refreshToken flow -In this flow, use the refresh token.
    $token = (new OAuthBuilder())
      ->clientId("clientId")
      ->clientSecret("clientSecret")
      ->refreshToken("refreshToken")
      ->redirectURL("redirectURL")
      ->build();

  • accessToken flow - You can use the access token to configure in this flow. Please note that the token will not be persisted in this case, and the access token will be directly used to make the API calls.

    $token = (new OAuthBuilder()
      ->accessToken("accessToken")
      ->build(); 

d. logger : Create an instance of Logger Class to log exception and API information. You can set the level you want to log (FATAL, ERROR, WARNING, INFO, DEBUG, TRACE, ALL, OFF), and also configure the file path and file name for the log file.

$logger = (new LogBuilder())
->level(Levels::INFO)
->filePath("/Documents/php_sdk_log.log")
->build();

e. store : Configure your token persistence using this method. If this is skipped, the SDK creates the sdk_tokens.txt in the current working directory to persist the tokens by default.
  • DB Store - Configure the Database details, where you want to store your tokens.
    $tokenstore = (new DBBuilder())
    ->host("hostName")
    ->databaseName("dataBaseName")
    ->userName("userName")
    ->password("password")
    ->portNumber("portNumber")
    ->tableName("tableName")
    ->build();

  • File store - Give the absolute file path, where you want to store the tokens. 
    $tokenstore = new FileStore("absolute_file_path");

  • Custom Store - In this method, you can implement your own method for storing and retrieving the tokens. Please note that to do so, you must implement the TokenStore interface, and override its callback methods (getToken, saveToken, deleteToken, getTokens, deleteTokens, getTokenById). 
    $tokenstore = new CustomStore();

Note :  The corresponding storage will  have id, user_mail, client_id, client_secret, refresh_token, access_token, grant_token, expiry_time and redirect_url. The id is a unique system generated key.

f. SDKConfig : The additional SDK configurations are taken care of with this method. 

Configuration Key
Description
autoRefreshFields
Default Value : False
A boolean configuration key to enable or disable automatic refreshing of module fields in the background. If set to true, fields are refreshed every hour, and if set to false, fields must be manually refreshed or deleted.
pickListValidation
Default Value : True
This field enables or disables pick list validation. If enabled, user input for pick list fields is validated, and if the value does not exist in the pick list, the SDK throws an error. If disabled, the input is not validated and the API call is made.
enableSSLVerification
Default Value : True
A boolean field to enable or disable curl certificate verification. If set to true, the SDK verifies the authenticity of certificate. If set to false, the SDK skips the verification.
connectionTimeout
Default Value : 0
The maximum time (in seconds) to wait while trying to connect. Use 0 to wait indefinitely.
timeout
Default Value : 0
The maximum time (in seconds) to allow cURL functions to execute. Use 0 to wait indefinitely.
  1. $autoRefreshFields = false;
  2. $pickListValidation = false;
  3. $enableSSLVerification = true;
  4. $connectionTimeout = 2;
  5. $timeout = 2;
  6. $sdkConfig = (new SDKConfigBuilder())
  7. ->autoRefreshFields($autoRefreshFields)
  8. ->pickListValidation($pickListValidation)
  9. ->sslVerification($enableSSLVerification)
  10. ->connectionTimeout($connectionTimeout)
  11. ->timeout($timeout)
  12. ->build();
g. requestProxy : Create an instance of RequestProxy containing the proxy properties of the user. Configure this only if you're using a proxy server to make the API calls.

$requestProxy = (new ProxyBuilder())
 ->host("proxyHost")
 ->port("proxyPort")
 ->user("proxyUser")
 ->password("password")
 ->build();

h. resourcePath : Configure path containing the absolute directory path to store user specific files containing module fields information.

$resourcePath = "/Documents/phpsdk-application";

5. Initilization

Once you have completed the configuration process, you can move on to initializing the SDK and begin making API requests.

Here is a sample code to initialize the SDK, using refresh token flow and DB Persistence.

<?php
use com\zoho\api\authenticator\OAuthBuilder;
use com\zoho\api\authenticator\store\DBBuilder;
use com\zoho\api\authenticator\store\FileStore;
use com\zoho\crm\api\InitializeBuilder;
use com\zoho\crm\api\UserSignature;
use com\zoho\crm\api\dc\USDataCenter;
use com\zoho\api\logger\LogBuilder;
use com\zoho\api\logger\Levels;
use com\zoho\crm\api\SDKConfigBuilder;
use com\zoho\crm\api\ProxyBuilder;
use com\zoho\api\authenticator\store\DBBuilder;

require_once "vendor/autoload.php";

class Initialize
{
  public static function initialize()
  {
    $user = new UserSignature("patricia@zoho.com");
    $environment = USDataCenter::PRODUCTION();
    $token = (new OAuthBuilder())
    ->clientId("1000.xxxxxxxxxxxxxxxx")
    ->clientSecret("554a9776d10ff016a92c1eb01xxxxxxxxxx")
    ->refreshToken("1000.xxxxxxxxxxxxxxxxxxxx")
    ->redirectURL("www.zoho.com")
    ->build();
    $logger = (new LogBuilder())
    ->level(Levels::INFO)
    ->filePath("/Documents/php_sdk_log.log")
    ->build();
   $tokenstore = (new DBBuilder())
    ->host("insert_your_hostname_here")
    ->databaseName("insert_your_database_name_here")
    ->userName("insert_your_db_username_here")
    ->password("insert_your_db_password_here")
    ->portNumber("insert_your_portnumber_here")
    ->tableName("insert_your_table_name_here")
    ->build();
    $autoRefreshFields = false;
    $pickListValidation = false;
    $connectionTimeout = 2;
    $timeout = 2;
    $sdkConfig = (new SDKConfigBuilder())
    ->autoRefreshFields($autoRefreshFields)
    ->pickListValidation($pickListValidation)
    ->sslVerification($enableSSLVerification)
    ->connectionTimeout($connectionTimeout)
    ->timeout($timeout)
    ->build();
    $resourcePath = "/Documents/phpsdk-application";
    $requestProxy = (new ProxyBuilder())
    ->host("proxyHost")
    ->port("proxyPort")
    ->user("proxyUser")
    ->password("password")
    ->build();
    (new InitializeBuilder())
    ->user($user)
    ->environment($environment)
    ->token($token)
    ->store($tokenstore)
    ->SDKConfig($configInstance)
    ->resourcePath($resourcePath)
    ->logger($logger)
    ->requestProxy($requestProxy)
    ->initialize();
  }
}
?>


You are now all set to explore the functionalities of SDK. Here is a sample code to get the records from Leads module, with the ifmodifiedsince header.

<?php
use com\zoho\api\authenticator\OAuthBuilder;
use com\zoho\crm\api\dc\USDataCenter;
use com\zoho\crm\api\InitializeBuilder;
use com\zoho\crm\api\UserSignature;
use com\zoho\crm\api\record\RecordOperations;
use com\zoho\crm\api\record\GetRecordsHeader;
use com\zoho\crm\api\HeaderMap;
use com\zoho\crm\api\ParameterMap;
require_once "vendor/autoload.php";

class Record
{
    public static function initialize()
    {
        $user = new UserSignature('myname@mydomain.com');
        $environment = USDataCenter::PRODUCTION();
        $token = (new OAuthBuilder())
        ->clientId("1000.xxxxxxx")
        ->clientSecret("4b5baxxxxxxxxxxxxf")
        ->grantToken("1000.xxxxx")
        ->build();
        (new InitializeBuilder())
            ->user($user)
            ->environment($environment)
            ->token($token)
            ->initialize();
    }

    public static function getRecords()
    {
        $recordOperations = new RecordOperations();
        $paramInstance = new ParameterMap();
        $headerInstance = new HeaderMap();
     $ifmodifiedsince = date_create("2022-06-01T12:00:00+05:30")->setTimezone(new \DateTimeZone(date_default_timezone_get()));
        $headerInstance->add(GetRecordsHeader::IfModifiedSince(), $ifmodifiedsince);
        $response = $recordOperations->getRecords("Leads", $paramInstance, $headerInstance);
        echo($response->getStatusCode() . "\n");
        print_r($response);
    }
}
Record::initialize();
Record::getRecords();


Next week, we will dive deeper and provide more sample codes to help you further. Stay tuned!

If you have any queries, let us know the comments below, or drop an email to support@zohocrm.com. We would love to hear from you. 



    • Recent Topics

    • Assistance Needed with Prospect Conversion Issue

      Hi, I attempted to convert a prospect to an account, but received a pop-up notification indicating that the contact information matches an existing contact. I selected the option to add it to the existing contact, but it appears the prospect was not successfully

    • Mail Merge - unable to send more than 50 email

      Hi, I've subscribed to the pay email service because of the Mail Merge feature. However, I've found that this feature only allow to send up to 50 emails. I've to attach a screenshot for your reference. This limitation is not mentioned anywhere in service.

    • Zoholics Europe 2025: Your Ultimate Data Analysis (Zoho Analytics) Workshop Experience

      Why should you attend? This year, Zoholics Europe 2025 is putting data analysis centre stage. With a dedicated workshop designed to answer all your data-related questions, you’ll gain practical skills, real-time solutions, and expert insights that you

    • UK payroll entries

      Hey guys, Nett payroll payments are imported direct into the bank, using an external payroll system (will be glad for Zoho to have a UK payroll app) At present I have monthly recurring bills for HMRC which are auto entered & paid when due. This seems

    • Invoice status on write-off is "Paid" - how do I change this to "Written off"

      HI guys, I want to write off a couple of outstanding invoices, but when I do this, the status of the invoices shows as "Paid". Clearly this is not the case and I need to be able to see that they are written off in the customer's history. Is there a way

    • Reverse Charge Services (Non-EU) Showing Correctly in 84/85 and 67, But Missing in Box 46 - Germany

      Hi, I'm located in Germany and I’ve set up my expenses for non-EU services (e.g., OpenAI, DeepSeek) under the reverse charge mechanism (§ 13b UStG) in Zoho Books, and I noticed some discrepancies in the VAT Summary Report. What’s Correct: Reverse Charge

    • Zoho Live Chat/Support

      What is going on with Zoho support lately? I've tried to use the live chat feature 4 different times and it refuses to connect to any (despite waiting over 30 minutes one of the tries). I finally gave up and emailed my question nearly a week ago and still

    • Can we have a module to records Certificate No and TDS rates for Lower TDS Certificates by the vendors ?

      Can we have a module to records Certificate No and TDS rates for Lower TDS Certificates by the vendors ?

    • Tip #38- Track Organizational Changes: A Guide to Using Action Log Viewer- 'Insider Insights'

      Hello Zoho Assist Community! Ever needed to trace who did what and when within your remote support operations? Let’s say your support team is growing, and you want to monitor key activities like settings updates, user invites, module changes, or permission

    • Tip of the Week #67– Avoid confusion – Mark duplicate threads.

      When customers send the same message to multiple email addresses, such as support@ and sales@, your team may end up seeing the same message in different inboxes. This creates confusion, risks double replies, and clutters your workspace. Use the Mark as

    • Tax in Quote

      Each row item in a quote has a tax value.  At the total numbers at the bottom, there is also a Tax entry. If you select tax in both of the (line item, and the total), the tax doubles. My assumption is that the Tax total should be totalling the tax from

    • Final Reminder: Discontinuation of Older ASAP Widgets and Mobile SDK Support

      We launched the new ASAP Help Widget last year, introducing a unified and enhanced experience. Since then, older configurations have been placed in read-only mode, with all major updates and improvements built exclusively on the new version. As part of

    • Zoho Subscriptions -- Zoho Commerce integration

      Is there integration between Zoho Subscriptions and Zoho Commerce? I would like to create subscription plans in Zoho Subscritpions and list them for on my Zoho Commerce store.

    • Website show Blank white screen

      Customer called me to tell me my website is currently down upon review it shows a white screen however I can access everything via editor. JITCADCAM.com

    • How manufacturing analytics can transform your enterprise with Zoho Projects Plus

      Did you know that every single car is made up of 30,000 to 40,000 individual parts? All of these are manufactured meticulously in various facilities before being assembled into one. The global manufacturing industry spans a wide range from delivering

    • Projects custom colors replaced by default orange

      Since yesterday, projects uploaded to Zoho, to which I had assigned a custom color, have lost the customization and reverted to the default color (orange). Has anyone else had the same problem? If so, how did you resolve it?

    • Customize your SalesIQ live chat with Custom CSS and blend it with your website design

      Hi everyone. Hope you all are having a great day! SalesIQ offers various inbuilt customization choices for your chat widget and window like changes in colour, theme, font etc. Although these choices are many, sometimes they may not match with the design

    • From Email Address When Replaying to Missed Chats

      One of the most common things we do is follow up on every missed chat.  Missed chats are like money in the bank, people just waiting for your response and to start a relationship with our companies. However, SalesIQ only lets you respond from 1 email address from your entire account?! We have happily paid for 4 subscriptions, but our users cannot reply from their own email address?  How are we supposed to build customer relationships? The fix to this issue is so simple, just load in the logged in

    • how to treat a same person as customer and vendor in zoho

      hi team, in my company, few persons acting as creditors as well as debtors (which means sometimes we pay them... some times we paid by them). in that case i would like to maintain a same ledger for that person.in zoho books it is treating creditor and

    • Narrative 6 - The impact of rebranding

      Behind the scenes of a successful ticketing system - BTS Series Narrative 6 - The impact of rebranding Every organization has invested in branding to set itself apart, and that should be reflected in the help desk. Zoho Desk enables organizations to apply

    • custom color palette for picklist in Sheet

      Migrating over from Google Sheets and missing the ability to customize the individual item colors of my picklist/dropdown menus. Is this something that is possible? A search showed me creating a custom color palette in Analytics is possible but I am not

    • What's New - July 2025 | Zoho Backstage

      Start smart, end strong. From knowing who’s coming to celebrating who showed up, July’s updates help you run events that feel organized from the first invite to the final thank you. Planning an event used to be like writing a choose-your-own-adventure

    • Image Upload Field API get encrypted ID and sequence number

      Hello is there a way to extract the encrypted id and sequence number from image upload fields through the Zoho CRM API? I created a custom script with javascript within Zoho CRM, but I want to extract the encrypted id and sequence number for all my images

    • Attention: Changes to 10DLC TCR pricing and new authentication requirements

      Hi everyone, Starting August 1, 2025, The Campaign Registry (TCR) is introducing new pricing changes and a mandatory brand verification process called Authentication+ 2.0, which will affect how you register and manage your 10DLC messaging services. These

    • Better Time Tracking

      We need better time tracking customization for IT MSPs. We also need reporting that is built in, rather than having to try and fumble with creating custom reports. We also need to be able to mark whether a ticket has been billed or not, I don't think

    • Scheduled Tickets Need Updated

      There is a very clunky manual way to create reoccurring scheduled tickets. This should be created to be easy for the administrator to create. We create several (10 to 12) reoccurring tickets per account for biweekly and monthly auditing purposes.. The

    • Team Feeds Improvements

      Team Feeds needs to show a feed of every action within the department. Currently it seems that the feed will only show a ticket that I've personally commented on or interacted with/followed. A feed should be that, a feed. As a manager I would like to

    • Better Security, Better User Experience | Help Center Update | June'25

      As part of our commitment to enhancing user experience and security, we are happy to announce updates to our authentication mechanism. This update introduces several key enhancements designed to improve the password recovery process and streamline the

    • Upload Logo to Account Page

      It would be nice to set a logo for an Account

    • View Agent Collision on Ticket List Page

      It would be nice from the ticket listing page (views) to see what agents are working on what tickets rather than having to click into each ticket throughout the day to see what agents are working on what tickets. This functionality would also be desired

    • Restrict user from viewing the detail standard view

      Is there any way to restrict a user(it can be user-field-based) from viewing the detail standard view? Basically, I have created a canvas detailed view so that on some conditions I can hide some data from the users but the standard view client script

    • Upload Picture to Contact

      It would be nice to upload a profile picture to a contact.

    • Allowing Pictures for Client Contacts

      Do you have any plans to allow us to add pictures of our client contacts? There is a silhouette of a person there now, but no way that I can see where I can actually add a picture of the individual.

    • Paid Support Plans with Automated Billing

      We (like many others, I'm sure) are designing or have paid support plans. Our design involves a given number of support hours in each plan. Here are my questions: 1) Are there any plans to add time-based plans in the Zoho Desk Support Plans feature? The

    • Agent name Alias

      I am seeing that Full name of my staffs are written on every ticket response which is not good for some reasons. It is possible to user like this: Manny P. (First Name with Last Name's First Letter) or  Manny (First Name) This is want we want to show

    • Unable to add attachments to tickets through Desk API

      I able to use the Desk API to generate tickets. However when I try to use the tickets/{ticketId}/attachments endpoint, I always get an Unauthorized error. My app has Desk.Tickets.ALL included in its scope so this should not be an issue

    • What's wrong with this COQL?

      What's wrong with this COQL? Code returns "invalid operator found". SELECT id, Name, Stage, Account, Created_Time, Tag FROM Production_Orders WHERE (Account = '4356038000072566002' AND Stage NOT LIKE '%customer%') ORDER BY Created_Time DESC LIMIT 200

    • [Feature Request] Add support for internationalized top-level domains mail hosting

      This is an important request to add support for internationalized domains mail hosting to https://www.zoho.com/mail/ In this case, that is only limited to domain name/mail address however currently it's already possible for us send mails etc using below

    • Add Enable/Disable to Field Rules and other Rules

      Hi, Sometimes I have rules setup for fields, and until I want to enable them for use, I can set the fields to Hidden but rules still show them, today you have to delete rules and then recreate them again, would be nice to have a toggle for Enabled/Disabled

    • Syncing stuck for days

      Hello when I made an account a few days ago and synced all my notes to it, it is still syncing. My app is only 400mb so I do not know why it is taking so long. Please help

    • Next Page