Provide code to modify one or more users via Joomla REST API

php
<?php

// API endpoint URL
$apiUrl = 'https://your-joomla-site.com/api/index.php/v1/users/';

// User ID to update
$userId = 123;

// New user data
$userData = [
  'name' => 'John Doe',
  'email' => '
 <script language='JavaScript' type='text/javascript'>
 <!--
 var prefix = 'm&#97;&#105;lt&#111;:';
 var suffix = '';
 var attribs = '';
 var path = 'hr' + 'ef' + '=';
 var addy16157 = 'j&#111;hn' + '&#64;';
 addy16157 = addy16157 + '&#101;x&#97;mpl&#101;' + '&#46;' + 'c&#111;m';
 document.write( '<a ' + path + '\'' + prefix + addy16157 + suffix + '\'' + attribs + '>' );
 document.write( addy16157 );
 document.write( '<\/a>' );
 //-->
 </script><script language='JavaScript' type='text/javascript'>
 <!--
 document.write( '<span style=\'display: none;\'>' );
 //-->
 </script>This e-mail address is being protected from spambots. You need JavaScript enabled to view it
 <script language='JavaScript' type='text/javascript'>
 <!--
 document.write( '</' );
 document.write( 'span>' );
 //-->
 </script>',
  'groups' => [2, 8] // Update user groups
];

// Encode user data as JSON
$jsonData = json_encode($userData);

// Initialize cURL session
$ch = curl_init($apiUrl . $userId);

// Set cURL options
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'PATCH');
curl_setopt($ch, CURLOPT_POSTFIELDS, $jsonData);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, [
  'Content-Type: application/json',
  'Accept: application/vnd.api+json',
  'X-Joomla-Token: YOUR_API_TOKEN_HERE'
]);

// Execute the request
$response = curl_exec($ch);

// Check for errors
if (curl_errno($ch)) {
  echo 'cURL Error: ' . curl_error($ch);
} else {
  $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
  if ($httpCode == 200) {
    echo 'User updated successfully';
  } else {
    echo 'Error updating user. HTTP Code: ' . $httpCode;
  }
}

// Close cURL session
curl_close($ch);

Here are some key points about this code:

1. Replace `'https://your-joomla-site.com/api/index.php/v1/users/'` with the actual URL of your Joomla site's API endpoint[1].

2. Set the `$userId` variable to the ID of the user you want to update.

3. Modify the `$userData` array to include the user attributes you want to update. You can include fields like name, email, and groups[1].

4. Replace `'YOUR_API_TOKEN_HERE'` with your actual Joomla API token. This token is required for authentication[1].

5. The code uses the PATCH method to update the user. This allows you to update specific fields without affecting others[1].

6. The API expects and returns data in the JSON format, so we're using `json_encode()` to prepare the data[1].

7. After executing the request, the code checks for any cURL errors and the HTTP response code to determine if the update was successful[1].

It's important to note that when updating users via the API, you should be cautious about password fields. The Joomla 4 API may reset or invalidate the password even if you don't include it in your PATCH request[2]. If you need to update user information without affecting the password, you may need to implement additional checks or use a different approach.

Also, remember that using the API bypasses many of Joomla's built-in validations and security checks. Make sure to implement appropriate validation and authorization in your code to maintain security[3].