How to resolve the issue with the curl_exec function not being available in WHMCS?

[Helposoft Staff]

To resolve the issue with the curl_exec function not being available in WHMCS, you need to ensure that the cURL extension is enabled and that curl_exec is not disabled in the PHP configuration. Here's a step-by-step detailed guide to resolve this issue:

Step 1: Check and Enable cURL Extension in PHP​

Using EasyApache in WHM​

1. Log in to WHM as the 'root' user.
2. Navigate to EasyApache:
   • In the WHM search bar, type "EasyApache" and click on it.
   • Alternatively, go to Software > EasyApache 4.
3. Customize Profile:
   • Click on the Currently Installed Packages or Customize button next to the profile you want to modify.
4. Select PHP Extensions:
   • Go to the PHP Extensions section.
5. Enable cURL:
   • In the list of extensions, find curl and ensure it is checked.
   • Click on Next to proceed.
6. Review and Provision:
   • Review the changes and click on Provision to apply the changes.
7. Restart Apache:
   • After the provisioning is complete, restart Apache to apply the changes.
     
     

     sudo systemctl restart httpd

Step 2: Ensure curl_exec is Not Disabled​

1. Locate the Correct php.ini File:
   • Determine which php.ini file is being used by PHP. You can find this information by creating a phpinfo file or running the following command:
     
     

     php -i | grep "Loaded Configuration File"

     
     
   • This will display the path to the php.ini file.
2. Edit the php.ini File:
   • Open the php.ini file in a text editor. For example:
     
     

     nano /path/to/php.ini

3. Modify the disable_functions Directive:
   • Locate the line that starts with disable_functions.
   • Ensure that curl_exec is not listed in this directive. If it is, remove it. The line might look something like this:
     
     

     disable_functions = exec,passthru,shell_exec,system,proc_open,popen,curl_exec,curl_multi_exec,parse_ini_file,show_source

     
     
   • Change it to:
     
     

     disable_functions = exec,passthru,shell_exec,system,proc_open,popen,parse_ini_file,show_source

     
     
     
4. Save the Changes and Exit:
   • Save the php.ini file and exit the text editor.

Step 3: Verify and Restart Services​

1. Restart Apache and PHP-FPM (if applicable):
   • Restart Apache to apply the changes:
     
     

     sudo systemctl restart httpd

     
     
   • If you are using PHP-FPM, restart it as well:
     
     

     sudo systemctl restart php-fpm

2. Verify cURL Extension and Functions:
   • Create a phpinfo file to verify that the cURL extension is enabled and that curl_exec is available.
   • Create a file named phpinfo.php in your web server's root directory with the following content:
     
     

     <?php
     phpinfo();
     ?>

     
     
   • Access this file via your browser (e.g., http://yourdomain.com/phpinfo.php) and look for the cURL section to ensure it is enabled.

Step 4: Verify WHMCS​

1. Log in to WHMCS Admin Panel:
   • Access the WHMCS admin panel and check if the licensing error is resolved.
2. Check WHMCS System Health:
   • Go to Help > System Health Status in the WHMCS admin panel.
   • Ensure that there are no errors related to curl_exec.

Additional Troubleshooting​

If you still encounter issues, here are a few additional steps:

1. Check for Multiple php.ini Files:
   • Ensure there are no other php.ini files overriding the settings.
2. Check for User-Specific php.ini Files:
   • Some configurations might have user-specific php.ini files. Check the user's home directory for any php.ini or .user.ini files.
3. Verify PHP-FPM Pool Configuration (if applicable):
   • If you are using PHP-FPM, check the pool configuration files in /etc/php-fpm.d/ to ensure curl_exec is not disabled.
4. Review Error Logs:
   • Check the Apache and PHP error logs for any additional information.

By following these steps, you should be able to resolve the issue with the curl_exec function not being available in WHMCS. If the problem persists, please provide any error messages or additional details for further assistance.