I developp a PHP application hosted on Heroku and which use the PHP Toolkit to interact with Force.com.

When I run the app on my computer, it works, data from Salesforce.com are loaded but when I push my app on the Heroku server, I get this error :

Class 'SoapClient' not found in /app/Soapclient/SfocePartnerClient.php on line 44

Line 44 :

class SforceSoapClient extends SoapClient {

What have I to configure on Heroku to fix the error please?

  • 2
    This is file composer.json : { "name": "developerforce/force.com-toolkit-for-php", "description": "A wrapper for the Force.com Web Services SOAP API", "license": "BSD-3-Clause", "autoload": { "classmap": [ "soapclient" ] }, "extra": { "branch-alias": { "dev-master": "1.0.x-dev" } }, "require": { "ext-soap": "*", "php": ">=5.4.0" } }
    – Oupat
    Jun 22, 2015 at 16:39

2 Answers 2


I fixed it by requiring "ext-soap" in composer.json:

    "require": {
        "ext-soap": "*",
        "php": ">=5.4.0"

Run composer update to generate a composer.lock file, and push both files to Heroku, or manually deploy from Dropbox via https://dashboard.heroku.com/apps/your-app-name/deploy/dropbox


It didn't work because the soap extension wasn't correctly activated.

I had to create a case to the Heroku support.

Now, it works fine.


  • I'm having the same issue. Is it only fixable on their end? Sep 4, 2017 at 15:01

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