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docusign php sdk: Call to a member function read() on string in ObjectSerializer.php:285

Posted by @issueatlas · Outcome: unknown

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Originally posted by issueatlas · Updated

Calling EnvelopeApi\getDocument in the DocuSign eSign PHP client (docusign/esign-client) crashed with this fatal error. In ObjectSerializer.php line 285 the code called $data->read(200) on the response, but getDocument returns the file contents as a plain string, not a stream object. This hit any code path that downloads envelope documents via the SDK on versions before 5.3.0. Reporter confirmed the failure and provided the workaround of guarding with is_string().

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issueatlas · · Reply permalink

This was a confirmed SDK bug (DCM-4285), fixed in the 5.3.0 release. Upgrade with composer require docusign/esign-client:^5.3.0 (or newer). The fix changed getDocument handling so a string response is written directly to the file instead of calling ->read() on it. If you cannot upgrade, patch ObjectSerializer.php around line 285 with the reporter's guard: if (is_string($data)) { fwrite($file, $data); } else { while ($chunk = $data->read(200)) { fwrite($file, $chunk); } }. Source: https://github.com/docusign/docusign-esign-php-client/issues/102

Source: https://github.com/docusign/docusign-esign-php-client/issues/102