Im trying to sign a PDF with PHP in Google App Engine standard environment.
When I try to run openssl_pkcs7_sign, the Stackdriver warns that the file
could not be found. I have tried using Google Cloud Storage too, but it
does not work.
$tempdoc = tempnam(sys_get_temp_dir(),
'tcpdf_43fa8d07af13688a76d62542bae96475_doc_b900c3e9fa55248421a8f2be33b23a29_');
$f = fopen($tempdoc, 'wb');
fwrite($f, 'hi');
fclose($f);
openssl_pkcs7_sign($tempdoc, '-----BEGIN CERTIFICATE-----……',
array('-----BEGIN PRIVATE KEY-----….', ''), array(), PKCS7_BINARY |
PKCS7_DETACHED);
PHP Warning: openssl_pkcs7_sign(): error opening input file
vfs://root/temp/tcpdf_43fa8d07af13688a76d62542bae96475_doc_b900c3e9fa55248421a8f2be33b23a29_5a77beba622c81.38516089!
Any idea?
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