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Editorial Team
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Asked: 2026-06-07T11:04:05+00:00

I’ve got a weird issue. Basically, I need to do this: $handle = stream_context_create();

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I’ve got a weird issue. Basically, I need to do this:

 $handle = stream_context_create();
 stream_context_set_option($handle , 'ssl', 'local_cert', '/tmp/cert');

However. The certificate is not held as a file within the server. Rather it’s an encrypted string held in a clustered database environment. So instead of the certificate being a file name pointer, its the physical content of the certificate. So instead of using the file name, I need to specify the content of the certificate instead.

For example:

 $cert = '-----BEGIN CERTIFICATE-----....
 upWbwmdMd61SjNCdtOpZcNW3YmzuT96Fr7GUPiDQ
 -----END CERTIFICATE-----';

Does anyone have any idea whatsoever how on earth I can do this? I’m scratching my head over this problem, but my gut instinct says it is doable.

Thanks in advance everyone!

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1 Answer

  1. Editorial Team

    As Maerlyn said, it appears the only way to do this will be to write the certificate from memory to a temporary file, call the function, make the request, and then remove the temp file.

    I looked at the PHP source code (relevant code here) and when you make a request that will use SSL, it checks to see if local_cert context option is set, and if so, ultimately calls the OpenSSL function SSL_CTX_use_PrivateKey_file which reads the certificate from a disk file.

    Take note that the file doesn’t get read until the request is performed, so you can’t delete the temp file until after your request, as opposed to after calling stream_context_set_option.

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