Passing .PEM and .KEY as string in Curl using PHP

The answer is unfortunately as easy as it is simple: No, it is not possible.

The underlying libcurl has no API for providing keys as strings, only as files!

Bonus material:

If you're sure that your libcurl is built with OpenSSL, you can actually use the CURLOPT_SSL_CTX_FUNCTION option to do it. However:

that makes it an libcurl+OpenSSL specific solution
I don't think PHP/CURL exposes that function (enough) to allow this. You would probably need to extend the binding code first...

(I should add that I am the main author and maintainer of libcurl.)

php ssl curl https ssl-certificate

Using tmpfile() might suffice as a workaround.

$tempPemFile = tmpfile();fwrite($tempPemFile, $pemfile);$tempPemPath = stream_get_meta_data($tempPemFile);$tempPemPath = $tempPemPath['uri'];

and then:

curl_setopt($ch, CURLOPT_SSLCERT, $tempPemPath);

but make sure you close it after so the tmp file is delete

fclose($tempPemFile);

php ssl curl https ssl-certificate

You could create temporary files, write the strings into the files and then point to the temp files...

CodeHunter