Şunu aradınız:: pem (Korece - İngilizce)

pem( p)
& pem

a pem formatted private key.
a pem formatted private key.

a string containing the content of a certificate, pem encoded
a string containing the content of a certificate / key, pem encoded

a string containing the content of a certificate/key, pem encoded
when this options is present, no translation occurs.

curlopt_sslcert: pass a string containing the filename of pem formatted certificate.
the cookie file can be in netscape format, or just plain http-style headers dumped into a file.

if the outfilename is specified, it should be a string holding the name of a file into which the certificates of the persons that signed the messages will be stored in pem format.
if the outfilename is specified, it should be a string holding the name of a file into which the certificates of the persons that signed the messages will be stored in pem format.

a string having the format file://path/to/cert.pem; the named file must contain a pem encoded certificate
for public keys only: an x.509 resource