(PHP 5 >= 5.2.2)
openssl_pkcs12_export — Exports a PKCS#12 Compatible Certificate Store File to variable.
openssl_pkcs12_export() stores x509 into a string named by out in a PKCS#12 file format.
See Key/Certificate parameters for a list of valid values.
On success, this will hold the PKCS#12.
Private key component of PKCS#12 file.
Encryption password for unlocking the PKCS#12 file.
Returns TRUE on success or FALSE on failure.