If your certificate is not password-protected, just use null or a blank string. Otherwise, this function won't work.
(PHP 5 >= 5.2.2, PHP 7, PHP 8)
openssl_pkcs12_export — Exporta un Archivo de Almacén de Certificado Compatible con PKCS#12 a una variable
$x509,&$out,$priv_key,$pass,$args = ?
openssl_pkcs12_export() guarda
x509 en una cadena nombrada por
out en un formato de archivo PKCS#12.
x509Ver parámetros Key/Certificate para un listado de valores válidos.
outSi se tiene éxito, ésto contendrá el PKCS#12.
priv_keyEl componente clave privada del archivo PKCS#12.
passContraseña de encriptación para desbloquear el archivo PKCS#12.
args
If your certificate is not password-protected, just use null or a blank string. Otherwise, this function won't work.If you need to provide multiple additional certificates, the 'extracerts' argument needs to be an array with one certificate per element:<?php$args = array( 'extracerts' => array( 0 => '-----BEGIN CERTIFICATE----- cert1 ...', 1 => '-----BEGIN CERTIFICATE----- cert2 ...', // ... ) );?>You can use this to prepare a PEM.<?php$pemChain = '...';preg_match_all('/(-----BEGIN CERTIFICATE-----.*?-----END CERTIFICATE-----)/si', $pemChain, $matches);$args = array('extracerts' => $matches[0]);openssl_pkcs12_export($signed_csr, $cerificate_out, $private_key_resource, $passphrase, $args);?>in order to export a private key to pkcs12 format, the input certificate must contain both private and associated public key in PEM format , -----BEGIN RSA PRIVATE KEY----------END RSA PRIVATE KEY----------BEGIN CERTIFICATE----------END CERTIFICATE-----else this function might return the following error "openssl_pkcs12_export(): cannot get cert from parameter 1"If you want to include CA-Certificates in the PKCS12 it can be accomplished by using the $args parameter.<?php$args = array( 'extracerts' => $CAcert, 'friendly_name' => 'My signed cert by CA certificate' );openssl_pkcs12_export($signed_csr, $cerificate_out, $private_key_resource, $passphrase, $args);?>