openssl_pkcs12_export()

(PHP 5 >= 5.2.2, PHP 7)

将 PKCS#12 兼容证书存储文件导出到变量

说明

openssl_pkcs12_export(mixed $x509,string &$out, mixed $priv_key,string $pass[,array $args]): bool

openssl_pkcs12_export()以 PKCS#12 文件格式将$x509导入到以$out命名类型为字符串的变量中。

参数

$x509

参见密钥／证书参数以获取有效值列表。

$out

成功，该字符串将为 PKCS#12 格式。

$priv_key

PKCS#12 文件的私钥部分file，参见公/私钥参数获取更多可用列表。

$pass

用来解锁 PKCS#12 文件的解密密码。

$args

可选数组，其他主键将被忽略。

Key	说明
"extracerts"	PKCS#12 文件中包含的额外证书或单个证书的数组。
"friendlyname"	被证书和密钥使用的字符串

返回值

成功时返回TRUE，或者在失败时返回FALSE。

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);
?>

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);
?>

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"

Example:
<?php
$key = openssl_pkey_get_private(Private_Key, Password);
openssl_pkcs12_export(Certificate, $iis, $key, Password);
?>