openssl_csr_get_subject

(PHP 5 >= 5.2.0, PHP 7, PHP 8)

openssl_csr_get_subject — Returns the subject of a CSR

Description

openssl_csr_get_subject(OpenSSLCertificateSigningRequest|string $csr, bool $short_names = true): array|false

openssl_csr_get_subject() returns subject distinguished name information encoded in the csr including fields commonName (CN), organizationName (O), countryName (C) etc.

Parameters

csr

See CSR parameters for a list of valid values.

short_names

shortnames controls how the data is indexed in the array - if shortnames is true (the default) then fields will be indexed with the short name form, otherwise, the long name form will be used - e.g.: CN is the shortname form of commonName.

Return Values

Returns an associative array with subject description, or false on failure.

Changelog

Version Description
8.0.0 csr accepts an OpenSSLCertificateSigningRequest instance now; previously, a resource of type OpenSSL X.509 CSR was accepted.

Examples

Example #1 openssl_csr_get_subject() example

<?php
$subject = array(
"countryName" => "CA",
"stateOrProvinceName" => "Alberta",
"localityName" => "Calgary",
"organizationName" => "XYZ Widgets Inc",
"organizationalUnitName" => "PHP Documentation Team",
"commonName" => "Wez Furlong",
"emailAddress" => "wez@example.com",
);
$private_key = openssl_pkey_new(array(
"private_key_bits" => 2048,
"private_key_type" => OPENSSL_KEYTYPE_RSA,
));
$configargs = array(
'digest_alg' => 'sha512WithRSAEncryption'
);
$csr = openssl_csr_new($subject, $privkey, $configargs);
print_r(openssl_csr_get_subject($csr));
?>

The above example will output something similar to:

Array
(
    [C] => CA
    [ST] => Alberta
    [L] => Calgary
    [O] => XYZ Widgets Inc
    [OU] => PHP Documentation Team
    [CN] => Wez Furlong
    [emailAddress] => wez@example.com
)

See Also